Read Panasonic KX-TG2560B / KX-TG2560S Service Manual online
24
KX-TG2560B/KX-TG2560S
(D)
Squelch
(RX sensitivity confirmation
and squelch adjustment)
Marconi
indicates the button of Marconi
Rx Test : Select Rx Test Mode
RF Gen , ON/OFF : RF Output on
FREQ. : 904.560MHz
LEVEL : -30dBm + (Jig Loss CN1
Rx Test : Select Rx Test Mode
RF Gen , ON/OFF : RF Output on
FREQ. : 904.560MHz
LEVEL : -30dBm + (Jig Loss CN1
→
CN2)
Mod Gen ON/OFF : FM on
FREQ. : 1.0kHz
LEVEL : 24kHz
AF Filter , 0.3 to 3.4kHz : Select AF
Filter
SS Mode of base unit: ON
(Follow the procedure (5).)
One end of BNC cable to left RF
connector, other end to Attenuator
Input. Audio Cable positive lead to TPT
isolation capacitor, negative lead to
TPR isolation capacitor, BNC end to AF
INPUT connector.
Mod Gen ON/OFF : FM on
FREQ. : 1.0kHz
LEVEL : 24kHz
AF Filter , 0.3 to 3.4kHz : Select AF
Filter
SS Mode of base unit: ON
(Follow the procedure (5).)
One end of BNC cable to left RF
connector, other end to Attenuator
Input. Audio Cable positive lead to TPT
isolation capacitor, negative lead to
TPR isolation capacitor, BNC end to AF
INPUT connector.
Oscilloscope
SETUP X1 probe connected to INPUT
1. Probe ground connected to GND.
TIME/DIV 1ms
VOLT/DIV 1V
Auto trigger
1. Probe ground connected to GND.
TIME/DIV 1ms
VOLT/DIV 1V
Auto trigger
Telephone Analyzer
Corded Phone
Take off hook
On Marconi, press "Rx Test" and "SINAD" until the
display shows the SINAD value and press dB. Then
press "Rx Test", "RF Gen" and "Level" on Marconi.
Lower Amplitude at SINAD 12 dB and confirm that RF
GEN LEVEL is less than
[-105dBm + jig-loss CN1
display shows the SINAD value and press dB. Then
press "Rx Test", "RF Gen" and "Level" on Marconi.
Lower Amplitude at SINAD 12 dB and confirm that RF
GEN LEVEL is less than
[-105dBm + jig-loss CN1
→
CN2].
Attach the oscilloscope probe to TP SQL. When
Amplitude is set at .-95dBm+(Jig Loss CN1
Amplitude is set at .-95dBm+(Jig Loss CN1
→
CN2),
confirm that the signal of TP-SQL is Low. After
that, set Amplitude -120dBm+(Jig Loss CN1
that, set Amplitude -120dBm+(Jig Loss CN1
→
CN2),
and confirm that the signal of TP-SQL is High.
When level is NG, adjust again following Squelch Check.
(Refer to page 12.)
When level is NG, adjust again following Squelch Check.
(Refer to page 12.)
(Rx Test)
Marconi
indicates the button of Marconi
Rx Test : Select Rx Test Mode
RF Gen , ON/OFF : RF Output on
FREQ. : 904.560MHz
LEVEL : -30dBm + (Jig Loss CN1
Rx Test : Select Rx Test Mode
RF Gen , ON/OFF : RF Output on
FREQ. : 904.560MHz
LEVEL : -30dBm + (Jig Loss CN1
→
CN2)
Mod Gen ON/OFF : FM on
FREQ. : 1.0kHz
LEVEL : 24kHz
AF Filter , 0.3 to 3.4kHz : Select AF
Filter
SS Mode of base unit: ON
(Follow the procedure (5).)
Mod Gen ON/OFF : FM on
FREQ. : 1.0kHz
LEVEL : 24kHz
AF Filter , 0.3 to 3.4kHz : Select AF
Filter
SS Mode of base unit: ON
(Follow the procedure (5).)
(E)
RSSI Level Adjustment
Adjust VR800 so that the Voltage of TP RSSI becomes
2.3V ± 0.03V. (Refer to page 12.)
2.3V ± 0.03V. (Refer to page 12.)
(Rx Test)
Once aligned, please reassemble the base unit. Also take off the back of the HANDSET and unsolder the MIC lead short wire if
you previously installed it.
you previously installed it.
ADJUSTMENT ITEM
DESCRIPTION
EQUIPMENT
PROCEDURE
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