User`s guide

Chapter 10 151
Communication with External Instruments Using Handler I/O Port
I/O Signal Pin Layout and Description
10. Communication with External
Instruments Using Handler I/O Port
22 /PORT C0 Input/Output Bit 0 of the port C (4 bit parallel I/O port)
23 /PORT C1 Input/Output Bit 1 of the port C.
24 /PORT C2 Input/Output Bit 2 of the port C.
25 /PORT C3 Input/Output Bit 3 of the port C.
26 /PORT D0 Input/Output Bit 0 of the port D (4 bit parallel I/O port)
27 /PORT D1 Input/Output Bit 1 of the port D.
28 /PORT D2 Input/Output Bit 2 of the port D.
29 /PORT D3 Input/Output Bit 3 of the port D.
30 PORT C STATUS Output
Port C status signal.This signal is changed to the High
level when the port C is configured to output port. It
is changed to the Low level when the port is
configured to input port.
31 PORT D STATUS Output
Port D status signal.This signal is changed to the High
level when the port D is configured to output port. It
is changed to the Low level when the port is
configured to input port.
32 /WRITE STROBE Output
A output port write strobe signal.When data is present
(that is, output level changes) on any of the output
ports, this signal provides a negative pulse.
33 /PASS FAIL Output
A limit test result
*3
signal.This signal changes to the
High level when limit test, bandwidth test, or ripple
test results return FAIL. It changes to the Low level
when all limit test results return PASS.
34 /SWEEP END Output
A sweep completion signal.When measurement (all
sweeps of all channels) and data calculation are
completed, this signal provides this signal provides a
negative pulse.
35 +5V Output
Provides +5V DC power supply for external
instruments.
36 /PASS FAIL STROBE Output
Limit test result write strobe signal.When limit test
result is present on /PASS FAIL, this signal provides a
negative pulse.
*1.This signal provides various functions depending upon the setting of
:CONT:HAND:IND:STAT command on page 302.
*2.This signal provides various functions depending upon the setting of
:CONT:HAND:RTR:STAT command on page 303.
*3.
The overall test result that combine the test results for all traces in all channels.
Table 10-1 Description of the handler interface I/O signals
Pin
number
Signal name Input/Output Description