Kikusui TOS5050A, Руководство по эксплуатации

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TOS5051A/5050A 6-27
Chap
.6
Test Procedures
6.3.5 Output Signal
The tester status can be output from pins 2 to 8 of the SIGNAL I/O connector. Con-
struct the circuit by referring to the pin assignments given in Table 6-2 and the
example shown below.
When driving the relay
Drive the relay with the H.V ON signal. Refer to Fig. 6-6.
When obtaining a digital low level signal
Achieve a digital LOW level signal using the H.V ON signal. Refer to Fig. 6-7.
• Lay the control signal wires apart (more than 500 mm) from the HV test
lead 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.
• The common lines of these output signal circuits are connected to those of the
input signal circuits of the SIGNAL I/O connector.
• When driving an inductive load (such as a relay), be sure to connect a diode in
parallel to the coil of the load.
• The open-collector circuit elements and board can be damaged if the output cir-
cuit is shorted. It is recommended to provide a protective fuse in the output cir-
cuit.
• 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
tester to that of the external device. (Do not connect the ISOL COM pins to the
shielding line or an earth ground.)
This will isolate the SIGNAL I/O circuits from the external environments and will
become more resistant against noise.
Fig. 6-6 Fig. 6-7
1 2 3 4 5 6 7
14 13 12 11 10 9 8
Load
Not greater than 400 mA
Not higher than 30 V
1 2 3 4 5 6 7
14 13 12 11 10 9 8
Not higher than 30 V
R
A
Low level when HV
ON signal is applied
CAUTION
NOTE