HP 8340B Manual page 229

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 Q4 BASE
TRANSISTOR Q4 COLLECTOR
TRANSISTOR Q4 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)
lOV/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
Change
5
HP 8340B/41B