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Table
1.1
-
1994
Specifications (Cont*d)
EXTERNAL ARMING
Applicability:
Input
Signal:
Sensitivity
Offset
Arming Mode:
All
functions,
except
phase,
can be
armed
by
rear-panel
input
with
modes
selected
by
front-panel
entered
special function
500
mV
p-p
+4
to
-4V
(potentiometer
adjusted)
1.
Start-Off
Stop-Off
SF10
(Default)
2.
Start--/"
Stop-Off
SF11
3.
Start-~\_
Stop Off
SF12
4.
Start--/"
Stop-
J~
SF15
5.
Start-^u
Stop-
_f
SF17
6.
Start-_7"
Stop-
~\_
SF16
7.
Start-"\_
Stop-
"V-
SF18
Note:
"Off" state indicates the counter's
self
-arm
start/stop
is
used.
Minimum
Start-Stop
Arm
Period:
100
ns
GATE
OUT
A
TTL-compatible
signal
(into 1
kilohm)
is
provided
from
a rear-panel
BNC
connector coincident
with the
measurement
gate.
The
signal level
is
low
while the
gate
is
open
NON-VOLATILE
MEMORY
Up
to
ten
complete
front-panel
settings (including
math
function
stores)
may
be
retained
for
subsequent
recall
GPLB
INTERFACE
Standard:
IEEE-STD-488-1
978
Programmable
Controls:
All
front-panel
keyboard
controls
except
power
on/off
and standby
IEEE-488
Subsets:
SHI,
AH1,
T5,
TEO
(none), L4.
LEO
(none),
SRI, RL1,
PPO
(none),
DC1, DTI,
CO
(none),
and E2
(3-state
bus
drivers)
1-14
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