TOS5051A/5050A
6-25
Chap
.6
Test Procedures
6.3.4
Start/Stop Control
Pins 10, 11, and 12 of the SIGNAL I/O connector are used to remotely control start/
stop.
Control procedure
1.
Set pin 12, the remote control enable signal (RR ENABLE), to low level
by shorting the pin to pin 13 or 14 (ISOL COM). This disables the
START switch on the panel.
However, you can stop the voltage both from the STOP switch on the panel
and the stop input signal (RR STOP).
2.
When pin 7, the ready signal, is ON, set pin 10, the start signal (RR
START), to low level by shorting the pin to pin 13 or 14 (ISOL COM).
This starts the tester.
3.
Set pin 11, the stop signal (RR STOP), to low level by shorting the pin
to pin 13 or 14 (ISOL COM). This stops the tester.
4.
To release the control, set the remote control enable signal (RR
ENABLE) to high level.
The “REMOTE” message disappears, the START switch on the panel is
enabled, and the start signal (RR START) of the SIGNAL I/O connector is dis-
abled.
• Lay the control signal wires apart (more than 500 mm) from the HV test
leads and DUT. Never short the HV test lead to a signal wire. If you do, it
may utterly damage the internal circuits of the tester.
• When the remote control enable signal (RR ENABLE) is changed, the tester
enters the PROTECTION status (“PROTECTION” is lit) once. Release the pro-
tection using the STOP switch on the panel or the stop signal (RR STOP).
• Do not remote-control the tester simultaneously from both REMOTE CONTROL
connector and SIGNAL I/O connector. If you do, the “REMOTE” message will
disappear and the START switch will be enabled.
• If the FAIL MODE switch of TEST MODE switches is set to ON, the FAIL status
and PROTECTION status cannot be remotely reset by applying a remote STOP
signal. They must be locally reset with the STOP switch
• The input pins are pulled up to +15 V by a resistor. Opening an input pin is equiv-
alent to entering a high level signal.
• The internal control circuits of the tester has been designed to be resistant against
interference by noise generated by the tester and its peripheral devices. However,
it is not recommendable to connect non-shielded wires to the pins of the SIGNAL
I/O connector. Such wires may act as antennas and may cause interference to the
devices.
For the mating plug of the 14-pin Amphenol connector plug, cables, and external
circuits, use a shielded metallic 14-pin Amphenol connector plug, shielded cables,
and external circuits fabricated in a shielded casing. Connect the chassis of the
CAUTION
NOTE
Summary of Contents for TOS5050A
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