Kikusui TOS5101 - Setting the Upper Cutoff Current

Chapter 6 TEST PROCEDURES
6-13
Caution
• Before turning the TEST VOLTAGE switch
5
, be sure that the TEST
VOLTAGE
control
6
is in the fully counterclockwise position (“0”
position).
•
During the TEST-ON period (period that the TEST message
29
ap-
pears), the
TEST VOLTAGE switch
5
is disabled. During this period, it
is possible that the actual position of the switch does not conform with the
TEST VOLTAGE RANGE message
19
or the AC / DC test mode message
20
. When the test period has elapsed, the switch is enabled and the
selected test voltage range and AC/DC mode (mode selection is for
TOS5101 and TOS5051 only) are effected. Do not operate the Tester in
this manner — that is, do not change the
TEST VOLTAGE switch
5
during the TEST-ON period.
• Do not let the
TEST VOLTAGE switch
5
caught on a midway in turning
it from one range position to another range position. If you turn ON the
POWER
switch
1
while the TEST VOLTAGE switch
5
is caught on a
midway, the TEST VOLTAGE RANGE message
19
will indicate 0 kV, both
AC / DC test mode messages
20
will appear at the same time (except for
TOS5050) and will blink to show that no range selection has been success-
fully accomplished. When changing the
TEST VOLTAGE switch
5
, turn
it accurately to a range position.
6.2.2 Setting the Upper Cutoff Current
This procedure is to set the upper cutoff current — criterion for pass/fail judgement on the DUT. If the
leak current that flows through the DUT is larger than this limit, the DUT is judged to be FAIL.
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 9-9, 9-10 and 9-11).
Setting Procedure
Step 1
Select the upper cutoff current setting mode with the
UP/LOW
key
13
and the
UPPER message
23
will appear and the preset upper limit current will be indicated
on the CURRENT readout
22
.
Step 2
Adjust the preset upper cutoff current value as you may require, with the
keys
12
. If you press the
SHIFT
key
16
at the same time, the adjusting speed is increased
by a factor of ten. The current value is displayed on the CURRENT readout
22
.
Upper Cutoff Current Setting Range
Model Upper cutoff current range
TOS5101 0.1 to 5.5mA
TOS5051 0.1 to 11mA
TOS5050 —