HP 8340b

Table
E-l.
Motherboard
Wiring
List
Mnemonic
WSPAT
WSPTM
WYOKW
WYTMCTL
WYTMSLP
W11R2
YO COIL
+
YO
COIL
-
YO TUNE
YOXISTB
Z-AXIS BLANK
1.4V/GHZ
20/30 SWP
500 KHZ REF
8410 TRIG
+1.0V/GHZ
+1.0V/GHZRTN
+5V
AC1
+5VAC2
+5V
SENSE
(+)
+5V
SENSE
(-)
+5V
UNPEG
+5.2V
Description
SWEEP ATTENUATOR
DATA STROBE
(1,
RO:)
SWEEP TIME
DAC
DATA
STROBE
(1,
R1)
YO KICK PULSE WIDTH
DATA STROBE
(5,
R1;;)
YTM CONTROL
SIGNALS
STROBE
(11,
R1:)
YTM DRIVE
SLOPE
DAC
DATA STROBE
(11,
R1:)
EXTRA
I/O
STROBE
(11.R2-)
POSITIVE
INPUT TO
YO
COIL
NEGATIVE
INPUT TO YO COIL
LOW FREQ
PHASE
LOCK
TO YO DRIVER
YO
DRIVE
TRANSISTOR BASE
2-AXIS
BLANKING/MARKER
1.4V
PER GHZ REFERENCE
20/30 MHZ
REFERENCE OSCILLATOR SWEEP
PLL2 500
KHZ REFERENCE
SYNCHRONIZING TRIGGER TO 841 OB INTERFACE
+1.0V/GHZ
FREQUENCY REFERENCE
+1.0V/GHZ
FREQUENCY
REFERENCE GROUND
RETURN
+5V
TRANSFORMER SECONDARY
+5V
TRANSFORMER SECONDARY
(GREEN)
+5.2
VOLT
SUPPLY
POSITIVE SENSE
+5.2
VOLT
SUPPLY POSITIVE
SENSE
UNREGULATED
SUPPLY
TO
+5V
REGULATED
+52
VOLT
SUPPLY
Type
DIGITAL
DIGITAL
DIGITAL
DIGITAL
DIGITAL
DIGITAL
ANALOG
POWER
SUPPLY
ANALOG
ANALOG
DIGITAL
ANALOG
ANALOG
DIGITAL
DIGITAL
ANALOG
GROUND
TlSEC.
TlSEC.
POWER SUPPLY
POWER
SUPPLY
POWER SUPPLY
POWER SUPPLY
Levels
TTL
(LOW TRUE)
TTL
(LOW
TRUE)
TTL
(LOW
TRUE)
TTL
(LOW TRUE)
TTL
(LOW
TRUE)
TTL
(LOW
TRUE)
-40V
TO
-20V
-40V
OVTO
±6V
-30V
TO
-39V
+5V/-5V
+14V/GHZ
OVTO
+10V
TTL
TTL
1.0V/GHZ
0V
7 VAC
7
VAC
+5
2V
0V
+7VTO +9V
+5.2V
E-22 Motherboard Wiring
List
HP 8340B/41B