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12.5. LOOPBACK TEST
1. Set the CMD60 to MANUAL TEST.
2. Set the CMD60 TRAFFIC CARRIER to 5.
3. Send batch file “TESTMODE”.
4. On the CMD60, press “SETUP CONNECT”.
5. Check the Power (NTP): It must be +20 to +25 dBm.
6. Press MODULATION.
7. Set Data Type to “Fig.31”.
8. Check the Frequency Drift: it must be 0 ± 45 kHz/ms.
9. Check the Frequency Offset: it must be 0 ± 40 kHz.
10. Check the Deviation (Max. ± B Field) with Data Type “Fig.31”: it must be 202 to 404 kHz.
11. Press MENU UP.
12. Press POWER RAMP.
13. Check the Burst fits mask.
14. Press MENU UP.
15. Press BER.
16. Note the Sensitivity (reduce RF LEVEL for a BER of approx. 1000ppm) : the RF LEVEL must be < - 88 dBm.
17. Press MENU UP.
18. Press BEARER RELEASE.
Note:
These tests can be repeated on Traffic Carriers 5 and 9.
12.6. TELEPHONE LINE TESTS
1. Connect the tel line from the base under test to the line simulator.
2. Send batch file “OFFHOOK”.
3. Check if the green “In-Use” LED is on.
4. Set the line current to 40 mA on the line simulator.
5. Send batch file “ONHOOK”.
6. Check that the line current is 0 ± 0.5 mA.
7. Check if the green “In-Use” LED is off.
8. Send batch file “OFFHOOK”.
9. Check the DC Voltage on TP45. It must be 9.5 ± 0.5V.
10. Send batch file “LINIMP 1”.
11. Check the DC Voltage on TP45. It must be < 4.0V.
12. Send batch file “LINIMP 0”.
13. Send batch file “PULDIAL”.
14. Observe on the line simulator current meter that 5 dial pulses are output causing the current to reduce to approx. 20mA.
15. Send batch file “STRTDTMF”.
16. Check on the scope that a DTMF waveform is output on that tel line.
17. Send batch file “STOPDTMF”.
18. Disconnect the tel line from the base under test to the line simulator.
19. Connect the “Bell” Oscillator to the tel line.
20. Set the “Bell” Oscillator voltage to 32V RMS 23Hz.
21. Send batch file “RINGDET”.
22. Check that the ringing voltage has been detected (1 = detected).
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KX-TCD953RUB
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