Panasonic KX-TCD705RUM - Set the Clock Frequency; Loopback Tests

7.3. SET THE CLOCK FREQUENCY
1. Turn on the 9V supply.
2. Enter "DEACTMAC" from the PC to switch off the RF unit.
3. Enter "CONTTX 0" to start continuous RF transmission.
4. Enter "RDEEPROM 00 00 0F" to display the first 15 hexadecimal bytes of the EEPROM.
The frequency adjustment value is displayed in the first two locations with the most significant byte (MSB) first.
5. Connect the frequency counter probe to TP101, or pin12 of the RF module, to measure the SYRI signal from the BBIC.
6. The clock frequency should be within 10,368,000Hz ± 10Hz. If not then enter "SETFREQ nn nn" where nn nn are the clock
frequency adjustment values. An increase in the value will lower the clock frequency and vice versa. The maximum value is 01
FF.
7. Switch off the 9V supply.
7.4. LOOPBACK TESTS
1. Connect the RF Cable from the CMD60 to the RF 1 line (IC1 pin44) and Ground plane of the base P.C.B. Use the minimum
amount of stripped/exposed cable to solder to the contacts.
2. Switch on the 9V supply.
3. Set the CMD60 to MANUAL TEST mode.
4. Set the CMD60 TRAFFIC CARRIER to 0.
5. Invoke the "TESTMODE" batch file from the PC.
6. Press ACCEPT RFPI and SETUP CONNECT on the CMD60.
7. Check the power (NTP): it must be between 20 and 25dBm.
8. Press MODULATION.
9. Set DATA TYPE to FIG 31.
10. Check frequency drift: must be 0 ± 35 kHz/ms.
11. Check frequency offset: must be 0 ± 40 kHz.
12. Check deviation or modulation (max ± B field) with data type "FIG 31": must be 320kHz to 400kHz.
13. Press Menu Up "↑" on the CMD60.
14. Press POWER RAMP.
15. Check that the burst fits the mask.
16. Press Menu Up "↑" on the CMD60.
17. Press BER.
18. Obtain the sensitivity by slowly reducing RF LEVEL until the BER falls below 1000ppm. The sensitivity is the RF LEVEL reading
at this point. It must be < -88dBm.
19. Press Menu Up "↑" on the CMD60.
20. Press BEARER RELEASE and switch off the 9V supply.
21. Disconnect the RF cable from the PCB.
Note:
These tests can also be repeated on TRAFFIC CARRIERS 5 and 9.
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KX-TCD705RUM / KX-TCD705RUS