Agilent Technologies 4339B - Page 261

B
Handler
Interface Installation
This appendix
provides the
electrical
characteristics
of
the
handler
interface
signals
,
and
how
to
set
up
the
handler
interface
board.
Electrical
Characteristics
Output
Signals
Each
DC output
is
isolated
using
open
collector
output
opto-isolators
.
The
output
voltage
of
each line
is
enabled
by
putting
pull-up
resistors
on
the
main
board,
and
by
connecting
the
pull-up resistors
to an
externally
applied
DC
voltage
.
The electrical
circuits
of
the
DC
isolated
outputs
are
divided
into
two
groups
to
be
able
to
separate power
supplies
(refer
to
T
able
B-1
).
A simplied
diagrams
of
the
output
signals
is
shown
in
Figure
B-1
for
comparison
signals
and
Figure
B-2
for
control
signals
.
T
able
B-1.
Handler
Output
Electrical
Characteristics
Output
Signals
V
oltage
Output
Rating
Maximum
Current
External
V
oltage/Circuit
Common
Low High
Comparison
Signals
/HI
/IN
/LO
/NO
CONT
A
CT

0.5
V
5
to
24
V
6
mA
EXT
DCV1
COM1
Control
Signals
/ALARM
/INDEX
/EOM
/NOT READY

0.5
V
5
to
15 V
6
mA
EXT
DCV2
COM2
Note
The
pull-up resistors in Figure B-1 and Figure B-2 are
not mounted when 4339B
is shipped from the factory
. Before using the handler
interface, mount the
pull-up resistors
.
Handler Interface Installation B-1