HP 8340B Manual page 233

Table
E-l.
Motherboard Wiring List
Mnemonic
WSPAT
WSPTM
WYOKW
WYTMCTL
WYTMSLP
W11R2
YO COIL
+
YO COIL
-
YO TUNE
YOXISTB
Z-AXIS BLANK
14V/GHZ
20/30 SWP
500 KHZ REF
8410 TRIG
+1
OV/GHZ
+10V/GHZRTN
+5VAC1
+5V ACS
+
5V SENSE
(+)
+5V SENSE
(-)
4-5V
UNPEG
+5 2V
Description
SWEEP ATTENUATOR DATA STROBE (1, RO
)
SWEEP TIME DAG 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 8410B INTERFACE
+1
OV/GHZ
FREQUENCY REFERENCE
+1
OV/GHZ
FREQUENCY REFERENCE GROUND RETURN
+5V TRANSFORMER SECONDARY
+5V
TRANSFORMER SECONDARY (GREEN)
+5,2
VOLT SUPPLY POSITIVE SENSE
+52
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
Tl SEC
Tl SEC
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
+1.4V/GHZ
OVTO
+10V
TTL
TTL
1
OV/GHZ
0V
7 VAC
7 VAC
+5 2V
0V
+7VTO +9V
+5 2V
E-22
Motherboard Wiring List
Change
5
HP 8340B/41B