ifi T251-500A, Инструкция по эксплуатации и техническому обслуживанию

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A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
FWD _PWR
REV_PWR
-2.5V
+2.5v
-2.5V +2.5v
+ 5v
+ 5v
-12V
+12V +2.5V
+ 5v
-12V -2.5V
+12V
-12v
+5v
+5V
Size
Scale
CAGE Code
DWG NO
R e v
Sheet
o f
A
INSTRUMENTS FOR INDUSTRY
500466-4
Wednesday, February 16, 2005 1 1
C
RONKONKOMA, NY
POWER/VSWR METERING BD W/FOLDBACK
01105
REV. DET.
IN
FWD. DET.
IN
NOTES:
1. * INDICATES OPTIONAL
COMPONENT.
J1
J2
VS WR
TRIP
ADJ.
2. UNLESS OTHERWISE
SPECIFIED:
ALL RESISTORS ARE 1/4 W,
+/-5%
GRACEFUL DEGRADATION PIN ATTENUATOR CONTROL
(NEGATIVE VOLTA GE)
(NEGATIVE VOLTA GE)
STAGE GA IN=5
[R2 NOT USED]
STAGE GA IN=5
[R15 NOT USED]
APPROX 2.5V
APPROX 0.5V
FOR FULL SCALE
APPROX 0.5V
FOR FULL SCALE
GAIN ADJ.
GAIN ADJ.
R5 2K
R38 120
J3
CON14A
1 2
3 4
5 6
7 8
9 10
11 12
13 14
R18
1
R37
2K
C21
1UF
R12
2K
C11
0.1uF
+
C23
6.8UF, 25V
R13
470
U10
LM137/TO39
VIN
3
ADJ
1
VOUT
2
C2
1uF
R6 2K
TP6
+
-
U6
INA321
.
1
.
2
.
3
.
4
.
5
.
6
.
7
.
8
R39 120
C18
1UF
R8
2K
C4
0.1uF
R22 1K
C22
1UF
+
C17
100, 16VuF
R26
2K
C13
0.1uF
R31
510
R21
2K
R16
1K
R27
2K
C9
0.1uF
R17
100K
R10
2K
R35
1K
R14
100K
C8
1uF
R3
100K
C15
1UF
C1
1uF
R40
120
R4
1
TP2
+
C16
6.8, 25VuF C25
1UF
C7
1uF
-
+
U3
INA321
.
1
.
3
.
2
.
4
.
5
.
6
.
7
.
8
R23
470
R25
5K
TP3 TP4
R15
S AT
R19
4.7K
C5
0.1uF
R36
5.1k
R9
2K
R20 2K
TP5
R32
100K
C10
0.1uF
R34 2K
R7 1K
-
+
U1
INA321
.
1
.
3
.
2
.
4
.
5
.
6
.
7
.
8
+
C19
6.8UF, 25V
R41
120
C3
0.1uF
U9
MC78M05C/TO
IN
1
OUT
2
GND
3
+
-
U5A
LM193H
3
2
1
8
4
U8
LM117/TO39
VIN
1
ADJ
2
VOUT
3
R28
470
U7
PS8701
1
2
4
3
5
R29
2K
C6
0.1uF
TP1
+
-
U4
INA321
.
1
.
2
.
3
.
4
.
5
.
6
.
7
.
8
R1
100K
+
-
U2
INA321
.
1
.
2
.
3
.
4
.
5
.
6
.
7
.
8
R2
S AT
R33
100K