User`s guide

150 Chapter 10
Communication with External Instruments Using Handler I/O Port
I/O Signal Pin Layout and Description
Table 10-1 Description of the handler interface I/O signals
Pin
number
Signal name Input/Output Description
1 GND —— Ground.
2 /INPUT1 Input
When this port receives a negative pulse, /OUTPUT1
and /OUTPUT2 are changed to the Low level.
3 /OUTPUT1 Output
Changes to the Low level when /INPUT1 receives a
negative pulse.A command can be available for
altering the Low/High level logic.
4 /OUTPUT2 Output
Changes to the Low level when /INPUT1 receives a
negative pulse.A command can be available for
altering the Low/High level logic.
5 /PORT A0 Output Bit 0 of the port A (8 bit parallel output port)
6 /PORT A1 Output Bit 1 of the port A.
7 /PORT A2 Output Bit 2 of the port A.
8 /PORT A3 Output Bit 3 of the port A.
9 /PORT A4 Output Bit 4 of the port A.
10 /PORT A5 Output Bit 5 of the port A.
11 /PORT A6 Output Bit 6 of the port A.
12 /PORT A7 Output Bit 7 of the port A.
13 /PORT B0 Output Bit 0 of the port B (8 bit parallel output port)
14 /PORT B1 Output Bit 1 of the port B.
15 /PORT B2 Output Bit 2 of the port B.
16 /PORT B3 Output Bit 3 of the port B.
17 /PORT B4 Output Bit 4 of the port B.
18
/EXTERNAL
TRIGGER
Input
An external trigger signal. When the trigger source is
set to the “External,” this port generates a trigger in
respond to the trailing edge of a negative pulse.
19 /PORT B5 Output Bit 5 of the port B.
20
*1
/PORT B6
Output
Bit 6 of the port B.
/INDEX
Indicates that analog measurement is complete.The
/INDEX signal changes to the Low level when analog
measurement (all sweeps of all channels) is complete.
When the handler receives the signal, it assumes that
it is ready to connect the next DUT.However, no
measurement data is available until data calculation
completes.
21
*2
/PORT B7
Output
Bit 7 of the port B.
/READY FOR
TRIGGER
Indicates that the instrument is ready for
triggering.This signal is changed to the Low level
when the instrument is ready for receiving a trigger
signal.