Kenwood TS-B2000 Service Manual Supplement page 64

TS-2000/X,TS-B2000
1200MHz Unit Transmitter Section
Item Condition
1. TX IF gain 1) Display f. : 1270.000MHz
Mode : CW
Carrier : 0
Transmit
2. MCF 1) Disconnect the cable from CN5.
(135.395MHz) Display f. : 135.395MHz
Spectrum analyzer setting
Center f. : 135.395MHz
Frequency span : 50kHz
XdB/DIV : 2dB
RBW : 1kHz
VBW : 1kHz
Transmit
Connect the cble to CN5.
• Perform the following in the adjustment mode. Item 3~6.
To terminate the adjustment menu in the middle, save your settings with Menu No. 124.
3. 1.2G 1) Menu No. : 109
power POC (Frequency : 1270.1MHz)
10W Transmit
5W 2) Menu No. : 110
Transmit
2.5W 3) Menu No. : 111
Transmit
1W 4) Menu No. : 112
Transmit
4. Band TGC 1) Menu No. : 113
1240MHz (Frequency : 1240.1MHz)
Mode : USB
Transmit
1270MHz 2) Menu No. : 114
(Frequency : 1270.1MHz)
Transmit
1299MHz 3) Menu No. : 115
(Frequency : 1299.9MHz)
Transmit
5. 1.2G 1) Menu No. : 116
power PGC (Frequency : 1270.1MHz)
2.5W Transmit
1W 2) Menu No. : 117
Transmit
6. 1.2G 1) Menu No. : 123
protection (Frequency : 1270.1MHz)
ANT : 50Ω dummy load
Set the adjustment value to 0.
Transmit
2) Menu No. : 123
(Frequency : 1270.1MHz)
ANT : Open
Set the adjustment value to 100.
Transmit
• Writing data : After items 3~6 have been adjusted;
1) Menu No. 124
2) [+] or [–] key : Push once time. Display "rEAdy" → "good" (If "nG" is displayed, enter data again.)
3) [CLR] key : Push once time.
64
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Spectrum Rear ANT1.2G TX-RX3
analyzer panel
Power meter
Tracking CN15
generator
Spectrum CN14
analyzer
Power meter Rear ANT1.2G Front
panel panel
DC V.M TX-RX1 CN27
(A/9) (12VSR)
Adjustment
Parts Method
Set the carrier level
at approx. 100mW.
L2 Power max.
L3
L9
L320 Adjust the coils to
L321 obtain the frequency
L5 response as shown.
[+] key Set the adjustment 10W±0.1W
or value within the
[–] key limit of the specified
power.
5W± 0.2W
2.5W± 0.1W
1W± 0.1W
10W±0.3W
2.5W± 0.1W
1W± 0.1W
Check the default 0.1 to 1.0V
voltage (Vo).
[+] key Set the adjustment Vo+(0.68 to 0.72V)
or value within the
[–] key limit of the specified
voltage.
Specifications/Remarks
Max. 3dB Max. 3dB
7.5kHz 7.5kHz