Panasonic KX-TG2448BXF, Service Manual

Page: 26 / 98

7.4.3. Check Table for RF part
No. Item BU (Base Unit) Check HS (HandSet) Check
1 Link Confirmation Normal
HS, BU Mode [Normal Mode]
1. Register Regular HS to BU (to be checked).
2. Press [Talk] key of the Regular HS to
establish link.
1. Register HS (to be checked) to Regular BU.
2. Press [Talk] key of the HS to establish link.
2 Control signal confirmation
HS, BU Mode: [Test Burst Mode] (*1)
Check DSP interface. (*2) Check DSP interface. (*2)
3 X’tal Frequency confirmation (*7)
HS, BU Mode: [Adjustment] (*3)
Check X’tal Frequency.
(13.824000MHz ±100Hz) Check X’tal Frequency.
(13.824000MHz ±100Hz)
4 TX Power confirmation
Regular HS, BU Mode:
[RX-CW Mode.] (*4)
HS, BU (to be checked) Mode:
[Test Burst Mode.] (*1)
1. Place the Regular HS about 15cm away
from the BU.
2. Confirm that RSSI of the Regular HS is
approximately 2V by Oscilloscope. (*5)
1. Place the HS about 15cm away from the
Regular BU.
2. Confirm that RSSI of the Regular BU is
approximately 2V by Oscilloscope. (*6)
5 RX Sensitivity confirmation
Regular HS, BU Mode:
[Test Burst Mode.] (*1)
HS, BU (to be checked) Mode:
[RX-CW Mode.] (*4)
1. Place the Regular HS about 15cm away
from the BU.
2. Confirm that RSSI of the BU is
approximately 2V by Oscilloscope. (*5)
1. Place the HS about 15cm away from the
Regular BU.
2. Confirm that RSSI of the HS is
approximately 2V by Oscilloscope. (*6)
6 Range Confirmation Normal
HS, BU Mode: [Normal Mode]
1. Register Regular HS to BU (to be checked).
2. Press [Talk] key of the Regular HS to
establish link.
3. Compare the range of the BU (being
checked) with that of the Regular BU.
1. Register HS (to be checked) to Regular BU.
2. Press [Talk] key of the HS to establish link.
3. Compare the range of the HS (being
checked) with that of the Regular HS.
Note:
(*1)(*3)(*4) ADJUSTMENT AND TEST MODE (P.31)
(*2) RF-DSP Interface Signal Wave Form (P.28)
(*5) Base Unit Reference Drawing (P.40)
(*6) Handset Reference Drawing (P.41)
(*7) X501 (Base Unit), X201 (Handset) Check (P.39)
26
KX-TG2448BXF / KX-TG2448B XS / KX-TGA254BXF / KX-TGA254BXS