
HP 8511A Test Set Operating and Service Manual
Table 6-6 Test Sets Interconnect Table (2 of 2)
Signal Enters
(Assembly)
→
A1 Front
Panel
A2 IF
Multiplexer
A3 VTO
Summing
Amp
A4 GPIB
A5
Attenuator/
Switch
A10
Sampler
A11
Sampler
A12
Sampler
A13
Sampler
A14 VTO/
Driver
A15
Regulator
A16 Step
Attenuator 1
A17 Step
Attenuator 2
A20 Rear
Panel
Mnemonic
Description
Signal Enters
Motherboard
(Connector/Pin)
Signal Exits
Motherboard
(Connector)
→
J1
XA2
XA3
XA4
XA5
J2
J4
J5
J6
J3
XA15
J8
J9
J7
LBIOS
LBUFWR
LENDRA
LOPTP
Low = Buffered !/O Strobe
Low = buffered Write
Low = End of Range
Low = Option Present
XA4-5
XA4-27
XA3-43
XA2-20
M
o
th
er
boa
rd
P
in N
u
m
b
er
s
5
20
5
27
5
2
LPRTHLD
LP2ACT
LSWDRVP
LTEMP
Low = Preturn Hold
Low = Port 2 Active
Low = Sweep Driver Present
Low = Over Temperature
J11-17
XA4-4
XA3-21
XA3-7
6
7
7
43
7
3
PWON
P1ACT
P1BIASIN
P1BIASOUT
Power On
Port 1 Active
Port 1 Bias Voltage In
Port 1 Bias Voltage Out
XA4-6
XA4-26
J8 (Rear Panel)
Port 1 (Front Panel)
19, 20
17, 18
6
6
6
1
P2BIASIN
P2BIASOUT
SWEPTBIAS
SBA1
Port 2 Bias Voltage In
Port 2 Bias Voltage Out
Swept Bias
A1 Sampler On/Off
J6 (Rear Panel)
Port 2 (Front Panel)
XA3-24
XA3-4
15, 16
13, 14
1
1
5
1
SBA2
SBB1
SBB2
TEMP2
A2 Sampler On/Off
B1 Sampler On/Off
B2 Sampler On/Off
Analog Temperature Sensor
XA3-26
XA3-3
XA3-25
XA3-1
5
1
VSET
+5VA
+5VCAP
-5VCAP
VTO Set Voltage
+5 Volts to Attenuators
+5 Volts Unregulated to Input Filter Capacitor
−
5 Volts Unregulated to Input Filter Capacitor
XA3-2
XA15-17, 39
XA15-45
XA15-8, 9, 30, 31
13, 14
26, 27
8, 9, 30, 31
6
6
+15VCAP
-15VCAP
+5VREG
-5VREG
+15 Volts Unregulated to Input Filter Capacitor
−1
5 Volts Unregulated to Input Filter Capacitor
+ 5 Volts Regulated Supply
−1
5 Volts Regulated Supply
XA15-12, 13, 34, 35
XA15-16, 17, 38, 39
XA15-2, 3, 24, 25
XA15-6, 7, 28, 29
1, 2
14, 36
14, 36
14, 36
9, 10
7, 8
12, 13, 34
16, 17, 38, 39
+15VREG
-15VREG
+15 Volts Regulated Supply
−1
5 Volts Regulated Supply
XA15-10, 11, 32, 33
XA15-14, 15, 36, 37
7, 8
10, 32
13, 35
10, 32
13, 35
10, 32
13, 35
10, 32
13, 35
4
3
4
3
4
3
4
3
11, 12
5, 6