Kikusui TOS5050A, Руководство по эксплуатации

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TOS5051A/5050A 4-7
Chap
.4
Descr
iption of F
ront and Rear P
anel Items
The tester takes approximately 0.5 seconds to respond to a range change by this
switch. The test cannot be started during this period. (If the “READY” message is
displayed, it disappears during this period.)
When the range you selected is entered, the TEST VOLTAGE RANGE message or
the AC/DC test mode message blinks to indicate that the entry has been completed.
You can clear the blinking message by pressing the STOP switch or by starting the
test by pressing the START switch.
• Before turning the TEST VOLTAGE switch, be sure that the TEST VOLTAGE
control is at the fully counterclockwise position (“0” position).
• During the TEST-ON period (period that “TEST” is lit), the TEST VOLTAGE
switch is disabled. During this period, it is possible that the actual position of the
switch does not conform with the TEST VOLTAGE RANGE message or the AC/
DC test mode message. When the test is terminated, the switch is enabled and the
selected test voltage range and AC/DC mode (TOS5051A only) take effect. Do
not operate the tester in this manner--that is, do not change the TEST VOLTAGE
switch during the TEST-ON period.
• Do not let the TEST VOLTAGE switch get caught between two range positions. If
you turn ON the POWER switch while the TEST VOLTAGE switch is caught in
the middle, the test voltage range message shows a blinking “0 kV” to notify that
the setting has not been con
fi rmed (in addition, if the TOS5051A is in the middle
of switching between AC and DC, both “AC” and “DC” light up simultaneously).
Because the setting has not been con
fi rmed, “READY” turns off to notify that the
tester is not in the READY status. If this happens, turn the TEST VOLTAGE
switch to the appropriate position.
[6] TEST VOLTAGE control
This control is used to adjust the test voltage. When you turn the control clockwise from
the “0” position, the test voltage increases. The “MAX” position is for the highest test
voltage corresponding to the voltage range selected by the TEST VOLTAGE switch.
On the TOS5051A, the control is for both AC and DC test modes.
• Be sure to turn the TEST VOLTAGE control fully counterclockwise (“0” position)
whenever you are not performing a test.
• When the TEST VOLTAGE control is set to the fully clockwise position (“MAX”
position) in the no load state, the output voltage in the DC mode may be higher
than the test voltage range value you selected with the TEST VOLTAGE switch.
In the AC mode, the output voltage may even be higher depending on the
fl uctua-
tion in the AC line voltage. Although higher voltages may be available, be sure to
operate the tester with voltages lower than the corresponding range.
Model Selectable ranges and mode
TOS5051A 0 kV to 5 kVAC or more 0 kV to 2.5 kVAC or more
0 kV to 5 kVDC or more 0 kV to 2.5 kVDC or more
TOS5050A 0 kV to 5 kVAC or more 0 kV to 2.5 kVAC or more
NOTE
NOTE