TS-440S
ADJUSTM ENT
• TX ADJUSTMENT
Measurement
Adjustment
Item
Condition
Test
Specification/Remarks
equipment
Unit
Terminal Unit
Part
Method
1 .
TX AMPM
1 ) FREQ: 1 4. 1 750 M H z
O RV
RF
V R 5
MAX
M O D E : CW
Oscilloscope
RF
T 1 3,
CAR LEVEL contro l : MAX
1 6, 1 7
R F unit VR 4: C E N ER
Disconnect ORV connector from R F
unit . Then, connect as shown rig ht.
OSCI LLO
STBY : S EN D
SCO P E
2 ) Reconnect this connector after
( l / 4 W )
adjustment .
2 . Base C u rrent
1 ) FREQ: 1 4. 1 750 M H z
M O D E : U S B
A mmeter
Final
VR 1
C u rrent drain
First adjust VR 1 and VR2 for
M I C L EV E i contro l : M I N
(Minimum cu rrent)
minimum .
CAR LEVEL contro l : M I N
+ 200 mA
Adjust VR 1 for a n increase of
F I NAL unit VR 1 , V R 2 : M I N
200 m A when switched t o
Connect Ammeter
TX .
8J
: EXT Power supply
Then adjust V R 2 for 200 mA
8 :
Power connector
over this reading .
Adjust to minimum current with VR 1
V R 2
Cu rrent drain
and VR2 in the Final unit.
(Minimum current)
STBY : S E N D
+ D river current
(200 mA) + 200 mA
3 . 1 )
ALC
1 ) FREQ: 1 4. 1 750 M H z
P o w e r meter
Rear panel
A N T
Filter
VR 1
95
w
Caution: In no case should
(RF Output MODE: CW
the power be adjusted for
power)
CAR LEVEL contro l : ALC scale MAX
greater than 1 1 0 watts.
STBY : S E N D
2 ) Power
2) M ETER SW: PWR
V R 6
S e t to P W R meter
meter
STBY : S E N D
g 5 W reading
4. Power down
1 ) FREQ: 29. 7000M Hz
Power meter
Filter
V R 3
50
w
± 2 . 5
w
M O D E : CW
CAR LEVEL control: ALC scale MAX
Connect ACC socket pin (PD) to
50 W from N C .
STBY : SEND
2) Reconnect this connector (PD )
to NC after adjustment.
5 . Protection
1 ) FREQ: 1 4. 2000MHz
1 50!l RF
Rear panel
ANT
Filter
V R 2
30W
M O D E : CW
dummy load
Coax. cable to 1 50!1 dummy load
Power
r-
- - - - - -
-
-
.,....__ - . ,
should be 1 m long.
I
l m
l m
I
STBY : S E N D
I
�
I
I
I
L
-
- - - - - - - - - - - _ J
2 ) ANT: OPEN
1 8A o r less
6 . ALC meter
1 ) F R E Q : 1 4. 2000 M H z
P o w e r meter
Rear panel
A N T
Filter
VR4
Set to S meter "O"
* If this adjustment is per-
M
O D E : U S B
formed, step 2 ) Base current
MIC LEVEL contro l : M I N
must a l s o b e performed .
CAR LEVEL contro l : M I N
M ETER SW: ALC
STBY : S E N D
2 ) Connect the AG to MIC J ack.
Power meter
VR4
Set to ALC meter
AG : 1 kHz, 5 mV
AG
Filter
starting point.
STBY: S EN D
A F VM
3) AG : 6 d B increase level
V R 5
Adjust f o r maximum
(1 kHz, 10 mV )
ALC scale reading
�
7. Spurious
FREQ: 2 1 . 2000 M H z
Power meter
RF
VR4
- 40 dB or less.
M O D E SW: CW
S pectrum
M I N
C A R LEVEL control: ALC scale MAX
analyzer
STBY : S E N D
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