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6.3 Measurement by External Control Terminal and External Output Terminal
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NOTE
.3.2 External Output Terminal (Output Signal)
NOTE
The input signal is disabled under the following conditions. Any function
dependent on the signal is also disabled.
･ Selection of a comparator No. (COMP0 - COMP4) during communications
via RS-232 or GP-IB
･ The measurement trigger (TRIG) is issued if the instrument is not in hold
mode.
･ The comparator output request (MANU) is issued if the comparator is not
used when the external output terminal mode is set to AUTO in the
comparator setting.
･ Print request (PRINT) is issued when no printer interface (9589) is
connected.
･ The comparator number (COMP0 to COMP4) is selected while the
comparator setup screen is displayed.
･ The measurement trigger (TRIG) is issued while the zero-adjust executes.
･ The comparator is automatically turned on and auto-range changed to
manual range if the comparator number is selected by the comparator
number selection signal (COMP0 to COMP4) while auto-range is used.
･ When the comparator number (COMP0 to COMP4) is used, the remote
mode is active.
In the following text, "0" and "1" indicate the following two respective
states:
0: The output transistor is turned off, and no current flows through it.
1: The output transistor is turned on, and current flows through it.
■ Comparator result (Hi (FAIL), IN (PASS), Lo (FAIL))
When the result is "1," the comparator result associated with the signal is
valid.
■ End of measurement (EOC)
A change from "0" to "1" in this signal indicates that current
measurement is complete, and that the comparator result output is
determined.
■ Abnormal measurements (NG)
A value of "1" indicates an abnormal measurement. This signal is set to
"1" even when abnormal measurements are detected in hold mode.
Abnormal measurement results indicate a broken lead, incorrect contact,
or defective internal analog circuits. For more information on abnormal
measurements, see Section 4.5 "Starting Measurement."
･ If the comparator is not used, or if the mode of the comparator external
control terminal is MANU but the comparator output request (MANU) is
not issued, "0" is output for all comparator results (Hi (FAIL), IN (PASS),
and Lo (FAIL)). In the NG state, "0" is output for all comparator results
(Hi (FAIL), IN (PASS), and Lo (FAIL)).
･ If no measurement is carried out after the instrument is turned on, all
output signals are set to "0." When the comparator result is FAIL in
resistance and voltage mode, Hi (FAIL) and IN (PASS) are
simultaneously set to "1."
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