HP 8340b - Page 504

Table
E-l.
Motherboard Wiring
List
Mnemonic
(.RETRACE
LRSP
LSBY
LSPLD
LSSP
LSRQ
LSTEPUP
LSTP
LUNLVL
LVLCOR
LVLREF
LVSX
LYOKICK
LYSP
MKR RMP
MOD RTN
MODHI
MODLO
MODLVL
MUTE
M1
M2
M3
M4
M5
Description
RETRACE
RESET SWEEP CONTROL
STANDBY CONTROL
SWEEP
LED
CONTROL
OFF/ON
STEP
SWEEP
SERVICE REQUEST
STEP UP FOR EXTERNAL FOOT SWITCH
PROCESSOR STOPPED
INSTRUMENT
UNLEVELED
LEVELING
CORRECTION
A.L.C,
LEVEL REFERENCE
DISABLE YO SWEEPS
YO SWEEP
SWEEP
RAMP
TO
MARKER
BANDCROSS BOARD
ALC
MODULATORS GROUND
RETURN
HIGH BAND MODULATOR DRIVE
LOW
BAND MODULATOR DRIVE
MODULATOR
LEVEL
PLOTTER MUTE CONTROL
M NUMBER TO
M/N
OSCILLATOR BIT 1
M
NUMBER TO
M/N
OSCILLATOR
BIT 2
M
NUMBER TO
M/N
OSCILLATOR
BIT 3
M NUMBER TO
M/N
OSCILLATOR BIT
4
M NUMBER TO
M/N
OSCILLATOR BIT
5
Type
DIGITAL
DIGITAL
DIGITAL
DIGITAL
DIG.
OPEN
COLL..
DIG.
OPEN
COLL.
DIGITAL
DIGITAL
DIG OPEN
COLL.
ANALOG
ANALOG
DIGITAL
DIGITAL
ANALOG
GROUND
ANALOG
ANALOG
ANALOG
DIGITAL
DIGITAL
DIGITAL
DIGITAL
DIGITAL
DIGITAL
Levels
TTL
(LOW
TRUE)
TTL
(LOW
TRUE)
0V
TO
+22V
TTL
TTL
(LOW
TRUE)
TTL
(LOW
TRUE)
TTL
(LOW
TRUE)
TTL (LOW TRUE)
TTL
(LOW TRUE)
125dB/VOV=OdB
.2V/dB
OV=OdBm
TTL
(LOW
TRUE)
TTL (LOW TRUE)
0 TO
10V/SWEEP
0V
CURRENT SOURCE
CURRENT
SOURCE
0 TO
-3
LEVELED
TTL
(HIGH TRUE)
TTL
(HIGH
TRUE)
TTL
(HIGH
TRUE)
TTL (HIGH TRUE)
TTL
(HIGH TRUE)
TTL
(HIGH TRUE)
E-14
Motherboard
Wiring
List
HP
8340B/41B