
HP 8511A Test Set Operating and Service Manual
Table 6-6 Test Sets Interconnect Table (1 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
Active
AB0
AB1
AB2
Active LED Indicator
Address Bus Bit 0
Address Bus Bit 1
Address Bus Bit 2
XA4-3
XA4-29
XA4-8
XA4-30
M
o
th
er
boa
rd
P
in N
u
m
b
er
s
4
29
8
30
29
8
30
29
8
30
AB3
AB4
A1S11
A1S10
Address Bus Bit 3
Address Bus Bit 4
Attenuator 1 Section 1 In
Attenuator 1 Section 1 Out
XA4-9
XA4-31
XA5-4
XA5-26
9
31
2
13
A1S21
A1S20
A1S31
A1S30
Attenuator 1 Section 2 In
Attenuator 1 Section 2 Out
Attenuator 1 Section 3 In
Attenuator 1 Section 3 Out
XA5-24
XA5-3
XA5-23
XA5-2
9
3
5
11
A1S41
A1S40
A1S11
A1S10
Attenuator 1 Section 4 In
Attenuator 1 Section 4 Out
Attenuator 2 Section 1 In
Attenuator 2 Section 1 Out
XA5-25
XA5-1
XA5-44
XA5-22
10
4
2
13
A2S21
A2S20
A2S31
A2S30
Attenuator 2 Section 2 In
Attenuator 2 Section 2 Out
Attenuator 2 Section 3 In
Attenuator 2 Section 3 Out
XA5-18
XA5-42
XA5-40
XA5-20
9
3
5
11
A2S41
A2S40
BNMINT
BSRQ
Attenuator 2 Section 4 In
Attenuator 2 Section 4 Out
Buffered Non-Maskable Interrupt
Buffered Service Request
XA5-19
XA5-41
XA4-28
XA4-2
28
4
28
2
28
10
4
DB0
DB1
DB2
DB3
Data Bus Bit 0
Data Bus Bit 1
Data Bus Bit 2
Data Bus Bit 3
XA4-15
XA4-37
XA4-16
XA4-38
15
37
16
38
15
37
16
38
15
37
16
38
DB4
DB5
DB6
DB7
Data Bus Bit 4
Data Bus Bit 5
Data Bus Bit 6
Data Bus Bit 7
XA4-17
XA4-39
XA4-18
XA4-40
39
17
39
18
40
17
18
40
GND
LAP1
LAP2
LATDRVP
Chassis Ground
Low = Port 1 Attenuator Present
Low = Port 2 Attenuator Present
Low = Attenuator Switch/Driver
Present
XA15-18-23, 40-44
J8-1
J9-1
XA5-43
3, 5
11, 12, 33, 34
11, 12, 33, 34
19
41
44
11, 12, 33, 34
11, 12, 33, 34
21
2
2
2
2
3, 4
14
14