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9.4 LOOPBACK TESTS
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1. Connect the RF input cable from the CMD60 to the "0V" and "ANT" antenna pads.
2. Switch on the 2.4V supply.
3. Switch the handset on at the keypad.
4. Enter "RDEEPROM 00 4A 01". This will return the value "25" if a base has been registered to
the handset, or "FF" if there is no base registered.
5. If a base is not registered to the unit (i.e. "FF" returned in step 4) then enter "SETBASE" to
induce registration.
6. Set the CMD60 to MANUAL TEST mode.
7. Enter "TESTMODE" on the PC.
8. Enter "RDEEPROM 00 36 05" to obtain the base RFPI identifier.
9. Set the RFPI in the CMD60 to the value obtained in the previous step.
10. Press SETUP CONNECT on the CMD60.
11. Check the power (NTP): it must be between 20 and 25dBm.
12. Press MODULATION.
13. Set DATA TYPE to FIG 31.
14. Check frequency drift: must be 0 ± 35 kHz/ms.
15. Check frequency offset: must be 0 ± 40 kHz.
16. Check deviation or modulation (max ± B field) with data type "FIG 31": must be 320kHz to
400kHz.
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