HP 8340B Manual page 508

Table
E-l.
Motherboard Wiring List
Mnemonic
Q2B
Q2E
Q3B
Q3C
Q3E
Q4B
Q4C
Q4E
REN
RFSWP
RGND
RPNLSWP
RPNLSWP RTN
RSTAT
SIOA
SIOB
SPARE 1
SPARE 2
SRFBK
SRPWR
Description
TRANSISTOR Q2 BASE
TRANSISTOR Q2 EMITTER
TRANSISTOR Q3 BASE
TRANSISTOR Q3 COLLECTOR
TRANSISTOR Q3 EMMITER
TRANSISTOR 04 BASE
TRANSISTOR 04 COLLECTOR
TRANSISTOR 04 EMITTER
IEEE 488 REMOTE ENABLE
(REN)
SWEEP RAMP TO RF OUTPUT SECTION
REFERENCE GROUND
REAR PANEL SWEEP OUTPUT
REAR PANEL SWEEP GROUND RETURN
READ STATUS I/D STROBE (15, R3:)
I/O
STROBE
(FIRST
HALF
ADDRESSES)
I/O
STROBE
(SECOND
HALF
ADDRESSES)
DBO OUTPUT MISCELLANEOUS CONTROL
DB1 OUTPUT MISCELLANEOUS CONTROL
YO SENSE RESISTOR
FEEDBACK
YO SENSE RESISTOR POWER
Type
ANALOG
ANALOG
ANALOG
ANALOG
ANALOG
ANALOG
ANALOG
ANALOG
DIGITAL
ANALOG
GROUND
ANALOG
GROUND
DIGITAL
DIGITAL
DIGITAL
DIGITAL
DIGITAL
ANALOG
ANALOG
Levels
TTL
(LOW TRUE)
10V/SWEEP
0V
10V/SWEEP
0V
TTL
(LOW TRUE)
TTL (LOW TRUE)
TTL
(LOW TRUE)
TTL
TTL
-5
TO -17V
-5V
TO -17V
E-18
Motherboard Wiring
List
HP 8340B/41B