Nautel NX15, Troubleshooting Manual

Page: 227 / 274

Issue 5.0 2016-05-06 SD-5
Figure SD-5: RF Power Stage, RF Output Filter (Sheet 2 of 2)
L7
*
L8
* * * *
L9
P27 J3
L1
10
C26
35V
0.1
C24
J3 P27
-15V
* * *
C16
* * * *
C21
* *
C26
*
*
*
L2
10
C23
35V
1
T1
1
0.1
C21
2 5 6
A43
7 8
J1
J2
KEY
J1
8
9
S1:8
STAGE
FROM
+15V
T1
PROBE
50pF
C1
L10
*
C33
C32
C31
1.0
C25
0.1
C13
0.1
C17
562
R14
0.5W
R11
470
R18
1500
DIRECTIONAL
0.1
C15
DIRECTIONAL
C1
50pF
SAMPLE
REFLECTED POWER
FORWARD POWER
E1
SPARKGAP
TO
GROUND
CONTROLLED
SWITCH
EXCITER
J1 P23
*
C15 C13 C14
*
C20 C18 C19
A41
C1
9100pF
*
C23 C24
J1 P24
C25 C27 C30 C29
CAPACITOR BANK 3
1.0
C22
2
2W
R3
47
2W
R4
47
R1
47
2W
R2
47
2W
R13
1500
0.5W
R16
470
3 4
2W
R5
100
2W
R6
220
0.5W
R7
330
COUPLER
0.5W
R8
680
0.1
C19
C20
0.1
2W
R20
47
9100pF
C1
0.5W
R10
2200
PWB
COUPLER
A43A1
9100pF
C3
9100pF
C4
3
9100pF
C5
SAMPLE
DRAIN
A44
(OPTIONAL)
U8
1
16
S1:1
6
11
S1:6
4
13
S1:4
3
14
S1:3
5
12
S1:5
2W
R15
47
C16
0.1
S2070236 V3
RF CURRENT PROBE
(SAME AS ABOVE)
RF TRANSFORMER
(SAME AS ABOVE)
PART OF A2
RF TRANSFORMER
(SAME AS ABOVE)
PART OF A3
RF TRANSFORMER
RF TRANSFORMERS ARE PART OF BACKPLANE ASSEMBLIES A1
THROUGH A5 AND ARE SHOWN HERE FOR REFERENCE ONLY.
(SAME AS ABOVE)
PART OF A4
RF TRANSFORMER
FOR CAPACITOR VALUES)
(REFER TO CUSTOMER CONFIGURATION SHEET
CAPACITOR BANK 1
PART OF A5
RF TRANSFORMER
VOLTAGE
2
SURGE
ARRESTOR
CAPACITOR BANK 2
RF VOLTAGE SAMPLE
8
REFLECTED POWER SAMPLE
1
STATIC
STAGE
TO SHEET ?
RF OUT
TO ANTENNA
A42
PART OF A1
* DENOTES FREQUENCY DEPENDENT COMPONENTS
(SAME AS ABOVE)
C17 C22
C2
0.015
6
0.5W
10
R17
5000V
C28
RF CURRENT SAMPLE
C14
0.1
C18
0.1
7
4
5
2
1
7
U2:A
FORWARD POWER SAMPLE
0.5W
R9
1000
9100pF
C2
EXCITER
STN GND
0.5W
10
R12
2
15
S1:2
7
10
S1:7
2
1
7
U1:A
4 V+
5
COMP
6
V-
3
SHUTDOWN
LT1210CT7
U1:B
4
V+
5 COMP
6
V-
3
SHUTDOWN
LT1210CT7
U2:B