Kikusui TOS5050A - CURRENT readout (digital ammeter)

TOS5051A/5050A 4-15
Chap.4
Description of Front and Rear Panel Items
[22] CURRENT readout (digital ammeter)
When the tester is in the TEST-ON status (“TEST” is lit), the CURRENT readout
indicates the measured output current; when the tester is in other status than the
TEST-ON status, it indicates the preset upper or lower cutoff current. It is a 3-digit
7-segment readout.
The display can be changed between upper and lower cutoff current settings with
the UP/LOW key when the tester is in the READY status (“READY” is lit) and the
“KEYLOCK” message is OFF. The “UPPER” message means that the tester is in
the status for setting the upper cutoff current; the “LOWER” message means that
the tester is in the status for setting the lower cutoff current.
You can increment/decrement the upper or lower cutoff current with the or key
when the tester is in the READY status (“READY” is lit) and the “KEYLOCK”
message is OFF. (If you press the SHIFT key at the same time, the increment/decre-
ment rate is multiplied by 10.)
If the lower cutoff current is higher than the upper cutoff current and the lower pass/
fail judgment function is ON, “mA” (unit of measure) blinks and the “READY”
message disappears to alert you to that the setting is illogical and the test cannot be
done. When the lower cutoff current is set lower than the higher cutoff current or
when the lower pass/fail judgment function is turned OFF, the mA display automat-
ically stops blinking and the tester resumes the READY status.
On the TOS5051A, the upper cutoff currents can be preset independently for AC
test mode and DC test mode, and the lower cutoff currents also can be preset inde-
pendently for AC test mode and DC test mode.
1. Displayed items
2. Setting ranges
3. Setting resolutions and display formats
When in READY status When in TEST-ON status
When “UPPER” is lit When “LOWER” is lit
Upper cutoff current Lower cutoff current Measured current
Model
AC mode test
Upper cutoff current range Lower cutoff current range
TOS5051A
0.1 mA to 110 mA 0.1 mA to 110 mA, OFF
TOS5050A
Model
DC mode test
Upper cutoff current range Lower cutoff current range
TOS5051A
0.1 mA to 11 mA 0.1 mA to 11 mA, OFF
TOS5050A — —
UPPER/LOWER cutoff current range Basic resolution Display format
0.1 mA to 9.9 mA
0.1 mA X.X
10 mA to 110 mA
1 mA XXX