Kikusui TOS5050A, Operation Manual, Page: 60 / 120

5-6 TOS5051A/5050A
5.3 Checking the Tester before Starting Test
Operation
Before starting test operation with the tester, check and adjust certain items of the
tester as speci
fi ed below.
1. Zero adjustment of the analog voltmeter
Before turning ON the POWER switch, check that the pointer of the analog voltme-
ter indicates the “0” position. If it does not, adjust it to the “0” position with the zero
adjustment. If the tester power is ON when you intend this check, turn it OFF to do
this check.
Fig.5-1 Zero adjustment of the analog voltmeter
2. Interlock function
Before start operating the tester, be sure that the test system is protected with an
appropriate interlock function. (Refer to Section 6.3.3, “Interlock Function” on
Page 6-24.)
3. Tester not in PROTECTION status
If the tester is in the PROTECTION status (status that the “PROTECTION” mes-
sage appears), the tester will not start the test operation and will not deliver the test
voltage even when you press the START switch. To reset from the PROTECTION
status, eliminate the cause that has driven the tester into the PROTECTION status
and then press the STOP switch. Causes that drive the tester into the PROTECTION
status are as follows:
(a) The mating connector is connected to or disconnected from the REMOTE
CONTROL connector.
(b) The status of the REMOTE ENABLE input signal pins of the SIGNAL I/O con-
nector is altered.
(c) The INTERLOCK input signal pins of the SIGNAL I/O connector are open.
(d) The high voltage power supply section of the DC high voltage test section is
overheated (TOS5051A only).
+
Zero adjustment