Board Connector Pin Assignment - Agilent Technologies 4284A Service Manual

4-4. BOAR D CONNECTOR PIN ASSIGNMENT
The pin assignments for each board are provided with the component locations using the
names listed in Table 4-1 .
Table 4-1 . Signal Name Used for Pin Assi g nments
Name
A D CLK
to
A 1 A 20
to
/ A CSO / A CS7
to
A NA 1 A NA 6
to
A N DO A ND7
/A N LDS
A NR/W
/A S
to
A 1 A 20
/BIA S
/CA R D_LDS
/CA R D_R/W
to
DO D 1 5
/DTA C
/EOC_IN T
F
/HA LT
/HA N DLER
/HDL_TRG INT
/ IDO
to
/ID7
/INT _FRlt-f_STD_IF
/INT _TO STD_IF
K ED I N T
/ K E Y _DSP CTL
/KEY _LOCK_INT
/LDS
/LGN D
LOC ()
90
LOC
/ M EM_CA RD
N ULL OUT
/POW'_FA I L
/Rl:"A R_TRG_I N T
/RESET
R/ Hl
/STD_IF
/SCA N N E R
A 1:"R_I
/SC N N N T
/UDS
/VMA
/ VPA
BF
+ 1 2 VFA N
- 1 2VFA N
+5 V M I:"M CA RD
Description
Clock signal for A-D converter
Address bus lines
Analog board (card) select signal
Address bus lines for the analog boards
Data bus line for controlling the analog boards
Analog Board Data Strobe Signal
Data Read/Write Signal
Address strobe signal
Address bus line
Bias current I/F access signal
Memory card lower data strobe
Memory card read/write signal
Data Bus Line for the digital boards
Data acknowledge sig nal
I nterrupt signal for A-D End Of Conversion
Test Frequency Signal
Halt signal
Handler interface access signal
Trigger interrupt signal from H andler I nterface
Board identification signal
I nterrupt from the H P-I B interface
I nterrupt to the H P-IB interface
Interrupt from the keyboard
Keyboard and display control signal
Keylock interrupt signal from Handler I nterface
Lower data strobe
Logic circuits g round line
Local (0 0 ) sig nal
Local (90 0 ) signal
Memory card access signal
Null detector output signal
LA
signal to the handler interface
/ A RM
Trigger interrupt signal from the external trigger connector
on the rear panel
Reset signal
Read/Write signal
H P- IB access signal
Scanner interface access signal
I nterrupt signal from the scanner interface
Upper data strobe
Valid memory access signal for CPU
Valid peripheral signal
8 x F ( test frequency ) signal
+ 1 2 V for the cooling fan
-1 2 V for the cooling fan
+5 V for the memory card
4-2