Tune Up Info Rev 2

FCC ID: DD4BLX1J11

Parts List/Tune Up Info

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FCCID_4357121

Description: BLX1 Bodypack UHF Transmitter DRWG. BLX1-7 Refer To Drawing NO. 190-15181, 190-21280 & 190-23742 Page 20 of 49 1.1 Apply +3 V to the battery terminals with the proper polarity. 1.2 Make sure the gain pot (TR120) is in the lowest setting, fully counter-clockwise. 1.3 Remove L607 to disengage the antenna. 1.4 Connect the audio input generator to a cable plugged into connector CON100, via the BLX1 TQG mic-jack board. Alternatively, for the ATE fixture, the audio signal may be input at TPA0. 1.5 Turn on the BLX1 by flipping the POWER switch (SW400), or on the ATE fixture short TP_PWR to TP_DGND. 1.6 The transmitter will power up with its frequency set to the previously selected channel. Use the channel button to select a test frequency from chart, (see Table 9). RF Tuning 2.0 VCO Tuning: Set the transmitter to LOW channel (see Table 9). Tune CV500 for a DC voltage at TP_PLL_TV in the range 0.9-1.1V for all bands except H8, H8E, H10, H11, H62, J10, JB, K3E, R12, S8, T11, and X7. Tune H8, H8E, H10, H11, H62, J10, K3E, R12, and S8 to 1.4-1.6V. Tune JB to 1.9-2.1V. Tune X7 to 2.0-2.2V. Tune T11 to 3.4-3.6V. 2.1 Set the transmitter to HIGH channel (see Table 9). Make sure that the voltage at TP_PLL_TV is  4.6V for all bands. 2.2 Frequency Alignment: Make sure no audio signal is applied to the transmitter, ideally by using a TQG connector with the audio pin shorted to ground. Set the transmitter to MID (see Table 9). Use a frequency counter or spectrum analyzer to measure the carrier frequency at the node between L606 and C625. Adjust CV501 while monitoring the output carrier such that the frequency is within  1 kHz of the specified frequency (per Table 9). This test is not valid for board group 190-23742. 2.3 RF Power Using a power meter or spectrum analyzer, check the power level of the carrier at LOW/CENTER/HIGH (see Table 9) at MTG1 (I600) and verify that the reading from the spectrum analyzer agrees with the values in the following table (Table 10). Account for cable losses. Table 10 RF Power GROUP Pout RANGE H8 & H8E* 6 – 10 dBm H62 10 dBm  3 dB H9, H10, H10E 10 dBm  3 dB H11** 7 – 12 dBm J10 10 dBm  3 dB J11** 7 – 12 dBm M15 & M17 10 dBm  3 dB CONFIDENTIAL Rev. Description Rev. Description © 2015-2017 Shure Inc. TYPED: L. Allen, T. Marco, I. Singh 01 Initial Release 11/2012 05 CR#1022145 Add X variant K.Stanton 12/2017 ECO 1001666. Updated Troubleshooting 06 CR#1023578 Change H62 RF limits for 02 CHECKED: K. Stanton 12/2017 Guide TPM Indonesia 03 ECR 1004008 Update JB Maps (LVT) 07 CR# ???? Change H62 RF limits back for APPROVED: S. Grad 12/2017 Taiwan. Indonesia is not using H62 band 04 CR 1010904 Updated with new board group 190-23742 (LVT). Add variants S,T,W(KPS)

Description: BLX1 Bodypack UHF Transmitter DRWG. BLX1-7 Refer To Drawing NO. 190-15181, 190-21280 & 190-23742 Page 21 of 49 K12 & K14 10 dBm  3 dB L19 10 dBm  3 dB Q24 10 dBm  3 dB Q25 10 dBm  3 dB Q26 10 dBm  3 dB S8* 6 – 10 dBm R12* 6 – 10 dBm JB* 6 – 10 dBm T11* 6 – 10 dBm X7* 6 – 10 dBm K3E* 6 – 10 dBm M16 10 dBm  3 dB M18 10 dBm  3 dB P18 10 dBm  3 dB *Limited to 10 dBm maximum output power. **Power specification adjusted to accommodate SAR compliance Deviation Adjustment The following procedure requires a tuned BLX4 or other IF receiver that is designed to operate in the BLX1 bodypack transmitter’s band. 3.1 Determine Deviation Reference Level • Connect the RF signal generator to one of the receiver antenna ports, or connect antennas to transmit wirelessly. The BLX1 bodypack should be OFF. • Set the receiver channel to match that of the bodypack transmitter being tested. • Set the RF signal generator to the corresponding carrier frequency. Set its RF power out to –50 dBm. • On the RF signal generator, apply a dual sine modulation function with FM rate1 = 1 kHz, FM rate2 = 32.768 kHz, and ampl = 12%. Set deviation to 37.5 kHz. (For X7 band, apply a dual sine modulation function with FM rate1 = 1 kHz, FM rate2 = 32.768 kHz, and ampl = 16%. Set deviation to 27.5 kHz.) Note: The above settings correspond to approximately 33 kHz audio deviation (24 kHz audio deviation for X7 band). • Measure and record the audio level at the unbalanced output of the receiver. This is the deviation reference level (0dBr). • Disconnect and turn off the RF signal generator. 3.2 Tune Compander & Deviation • Apply +3V to the battery terminals on the BLX1 bodypack and power up the unit (SW400). Make sure the gain pot (TR120) is in the lowest setting, fully counter-clockwise. • Connect the audio generator output to the BLX1 audio input, and set the audio generator frequency to 1kHz with an initial level of -15.8 dBV (13.6 dBu). • Adjust the generator level to give -15.8 dBV (13.6 dBu)  0.1 dB at TPA1. CONFIDENTIAL Rev. Description Rev. Description © 2015-2017 Shure Inc. TYPED: L. Allen, T. Marco, I. Singh 01 Initial Release 11/2012 05 CR#1022145 Add X variant K.Stanton 12/2017 ECO 1001666. Updated Troubleshooting 06 CR#1023578 Change H62 RF limits for 02 CHECKED: K. Stanton 12/2017 Guide TPM Indonesia 03 ECR 1004008 Update JB Maps (LVT) 07 CR# ???? Change H62 RF limits back for APPROVED: S. Grad 12/2017 Taiwan. Indonesia is not using H62 band 04 CR 1010904 Updated with new board group 190-23742 (LVT). Add variants S,T,W(KPS)

Description: BLX1 Bodypack UHF Transmitter DRWG. BLX1-7 Refer To Drawing NO. 190-15181, 190-21280 & 190-23742 Page 22 of 49 • Tune compressor: adjust TR160 to get -7.67 dBV (5.47 dBu)  0.15 dB at TPA2. • Tune deviation: adjust TR200 until the audio level at the unbalanced output of the BLX4 receiver is equal to -3.9dBr (relative to deviation reference level)  0.25dB. If using a modulation analyzer, adjust for deviation of 29kHz +/- 150Hz (For X7 band: 21kHz +/- 150Hz). VI Test for Product Acceptance Tests to be done in sequential order. NOTE 1: It is highly recommended that the following tests be conducted in an RF screen room. NOTE 2:Test numbers are for ambient conditions of 25°C ± 5°C (77°F ± 9°F) and relative humidity 10-60%. Operation near climate limits may result in the following variances: • Audio Deviation Test: Measured deviation should be within ±10kHz of nominal value (See “Audio Deviation Test” under the “Closed Box Acceptance Tests” for more detail) • RF Output Power: Measured power should be at least –5dBm (See “RF Output Power Test” under the “Closed Box Acceptance Tests” for more detail) • RF Frequency Stability: Measured frequency should be within +/- 5kHz of the transmitter frequency (See “RF Frequency Stability Test” under the “Closed Box Acceptance Tests” for more detail) 1.0 Initial Setup Connect the (+) terminal of the power supply through a milliammeter to the positive battery terminal and the (-) terminal to the negative battery terminal. Connect a DC Voltmeter across the battery terminals. Connect the audio generator to a cable plugged into connector CON100. Connect the RMS audio voltmeter across the generator. Connect the audio distortion analyzer between TPA2 (output of VCA) and ground. 2.0 Current Consumption Test With +3Vdc to the battery terminals and the power turned on (SW400), measure the current drain using a DC milliammeter. It should be 110  15mA. 3.0 Reverse Battery Protection Test Adjust the bench power supply voltage to -3.0  0.1 Vdc as indicated on the DC voltmeter. Measure the current drain on the milliammeter. The current should be less than 0.5 mA. 4.0 Voltage Regulation Check With power applied properly, and the unit switched on, the following DC voltages should be measured at the corresponding test points with respect to ground (TPEGND). TPBATT+ (Battery input) = 3  0.2 Volts TP_5V (Power Converter) = 5  0.2 Volts TP_+3.3V (Power Converter) = 3.3  0.2 Volts TPA1 (Audio Preamp) = 2.5  0.2 Volts TPA3 (Tone Key Summing Amp) = 2.5  0.2 Volts TPVREF = 2.5  0.1 Volts CONFIDENTIAL Rev. Description Rev. Description © 2015-2017 Shure Inc. TYPED: L. Allen, T. Marco, I. Singh 01 Initial Release 11/2012 05 CR#1022145 Add X variant K.Stanton 12/2017 ECO 1001666. Updated Troubleshooting 06 CR#1023578 Change H62 RF limits for 02 CHECKED: K. Stanton 12/2017 Guide TPM Indonesia 03 ECR 1004008 Update JB Maps (LVT) 07 CR# ???? Change H62 RF limits back for APPROVED: S. Grad 12/2017 Taiwan. Indonesia is not using H62 band 04 CR 1010904 Updated with new board group 190-23742 (LVT). Add variants S,T,W(KPS)

Description: BLX1 Bodypack UHF Transmitter DRWG. BLX1-7 Refer To Drawing NO. 190-15181, 190-21280 & 190-23742 Page 23 of 49 5.0 Frequency Response Test Make sure the gain pot (TR120) is in the lowest setting, fully counter-clockwise. Set the audio generator frequency to 1kHz with an amplitude of -20.0dBu. Activate the 30kHz LPF on the audio generator and disengage the 400Hz HPF. Record the 1kHz AC level at TPA2 - this is the 1kHz reference level. Change the generator’s frequency to 100Hz and measure the level at TPA2 to be –1.8dB  0.25dB relative to the 1kHz reference level. Next, change the generator’s frequency to 10kHz and measure the level at TPA2 to be +3.0dB  0.25dB relative to the 1kHz reference level. 6.0 Distortion Test Make sure the gain pot (TR120) is in the lowest setting, fully counter-clockwise. Set the audio generator frequency to 1kHz with an amplitude of -10.0dBu. Activate the 30kHz LPF on the audio generator. Measure the total harmonic distortion and noise (THD+N) at TPA2 to be less than 0.5%. 7.0 RF Output Power and Frequency Stability. Choose any group and channel free of interference. Using a spectrum analyzer with the appropriate-band UA820 antenna, measure the approximate near field radiated power as follows: Set the SPAN=100 MHz, REF LVL=10dBm. Extend the UA820 away from the analyzer into the horizontal plane (straight out). Align the BLX1 antenna parallel to the UA820 as close as possible. Move the unit along the UA820 antenna and rotate it until you find a maximum peak. Do a peak search and measure the power to be at least 2 dBm for J10, M15, M16, M17, K12, K14, L19, P18, Q25 and Q26 bands and at least 0 dBm for H8, H8E, H9, H10, H11, H62, K3E, R12, JB, S8, T11, and X7 bands. Set span to 200 kHz and peak search onto the carrier. Measure the frequency to be within +/- 5 kHz of the nominal frequency you are testing. (See at end of the document.) 8.0 Tone Key Level Test - View transmitting carrier on the spectrum analyzer with a span of 100 kHz. Use the “Peak Search, Marker Delta, Next Peak” soft-keys on the analyzer. - Use a DC power supply voltage of 2 – 3 Vdc (“fresh battery,” green LED). - Measure the 32.768 kHz tone key level to be -22 dBc  3 dB. - Lower DC power supply voltage to 1.8 Vdc (“low battery,” red LED). - Measure the 32.768 kHz tone key level to be -15 dBc  3 dB. CONFIDENTIAL Rev. Description Rev. Description © 2015-2017 Shure Inc. TYPED: L. Allen, T. Marco, I. Singh 01 Initial Release 11/2012 05 CR#1022145 Add X variant K.Stanton 12/2017 ECO 1001666. Updated Troubleshooting 06 CR#1023578 Change H62 RF limits for 02 CHECKED: K. Stanton 12/2017 Guide TPM Indonesia 03 ECR 1004008 Update JB Maps (LVT) 07 CR# ???? Change H62 RF limits back for APPROVED: S. Grad 12/2017 Taiwan. Indonesia is not using H62 band 04 CR 1010904 Updated with new board group 190-23742 (LVT). Add variants S,T,W(KPS)

Description: BLX1 Bodypack UHF Transmitter DRWG. BLX1-7 Refer To Drawing NO. 190-15181, 190-21280 & 190-23742 Page 24 of 49 “Closed Box” Acceptance Tests RF Output Power Test Test Equipment Spectrum Analyzer UA820 antenna Set Up Set the BLX1 transmitter on any frequency free of interference. Place the corresponding UA820 antenna on the spectrum analyzer input. Set the spectrum analyzer center frequency to the same frequency as the transmitter. Set the span to 100 MHz and the reference level to 10 dBm. Procedure Measure the approximate near-field radiated power by aligning the BLX1 antenna parallel to the UA820 antenna and keeping the antennas together as close as possible. Move the unit along the UA820 antenna and rotate it until you find a maximum peak. Perform a peak search and measure the power to be at least 0 dBm. RF Frequency Stability Test Test Equipment Frequency Counter UA820 antenna Set Up Set the BLX1 transmitter on any frequency free of interference. Place the corresponding UA820 antenna on the frequency counter input. Procedure Hold the BLX1 antenna up to the frequency counter antenna. Measure the frequency to be within +/- 5 kHz of the transmitter frequency. Audio Deviation Test Test Equipment Spectrum Analyzer UA820 antenna Set Up Set the BLX1 transmitter on any frequency free of interference. Make sure the gain pot (TR120) is in the lowest setting, fully counter-clockwise. Place the corresponding UA820 antenna on the spectrum analyzer input. Set the spectrum analyzer center frequency to the same frequency as the transmitter. Set the span to 100 kHz and the reference level to 10 dBm. Inject a 1kHz tone at –7.65dBu into the input jack of the BLX1. Set the spectrum analyzer to max hold, by using the “Trace” and “Max Hold A” buttons. Hold the BLX1 parallel to the UA820. CONFIDENTIAL Rev. Description Rev. Description © 2015-2017 Shure Inc. TYPED: L. Allen, T. Marco, I. Singh 01 Initial Release 11/2012 05 CR#1022145 Add X variant K.Stanton 12/2017 ECO 1001666. Updated Troubleshooting 06 CR#1023578 Change H62 RF limits for 02 CHECKED: K. Stanton 12/2017 Guide TPM Indonesia 03 ECR 1004008 Update JB Maps (LVT) 07 CR# ???? Change H62 RF limits back for APPROVED: S. Grad 12/2017 Taiwan. Indonesia is not using H62 band 04 CR 1010904 Updated with new board group 190-23742 (LVT). Add variants S,T,W(KPS)

Description: BLX1 Bodypack UHF Transmitter DRWG. BLX1-7 Refer To Drawing NO. 190-15181, 190-21280 & 190-23742 Page 25 of 49 Move the unit around the antenna until the waveform stabilizes. Using the “Peak Search, Marker Delta, Next Peak” soft-keys on the analyzer, measure the span of the waveform to be 66kHz +/- 7kHz PEAK TO PEAK. Note: For X7 Band the span will be 44kHz +/- 7kHz PEAK TO PEAK due to Korean requirements. Tone Key Level Test Test Equipment Spectrum Analyzer UA820 antenna Set Up Set the BLX1 transmitter on any frequency free of interference. Make sure the gain pot (TR120) is in the lowest setting, fully counter-clockwise. Do not test with audio input un-terminated, so connect audio generator but make sure signal is turned off. Place the corresponding UA820 antenna on the spectrum analyzer input. Set the spectrum analyzer center frequency to the same frequency as the transmitter. Set the span to 100 kHz and the reference level to 10 dBm. Procedure Hold the unit up to the UA820 antenna. Use the “Peak Search, Marker Delta, Next Peak” soft- keys on the analyzer. The 32.768 kHz tone key level should measure between -15 dBc and -30 dBc (below the carrier power level). CONFIDENTIAL Rev. Description Rev. Description © 2015-2017 Shure Inc. TYPED: L. Allen, T. Marco, I. Singh 01 Initial Release 11/2012 05 CR#1022145 Add X variant K.Stanton 12/2017 ECO 1001666. Updated Troubleshooting 06 CR#1023578 Change H62 RF limits for 02 CHECKED: K. Stanton 12/2017 Guide TPM Indonesia 03 ECR 1004008 Update JB Maps (LVT) 07 CR# ???? Change H62 RF limits back for APPROVED: S. Grad 12/2017 Taiwan. Indonesia is not using H62 band 04 CR 1010904 Updated with new board group 190-23742 (LVT). Add variants S,T,W(KPS)


Document Created: 2019-07-16 02:53:22
Document Modified: 2019-07-16 02:53:22
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