Chapter 4 DESCRIPTION OF FRONT AND REAR PANEL ITEMS
4-12
4.1.4 Cutoff Currents
Caution
• Test time and pause period are limited by setting upper cutoff current.
"ON
…
" of the front panel character shows a maximum test time and
"OFF
…
" shows a minimum pause period. For details, refer to
chapter 9 "Specifications" (Pages 9-2, 9-3, 9-9 , 9-10 and 9-11).
12
Keys
The
keys
12
are for increment/decrement of cutoff currents (reference currents for pass/
fail judgement). The keys are enabled when the Tester is in the READY status (status that the
READY
message
28
appears) and the
KEYLOCK
message
33
has disappeared. It is disabled
when in the TEST-ON status (status that the
TEST
message
29
appears) or when the Tester
is delivering the result of PASS/FAIL judgement (when the
PASS
message
30
or the
FAIL
message
31
appears).
There are two cutoff currents, namely, UPPER cutoff current and LOWER cutoff current. You
can select either cutoff current with the
UP/LOW
key
13
and increment/decrement the selected
cutoff current with the
keys
12
.
If you press the
or
key alone, the rate of increment/decrement is the basic resolution
shown below. If you press it together with the
SHIFT
key
16
, the rate of increment/decrement
is ten times of the basic resolution. If you keep them pressed, increment/decrement repeats
automatically.
1.
key
This key increments the cutoff current setting. The set value is shown on the CURRENT
display (digital ammeter)
22
.
2.
key
This key decrements the cutoff current setting. The set value is shown on the CURRENT
display (digital ammeter)
22
.
Caution
• The UPPER and LOWER cutoff currents can be set mutually inde-
pendently and therefore it is possible that the latter is set at a value
higher than the former. If this is the case and the pass/fail judgement
function for the LOWER cutoff current is ON, however, the
mA
display (unit of current measure) blinks and the
READY
message
28
disappears to indicate that the test in this condition cannot be
done. The READY status resumes if the LOWER cutoff current is set
at a value lower than the UPPER cutoff current or if the pass/fail
judgement function for the LOWER cutoff current is turned OFF.
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