264 User’s Manual TOS93 Series
Specifications | Other functions
Measurement display Maximum and minimum measurements can be displayed.
Normal Displays measurements during a test. Maximum and minimum values are not held.
Maximum and
minimum value
display
Displays the maximum current measurement for withstanding voltage (ACW/DCW)
tests, the minimum resistance measurement for insulation resistance (IR) tests, the
resistance measurement or voltage measurement for earth continuity (EC) tests.
Tes t s tart
method
Double Action When you press STOP, “READY” is shown for 0.5 seconds. A test starts only when
you press START within this period.
Momentary Tests are only executed while the START switch is held down.
Start Long A test starts only when the START switch is held down for at least 1 second.
PASS judgment display time
(Pass Hold)
Set the time to hold the pass judgment result display (0.05 s to 10.00 s) or hold it
until STOP is pressed (Infinity).
STOP signal disable (Fail Mode) It is possible to set the instrument so that fail judgment results and PROTECTION
mode cannot be released from a device connected to the SIGNAL I/O connector or
REMOTE connector.
Key lock Lock the operation of the keys to prevent changing the settings or overwriting
memory or programs by mistake.
Protection functions If a protection function is activated during a test, the output is shut off and the test
is stopped immediately.
In an LC test, the power supply to the EUT is stopped, and the A and B terminals
are opened.
Conditions that cause a protection function to be activated are as follows.
Interlock Interlock is activated.
Power Supply There is an error in the power supply section.
Output Error An output voltage outside of the following range is detected.
ACW, DCW, IR test: ±(10 % of setting + 50 V)
EC test: ±(10 % of setting + 2 A)
Over Load An output power outside of the following range is detected.
ACW: 550 VA, DCW: 110 W, EC: 240 VA,
LC: AC LINE OUT current exceeded approx. 15.75 A or the power exceeded
1600 VA.
Over Heat The internal temperature of the product is abnormally high.
Over Rating During a withstanding voltage test, an output current is generated for a length of
time that exceeds the output time limit (p.77).
Cal The preset calibration period is exceeded.
Remote The REMOTE connector is connected or disconnected.
Signal I/O There is a change in the SIGNAL I/O connector’s ENABLE signal.
Communication An internal communication error is occurring.
Over Range A value exceeding the maximum value of the measurement range is detected.
Measure An error is detected in the LC test measurement check.
Short A relay operation error is detected in an LC test.
Earth Fault When the grounding mode (GND) is set to Guard, abnormal current flows from the
high voltage output of this product to ground.
Scan I/F While scanning, the interface cable is disconnected. Or, the channel-assigned
scanner is not detected.
Item Specifications
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