ET35 Series Digital Bridges(LCR)Operating Instructions
Hangzhou Zhongchuang Electron Co., Ltd.
102
26
NC
25
/KEY LOCK
When the line is valid, all function keys on the
front panel of ET35 are locked and do not work.
27
28
EXT.DCV1
External DC voltage 1: DC supply pin of the
photocoupling
signal
in
the
instrument
(/EXT.TRIG, /KeyLock, /ALARM, /INDEX, /EOM
)
29
/ALARM
When the power failure occurs, /ALARM is valid.
30
/INDEX
When the simulation measurement is completed
and the test end of ET35 can be connected to
the next DUT, /INDEX signal is valid. But the
comparison results are valid only when /EOM is
valid.
31
/EOM
After the measurement ends: the signal is valid
when the measurement data and comparison
results are valid.
32 33
COM2
Reference ground used by the external power
supply EXTV2
34 35 36
COM1
Reference ground used by the external power
supply EXTV1
Electrical characteristics
DC isolation output: Each DC output (pin 1 to 16) is isolated by the open collector
optocoupler output. The output voltage of each line is set by the pull-up resistance on the
HANDLER interface plate. The pull-up resistance is connected to the internal supplied
voltage (+5V) or to the external supply voltage (EXTV
:
+5V) with the jumper.
Electrical characteristics of DC isolation output
Output signal Rated output voltage Maximum current
reference ground
LOW
HIGH
Comparison signal
internal pull-up voltage:
/BIN1 - /BIN9
ET35-ground
/AUX
/OUT
≦
0.5V
+5V~+24V
6mA
external voltage:
/PHI
COM1
/PLO
Control signal
internal pull-up voltage:
/INDEX
ET35-ground
/EOM
≦
0.5V
+5V -- +24V
5mA
external voltage:
/ALAOM
COM2
Содержание ET3501
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