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5.
HANDLER Interface
5.1 Introduction
The HANDLER interface card is an optional I/O card that can be purchased for the tester. It
allows the tester to be controlled by external signals or to send response signals back to the
controlling device.
5.2 Specifications
5.2.1 Driving Capability
Internal Signal Output Specification:
External Signal Output Specification: DC 3V-26V (HIGH), 10mA± 4mA, current limit is
5.2.2 Pin Assignment
The pin assignments of the HANDLER card are described in the table below:
Pin No.
Signal
1
CHN1
2
CHN2
3
CHN3
4
CHN4
5
CHN5
6
CHN6
7
CHN7
8
CHN8
9
CHN9
10
CHN10
11
PASS_FAIL
12
nEOT
13
nEXT_START
14
nEXT_STOP
15
+VEXT
DC 5V, 40-60mA
10mA± 4mA for every circuit.
Input/Output
The output signals from CHN1-10 indicate the
Output
test results of CH1-10.
Lo: PASS, Hi: FAIL.
The output signal of PASS_FAIL indicates the
combined test result of all channels when each
Output
Step ends.
Lo: TOTAL PASS, Hi: TOTAL FAIL.
The output signal nEOT indicates if the test
procedure has ended.
When the signal is HIGH, the test procedure is
Output
under execution.
When the signal is LOW, the test procedure
has ended or the tester is in standby.
The external START signal (input - active
Input
LOW).
Input
The external STOP signal (input - active LOW).
The external DC voltage input. The input
－
voltage range is between +3V and +26V.
HANDLER Interface
Description
5-1
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