Test Report 9

FCC ID: RI7LE910CXNF

Test Report

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FCCID_4039696

Report No.: 1870209R-HPUSP17V00-A


8.     Frequency Stability

8.1.   Test Setup




8.2.   Test Procedure

       Frequency Stability Under Temperature Variations:
       The equipment under test was connected to an external AC or DC power supply and input
       rated voltage. RF output was connected to a frequency counter or spectrum analyzer via
       feed through attenuators. The EUT was placed inside the temperature chamber. Set the
       spectrum analyzer RBW low enough to obtain the desired frequency resolution and
       measure EUT 20℃ operating frequency as reference frequency. Turn EUT off and set the
       chamber temperature to -30℃. After the temperature stabilized for approximately 30
       minutes recorded the frequency. Repeat step measure with 10℃ increased per stage until
       the highest temperature of +50℃ reached.

       Frequency Stability Under Voltage Variations:
       Set chamber temperature to 20℃. Use a variable AC power supply / DC power source to
       power the EUT and set the voltage to rated voltage. Set the spectrum analyzer RBW low
       enough to obtain the desired frequency resolution and recorded the frequency.
       Reduce the input voltage to specify extreme voltage variation (±15%) and endpoint, record
       the maximum frequency change.


8.3.   Test Method
       KDB 971168 D01 Power Meas License Digital Systems v03 sub-clause 9
       ANSI C63.26: 2015 Sub-clause 5.6




                                          Page: 617 of 648


Report No.: 1870209R-HPUSP17V00-A


8.4.   Test Result
 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 1: LTE Band 2
 Date of Test              2018/08/08            Test Site       SR10-H


1860MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                              2                            -0.0030
                 3.8                             -25                           0.0371
                 3.4                              8                            -0.0119


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                              1                            -0.0015
                 -20                              -4                           0.0059
                 -10                              -1                           0.0015
                 0                               18                            -0.0267
                +10                              -32                           0.0475
                +20                              16                            -0.0238
                +30                               6                            -0.0089
                +40                              -26                           0.0386
                +50                              -42                           0.0624




                                            Page: 618 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 1: LTE Band 2
 Date of Test              2018/08/08            Test Site       SR10-H


1880MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             11                            -0.0162
                 3.8                              8                            -0.0118
                 3.4                             -21                           0.0309


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -20                           0.0294
                 -20                             12                            -0.0176
                 -10                             25                            -0.0367
                 0                               21                            -0.0309
                +10                               8                            -0.0118
                +20                              -21                           0.0309
                +30                              -23                           0.0338
                +40                              15                            -0.0220
                +50                              -26                           0.0382




                                            Page: 619 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 1: LTE Band 2
 Date of Test              2018/08/08            Test Site       SR10-H


1900MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             16                            -0.0230
                 3.8                              8                            -0.0115
                 3.4                             20                            -0.0288


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             16                            -0.0230
                 -20                             18                            -0.0259
                 -10                             -37                           0.0532
                 0                               15                            -0.0216
                +10                              -32                           0.0460
                +20                               -2                           0.0029
                +30                              25                            -0.0359
                +40                              23                            -0.0331
                +50                              -22                           0.0316




                                            Page: 620 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 2: LTE Band 4
 Date of Test              2018/08/08            Test Site       SR10-H


1720MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                              -4                           0.0059
                 3.8                             22                            -0.0327
                 3.4                             -42                           0.0624


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -36                           0.0535
                 -20                             -26                           0.0386
                 -10                             13                            -0.0193
                 0                                7                            -0.0104
                +10                              18                            -0.0267
                +20                              -28                           0.0416
                +30                              24                            -0.0357
                +40                              -30                           0.0446
                +50                              -29                           0.0431




                                            Page: 621 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 2: LTE Band 4
 Date of Test              2018/08/08            Test Site       SR10-H


1732.5MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             18                            -0.0265
                 3.8                             -30                           0.0441
                 3.4                              -2                           0.0029


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             11                            -0.0162
                 -20                             -24                           0.0353
                 -10                              -3                           0.0044
                 0                               -26                           0.0382
                +10                               3                            -0.0044
                +20                              11                            -0.0162
                +30                              11                            -0.0162
                +40                              -42                           0.0617
                +50                               5                            -0.0073




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Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 2: LTE Band 4
 Date of Test              2018/08/08            Test Site       SR10-H


1745MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             14                            -0.0201
                 3.8                             -40                           0.0575
                 3.4                             24                            -0.0345


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -31                           0.0446
                 -20                              -7                           0.0101
                 -10                              9                            -0.0129
                 0                               20                            -0.0288
                +10                               -3                           0.0043
                +20                              13                            -0.0187
                +30                              -10                           0.0144
                +40                              -40                           0.0575
                +50                              15                            -0.0216




                                            Page: 623 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 3: LTE Band 5
 Date of Test              2018/08/08            Test Site       SR10-H


829MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             -18                           0.0267
                 3.8                              3                            -0.0045
                 3.4                              -6                           0.0089


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                              6                            -0.0089
                 -20                             12                            -0.0178
                 -10                             -18                           0.0267
                 0                               21                            -0.0312
                +10                              -34                           0.0505
                +20                               -1                           0.0015
                +30                              18                            -0.0267
                +40                              -10                           0.0149
                +50                              -13                           0.0193




                                            Page: 624 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 3: LTE Band 5
 Date of Test              2018/08/08            Test Site       SR10-H


836.5MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                              -1                           0.0015
                 3.8                             -28                           0.0411
                 3.4                             11                            -0.0162


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -15                           0.0220
                 -20                             -34                           0.0500
                 -10                             -34                           0.0500
                 0                               -40                           0.0588
                +10                              -30                           0.0441
                +20                               -6                           0.0088
                +30                              20                            -0.0294
                +40                              -11                           0.0162
                +50                              14                            -0.0206




                                            Page: 625 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 3: LTE Band 5
 Date of Test              2018/08/08            Test Site       SR10-H


844MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             20                            -0.0288
                 3.8                             12                            -0.0173
                 3.4                             -37                           0.0532


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -18                           0.0259
                 -20                             -39                           0.0561
                 -10                             -20                           0.0288
                 0                               -20                           0.0288
                +10                               5                            -0.0072
                +20                              12                            -0.0173
                +30                              -31                           0.0446
                +40                              22                            -0.0316
                +50                               9                            -0.0129




                                            Page: 626 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 4: LTE Band 12
 Date of Test              2018/08/08            Test Site       SR10-H


704MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             -23                           0.0342
                 3.8                              -4                           0.0059
                 3.4                              3                            -0.0045


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                              -5                           0.0074
                 -20                             -28                           0.0416
                 -10                              -5                           0.0074
                 0                               -11                           0.0163
                +10                              -27                           0.0401
                +20                              -42                           0.0624
                +30                               8                            -0.0119
                +40                              -33                           0.0490
                +50                              -10                           0.0149




                                            Page: 627 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 4: LTE Band 12
 Date of Test              2018/08/08            Test Site       SR10-H


707.5MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             12                            -0.0176
                 3.8                             -29                           0.0426
                 3.4                             -20                           0.0294


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             15                            -0.0220
                 -20                              2                            -0.0029
                 -10                              -7                           0.0103
                 0                               16                            -0.0235
                +10                              -26                           0.0382
                +20                               -4                           0.0059
                +30                               6                            -0.0088
                +40                               3                            -0.0044
                +50                               1                            -0.0015




                                            Page: 628 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 4: LTE Band 12
 Date of Test              2018/08/08            Test Site       SR10-H


711MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             -42                           0.0604
                 3.8                              -1                           0.0014
                 3.4                             -31                           0.0446


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                              -7                           0.0101
                 -20                              -5                           0.0072
                 -10                              -7                           0.0101
                 0                                2                            -0.0029
                +10                               9                            -0.0129
                +20                              -38                           0.0546
                +30                              -35                           0.0503
                +40                               4                            -0.0058
                +50                              -15                           0.0216




                                            Page: 629 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 5: LTE Band 13
 Date of Test              2018/08/08            Test Site       SR10-H


782MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             -26                           0.0382
                 3.8                             -29                           0.0426
                 3.4                             22                            -0.0323


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -21                           0.0309
                 -20                             10                            -0.0147
                 -10                             -10                           0.0147
                 0                                -2                           0.0029
                +10                              -15                           0.0220
                +20                              -11                           0.0162
                +30                              -15                           0.0220
                +40                               9                            -0.0132
                +50                              -30                           0.0441




                                            Page: 630 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 6: LTE Band 14
 Date of Test              2018/08/08            Test Site       SR10-H


793MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             20                            -0.0297
                 3.8                              5                            -0.0074
                 3.4                             -39                           0.0579


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                              2                            -0.0030
                 -20                              -1                           0.0015
                 -10                             24                            -0.0357
                 0                               -23                           0.0342
                +10                              -27                           0.0401
                +20                              -35                           0.0520
                +30                               6                            -0.0089
                +40                               5                            -0.0074
                +50                               -2                           0.0030




                                            Page: 631 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 7: LTE Band 66
 Date of Test              2018/08/08            Test Site       SR10-H


1720MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             18                            -0.0267
                 3.8                              -3                           0.0045
                 3.4                             -39                           0.0579


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -27                           0.0401
                 -20                             25                            -0.0371
                 -10                             -21                           0.0312
                 0                               -36                           0.0535
                +10                               4                            -0.0059
                +20                              16                            -0.0238
                +30                              -21                           0.0312
                +40                               8                            -0.0119
                +50                               4                            -0.0059




                                            Page: 632 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 7: LTE Band 66
 Date of Test              2018/08/08            Test Site       SR10-H


1745MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                              -5                           0.0073
                 3.8                             14                            -0.0206
                 3.4                             22                            -0.0323


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                              -3                           0.0044
                 -20                             11                            -0.0162
                 -10                             20                            -0.0294
                 0                               -21                           0.0309
                +10                              -23                           0.0338
                +20                               9                            -0.0132
                +30                              -25                           0.0367
                +40                              -10                           0.0147
                +50                               -7                           0.0103




                                            Page: 633 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 7: LTE Band 66
 Date of Test              2018/08/08            Test Site       SR10-H


1770MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             22                            -0.0316
                 3.8                             -37                           0.0532
                 3.4                             -38                           0.0546


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -24                           0.0345
                 -20                             -33                           0.0474
                 -10                             -32                           0.0460
                 0                               22                            -0.0316
                +10                              -24                           0.0345
                +20                              -27                           0.0388
                +30                              -24                           0.0345
                +40                              -15                           0.0216
                +50                              20                            -0.0288




                                            Page: 634 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 8: LTE Band 71
 Date of Test              2018/08/08            Test Site       SR10-H


673MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                             10                            -0.0149
                 3.8                             -26                           0.0386
                 3.4                             -10                           0.0149


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                              4                            -0.0059
                 -20                             -36                           0.0535
                 -10                              -1                           0.0015
                 0                                4                            -0.0059
                +10                              19                            -0.0282
                +20                              -42                           0.0624
                +30                              -31                           0.0461
                +40                              13                            -0.0193
                +50                              -28                           0.0416




                                            Page: 635 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 8: LTE Band 71
 Date of Test              2018/08/08            Test Site       SR10-H


680.5MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                              2                            -0.0029
                 3.8                             -11                           0.0162
                 3.4                             25                            -0.0367


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             25                            -0.0367
                 -20                              -7                           0.0103
                 -10                             13                            -0.0191
                 0                                8                            -0.0118
                +10                              20                            -0.0294
                +20                               5                            -0.0073
                +30                              -26                           0.0382
                +40                               1                            -0.0015
                +50                              17                            -0.0250




                                            Page: 636 of 648


Report No.: 1870209R-HPUSP17V00-A



 Product                   LE910C4-NF
 Test Item                 Frequency Stability Under Temperature & Voltage Variations
 Test Mode                 Mode 8: LTE Band 71
 Date of Test              2018/08/08            Test Site       SR10-H


688MHz
           Voltage (VDC)                Frequency Error(Hz)             Frequency Error(ppm)
                 4.2                              -5                           0.0072
                 3.8                             -24                           0.0345
                 3.4                             -18                           0.0259


             Temperature                Frequency Error (Hz)           Frequency Error (ppm)
                 -30                             -26                           0.0374
                 -20                             -40                           0.0575
                 -10                             16                            -0.0230
                 0                               -18                           0.0259
                +10                               8                            -0.0115
                +20                              -20                           0.0288
                +30                              -41                           0.0590
                +40                              -18                           0.0259
                +50                              -42                           0.0604




                                            Page: 637 of 648



Document Created: 2018-09-28 09:48:47
Document Modified: 2018-09-28 09:48:47

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