Panasonic KX-TG1107UAJ / KX-TG1107UAM / KX-TGA110UAJ / KX-TGA110UAM Service Manual ▷ View online
11 RF SPECIFICATION
11.1. Base Unit
Item
Value
Refer to -. *
TX Power
More than 20 dBm ~ 25 dBm
Check Point (Base Unit) (H)
Modulation
340 kHz/div ~ 402 kHz/div
Check Point (Base Unit) (I)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Base Unit) (J)
RX Sensitivity
< 1000 ppm
Check Point (Base Unit) (K)
Timing Accuracy
< ± 2.0 ppm
Check Point (Base Unit) (L)
RSSI Level
34 hex ± F hex
Check Point (Base Unit) (M)
*: Refer to Check Point (Base Unit) (P.22)
11.2. Handset
Item
Value
Refer to -. **
TX Power
More than 20 dBm ~ 25 dBm
Check Point (Handset) (I)
Modulation
340 kHz/div ~ 402 kHz/div
Check Point (Handset) (J)
Frequency Offset
-50 kHz ~ +50 kHz
Check Point (Handset) (K)
RX Sensitivity
< 1000 ppm
Check Point (Handset) (L)
Timing Accuracy
< ± 2.0 ppm
Check Point (Handset) (M)
RSSI Level
34 hex ± F hex
Check Point (Handset) (N)
**: Refer to Check Point (Handset) (P.30)
12 HOW TO CHECK THE HANDSET SPEAKER
1. Prepare the digital voltmeter, and set the selector knob to ohm meter.
2. Put the probes at the speaker terminals as shown below.
37
KX-TG1107UAJ / KX-TG1107U AM / KX-TGA110UAJ / KX-TGA110UAM
13 FREQUENCY TABLE (MHz)
BASE UNIT
HANDSET
Channel No
Transmit Frequency
Receive Frequency
Transmit Frequency
Receive Frequency
1
1897.344
1897.344
1897.344
1897.344
2
1895.616
1895.616
1895.616
1895.616
3
1893.888
1893.888
1893.888
1893.888
4
1892.160
1892.160
1892.160
1892.160
5
1890.432
1890.432
1890.432
1890.432
6
1888.704
1888.704
1888.704
1888.704
7
1886.976
1886.976
1886.976
1886.976
8
1885.248
1885.248
1885.248
1885.248
9
1883.520
1883.520
1883.520
1883.520
10
1881.792
1881.792
1881.792
1881.792
Note:
Channel No. 10: In the Test Mode on Base Unit and Handset.
38
KX-TG1107UAJ / KX-TG1107U AM / KX-TGA110UAJ / KX-TGA110UAM
14 BLOCK DIAGRAM (BASE UNIT)
KX-TG1107 BLOCK DIAGRAM (BASE UNIT)
Audio
Hook
Switch
Switch
Bridge
Rect
Rect
A/D
D/A
Analog
Front End
Front End
CPU
BBIC
HOOK
RXAF
TXAF
DSP
BMC
Speech Encoding
Speech Decoding
RF
Interface
Interface
Burst Building
Burst Decoding
ADPCM
Codec Filter
Codec Filter
EEPROM
IC1
SDA
SCL
SYRI
RSSI
SYEN
RXDA
TXDA
J2
J1
IC2
IC3
4.0V
Reg.
Reg.
2.65V
Reg.
Reg.
4.0V
2.65V
VUNREG
40
41
28
24
24
61
9
5
5
30
11
11
63
64
64
6
5
6
4
RF Module
19
5
12
12
10
31
Limit
Resistor
Resistor
CHARGE
CONTACT
CONTACT
18
16
XTAL
10.368
MHz
MHz
DTXAF
DTXAF
27
26
BBIC
Interface
Interface
ANT1
ANT2
ANT2
to Tel_Line
A
B
A
B
to AC Adaptor
KX
-T
G110
7UAJ
/
K
X
-T
G
1107U
AM
/
K
X
-T
G
A110U
AJ
/
K
X
-T
G
A1
10UAM
10UAM
39
15 CIRCUIT OPERATION (BASE UNIT)
15.1. Outline
Base Unit consists of the following ICs as shown in BLOCK DIAGRAM (BASE UNIT) (P.39).
•
DECT BBIC (Base Band IC): IC2
−
Handling all the audio, signal and data processing needed in a DECT base unit
−
Controlling the DECT specific physical layer and radio section (Burst Module Controller section)
−
ADPCM codec filter for speech encoding and speech decoding (DSP section)
−
Echo-cancellation and Echo-suppression (DSP section)
−
Any tones (tone, sidetone, ringing tone, etc.) generation (DSP section)
−
DTMF receiver (DSP section)
−
Clock Generation for RF Module
−
ADC, DAC, timer, and power control circuitry
−
All interfaces (ex: RF module, EEPROM, LED, Analog Front End, etc.)
•
RF Module: IC3
−
PLL Oscillator
−
Detector
−
Compress/Expander
−
First/Second Mixer
−
Amplifier for transmission and reception
•
EEPROM: IC1
−
Temporary operating parameters (for RF, etc.)
•
Additionally,
−
Power Supply Circuit (+4.0V, +2.65V output)
−
Crystal Circuit (10.368MHz)
−
Charge Circuit
−
Telephone Line Interface Circuit
40
KX-TG1107UAJ / KX-TG1107U AM / KX-TGA110UAJ / KX-TGA110UAM
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