Microtest 8740 - Remote Cable Wiring

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3. REMOTE CABLE
The definition of the 15-PIN connector is as described below; CTL[7:0] is open collector output and
requires an external pull-up resistor to provide high potential.
PIN
Signal Name
Reference
Potential
Single DUT
MultDUT signal
Pull-up Resistor
1
CTL0
EGND
Testing
Testing
Must use 4.7K-
10KΩ
2
CTL1
EGND
High voltage
testing
High voltage testing
Must use 4.7K-
10KΩ
3
CTL2
EGND
PASS Status
Total PASS
Must use 4.7K-
10KΩ
4
CTL3
EGND
FAIL Status
Total FAIL
Must use 4.7K-
10KΩ
5
CTL4
EGND
DUT 1 FAIL/PASS
Must use 4.7K-
10KΩ
6
CTL5
EGND
DUT 2 FAIL/PASS
Must use 4.7K-
10KΩ
7
CTL6
EGND
DUT 3 FAIL/PASS
Must use 4.7K-
10KΩ
8
CTL7
EGND
DUT 4 FAIL/PASS
Must use 4.7K-
10KΩ
9
EGND
EGND
The internal isolated power reference potential and GND has
an insulation relationship of >2GΩ.
10
SW1
EGND
Test can be started when EGND + SW1 short-circuits (Panel
Test).
11
SW2
EGND
Exits when EGND+ SW2 short-circuits (Exits Panel).
12
RESET
EGND
Machine reset when RESET+ EGND short-circuits (Panel
Reset).
13
+5D
EGND
The internal isolated power’s 5V 0.2A output capability must
not short-circuit with the external power.
14
+12D
GND
The internal 12V requires the use of a REMOTE extension
cable. Connect EGND and GND.
15
EGND
The internal isolated power reference potential and GND has
an insulation relationship of >2GΩ.