Panasonic KX-TG9471B Service Manual page 41

Items
(K)* Transmitted Power Con-
firmation
(L)* Modulation Check and
Adjustment
(M)* Frequency Offset Check
(N)* Frequency Drift Confir-
mation
(O)* Sensitivity Receiver
Confirmation
(P)* Timing Confirmation
(Q)* RSSI Level Confirmation
(R)* Power RAMP Confirma-
tion
Check
Point
- Remove the Antenna before starting step from 1 to 7.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Short A_1 and GND.
• Test mode: FP
• Traffic Carrier: 2
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
• RF LEVEL = -70 dBm.
2. Execute the command "testmode".
3. Execute the command "sendchar dmv 2 2".
4. Check that "Signalling Status" has been set to "Locked", then press "ACCEPT
RFPI".
5. Initiate connection from Dect tester ("set up connect")
6. Execute the command "ANT1".
7. Confirm that the NTP value at ANT is 17dBm ~ 20.5 dBm.
- Follow steps 1 to 6 of (K).
7.Confirm that the B-Field Modulation is -350 ~ -450/+350 ~ +450 kHz/div using
data type Fig31.
8.Adjust the B-Field Modulation if required. (Execute the command "readmod"
and "wrtmod xx", where xx is the value.)
- Follow steps 1 to 6 of (K).
7.Confirm that the frequency offset is < ± 45 kHz.
- Follow steps 1 to 6 of (K).
7.Confirm that the frequency drift is < ± 30 kHz/ms.
- Follow steps 1 to 6 of (K).
7.Set DECT tester power to -90 dBm.
8.Confirm that the BER is < 1000 ppm.
- Follow steps 1 to 6 of (K).
7.Confirm that the Timing accuracy is < ± 2.0 ppm.
- Follow steps 1 to 6 of (K).
7.Execute the command "readrssi".
8. Confirm that the returned value is 21 ± A (hex).
- Follow steps 1 to 6 of (K).
7.Confirm that Power RAMP is matching.
Procedure
41
KX-TG9471B/KX-TG9472B/KX-TGA939T
Check or
Replace Parts
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811
IC501, IC801,
R807, R806,
R804, R808,
C809, D801,
R801, R804,
L803, L812,
C802, C811