6-38
Troubleshooting Waveforms:
Bluetooth Troubleshooting Waveforms
6.15 Bluetooth Troubleshooting Waveforms
A Bluetooth radiated or conducted signal at 2.402 GHz and a LF radiated signal at 125 kHz can be
used to verify the receiver and transmitter on the radio are operational. A spectrum analyzer (such as
an Aeroflex 3920 Digital Radio Test Set) can be used to verify the presence of BT signal at the BT
antenna contact pin (M1301), while the LF signal can be tapped at C2454 or C2457 on the main
board’s top plane. A signal generator can be be used to test the APX 3000 BT/LF receivers.
Radiated Bluetooth TX/RX testing should be performed before conducted testing is performed in the
fixture since the radio does not have to be opened for radiated testing. To test the presence of a
radiated Bluetooth TX signal, an external Bluetooth antenna should be connected to the input of the
sprectrum analyzer. To test the presence of a radiated Bluetooth RX signal, an external Bluetooth
antenna should be connected to the output of a signal generator set to TX CW 2.402 GHz. The radio
front housing (below the ON/OFF switch) should be brought near the antenna during testing. The
following is the procedure to activate the Bluetooth/LF transmitter or receiver using RCMP
commands:
To send an RCMP command, connect a RS-232 com port GCAI cable between the radio and PC.
Start HyperTerminal on com 1 (typical RS-232 port) using these settings: 9600 baud, 8-bit, non-
parity, stop bit = 1, HW flow control. Type, AT#DEBUG”, then type rcmpraw:000c”.
Bluetooth Command to TX 2.402 GHz CW
Probe the Bluetooth antenna contact pin (M1301) on Main board with a 6 dB attenuator in-line
connected to a spectrum analyzer. Set the spectrum analyzer to 2.402 GHz center, 10 MHz span,
RBW of 300 kHz, a VBW of 1 MHz, and a sweep time of 2.5 ms. There are two commands to verify
a spectrum analyzer can read a 2.402 GHz wave from the radio BT transmitter. Enter the
rcmpraw:00390207 command first, then enter rcmpraw:0039020100000F0006 (on SR 7.9 SW, use
this command:
rcmpraw:0039020100000F, but be aware that the TX signal may time out in less than 10 minutes).
Successful Example Entry:
Type:rcmpraw:000c
Response:800c00
Type:rcmpraw:00390207
Response:8039000207
Type:rcmpraw:0039020100000F0006
Response:8039000201
Table 6-2. Bluetooth Command to TX
TEST
RCMPRAW CMD
RESPONSE
Bluetooth TX at 2.402 GHz
CW Modulation
rcmpraw: 00390207
Success: 8039000207
Failure: 8039010207
rcmpraw: 0039020100000F0006
Success: 8039000201
Failure: 8039010201
Summary of Contents for Astro APX 3000
Page 1: ...APXTM TWO WAY RADIOS APX 3000 DETAILED SERVICE MANUAL ...
Page 2: ......
Page 4: ...Notes ...
Page 6: ...vi Document History Notes ...
Page 10: ...x Table of Contents Notes ...
Page 12: ...xii List of Tables Notes ...
Page 18: ...xviii List of Figures Notes ...
Page 22: ...xxii CommercialWarranty Notes ...
Page 46: ...3 20 Theory of Operation Main Board Notes ...
Page 84: ...3 58 Theory of Operation Bluetooth Notes ...
Page 208: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 222: ...7 14 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 282: ...8 60 Schematics Boards Overlays and Parts Lists Main Board Block UHF1 84012513001_A Notes ...
Page 390: ...8 168 Schematics Boards Overlays and Parts Lists Main Board Block VHF 84012512001_A Notes ...
Page 456: ...9 8 Debugging Fixture Powering up Covert Board Notes ...
Page 468: ...Glossary 10 Glossary Notes ...
Page 472: ...Index 4 Index Notes ...
Page 473: ......