KX-TG2560B, KX-TG2560S - Panasonic Telephone Service Manual (repair manual). Page 29

29

Rx Test  : Mode Select
RF Gen  ON/OFF  : RF Output on
FREQ.  : Input Rx Frequency=
              656.160MHz=2406.16MHz

      -1750MHz (1ch)

LEVEL  : Input RF Level=(-25dBm)+

      (Jig Loss / CN1 

→

 CN2 

→

 CN3

        

→

 CN4)

Mod Gen  ON/OFF  : FM on
FREQ.  : Input "1.0kHz"
LEVEL  : Input FM Level "24.0kHz dev."
AF Filter  0.3 to 3.4kHz  : Select AF Filter
SS Mode of handset: ON
(Follow the above-mentioned procedure
(8).)
Install 150

Ω

 resistor (150

Ω

=SP load) or

remove the SP wires. It can be
remedied either one, but not both at
the same time.

SETUP X1 probe connected to INPUT 1.
Probe ground connected to GND.
TIME/DIV 1ms
VOLT/DIV 1V
Auto trigger

On Marconi, press SINAD until the display

      shows the SINAD value and press dB. Then press
      "Rx Test", "RF Gen", and "Level" on Marconi. Lower
      Amplitude LEVEL at SINAD 12 dB and confirm that
      Amplitude is less than -100 dBm+(Jig Loss / CN1 

→

CN2 

→

 CN3 

→

 CN4). Attach the

      oscilloscope probe to TP-SQL. When Amplitude is
      set at -95 dBm +(Jig Loss / CN1 

→

 CN2 

→

 CN3 

→

CN4), confirm that the signal of TP-SQL is Low. After
that, set Amplitude at -120 dBm +(Jig Loss / CN1 

→

CN2 

→

 CN3 

→

 CN4), and confirm that the signal of

TP-SQL is High.
When level is NG, adjust VR501 following Squelch
Check item 5 of Base Unit RF (Refer to page 12).

(D)

Squelch

(RX sensitivity confirmation

and squelch adjustment)

Adjust VR301 to make the voltage of TP-RSSI
2.00V ± 0.03V.

Rx Test  : Mode Select
RF Gen  ON/OFF  : RF Output on
FREQ.  : Input Rx Frequency=
              656.160MHz=2406.16MHz

      -1750MHz (CH1)

LEVEL  : Input RF Level=(-25dBm)+

      (Jig Loss / CN1 

→

 CN2 

→

 CN3

        

→

 CN4)

Mod Gen  ON/OFF  : FM on
FREQ.  : Input "1.0kHz"
LEVEL  : Input FM Level "24.0kHz dev."
AF Filter  0.3 to 3.4kHz  : Select AF Filter
SS Mode of handset: ON
(Follow the above-mentioned procedure
(8).)

(C)

RSSI Level Adjustment

ADJUSTMENT ITEM

DESCRIPTION

EQUIPMENT

PROCEDURE

(Rx Test)

(Rx Test)

(E)

MIC Input

(MIC Modulation)

(Tx Test)

Tx Test  : Tx Test Mode Select
Tx Freq. : 904.560MHz
Audio Gen  Gen1/Gen2  : Select

          Gen1 (AF1)

ON/OFF  : AF Gen1 "ON"
FREQ.  : Input "1.0kHz"
LEVEL  : Input "-34dBm"
Mod Meter  IF Filter  300kHz  Return  :

           Select IF Filter

AF Filter  0.3 to 3.4kHz  : Select AF Filter
SS Mode of handset: OFF
(Follow above mentioned procedure (8).)
Out put Power off handset:High
(Follow the procedure (9).)
TP Tx ANALOG pull up.
The capacitor used must be greater than
1

µ

F (c

•†

µ

F).

Connect Audio Cable positive lead to TX
AF, negative lead to GND, BNC end to
AF GEN OUTPUT.

Adjust VR201 until Marconi MOD LEVEL equals