HP 3000 SERIES II System Service Manual page 112

System Service
4-73. SYSTEM CLOCK/CONSOLE INTERFACE PCA 30031-60001
The system clock/console interface PCA contains locations for 14 jumpers and one ten-position switch
that select operating parameters for the PCA. Physical locations of the jumper wires and switch are
shown in figure 4-16.
DEVICE NUMBER (DEVNOI.
JUMPER INSTALLED
=
LOGIC O.
ILLUSTRATION SHOWS
JUMPERS FOR DEVNO 351 8 ,
GG
C3J
:~
' " '".8
~m
rn0 00 mmo
8'
;00
0~ rn~]"
m0'"mm
~
00
0
~rn
8
2 IT]
rn rn rn
g
rn rn
o
0'.
0
0
0
' 0 >
m
rn
[iJ [!J ,
m
rn~'
o
0J!J
Grn02~rnm
mrn
o
o 0
IT]
rn rn
, ~:
[:J
rn rn
GROUP INTERRUPT
MASK. JUMPER
SHOWN IN "0" POSITION.
CLOCK FREQUENCY
DIVIDER INPUTS.
JUMPERS SHOWN FOR
NORMAL OPERATING
CONDITION (INTERNAL).
BAUD RATE
SELECTION SWITCH
CR COUNT RATE
INPUT. JUMPER SHOWN
IN "INTERNAL" POSITION.
CONSOLE INTERFACE
CLOCK INPUT.
JUMPER SHOWN IN
"INTERNAL" POSITION.
7522·38
Figure 4-16. System Clock/Console Interface PCA Jumper and Switch Locations
4-26