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6240B DC Voltage Current Source/Monitor Operation Manual

5.2.11 External Control Signals

5-59

5.2.11.1 Restrictions on Using External Trigger

This section describes restrictions on using the external trigger (TRIGGER IN signal).

The TRIGGER IN signal controls the source and measurement timings to synchronize with external

devices.

Confirm the following restrictions before inputting the external trigger to prevent any malfunctions.

Restrictions:

1. Do not input the TRIGGER IN signal in Standby status, or when switching between Operate, Sus-

pend, and Standby.

2. Ensure that the TRIGGER IN signal, trigger from the TRG key and remote trigger (*TRG) do not

overlap.

3. Restrictions on setting the pulse period Tp and the hold time Th

When the external trigger (TRIGGER IN signal) is used, there are restrictions on setting the pulse

period Tp and the hold time Th. (See Table 5-15 and Table 5-16.)

4. Restrictions on the time Thp (ext) from sweep start to the next trigger signal input

For the sweep source mode, there are restrictions on setting the time Thp (ext) from the trigger signal

input for sweep start to the trigger signal input for the next step. (See Table 5-15 and Table 5-16.)

5. Restrictions on the required time Top from specifying Operate to inputting the external trigger

The minimum time is required for the time Top from specifying Operate by a remote command or the

external signal (OPR In signal) to inputting the external trigger. (See Table 5-17.)

6. Allow the 6240B at least 10 ms after completion of the previous sweep to input the TRIGGER IN

signal for sweep start.

Table 5-15 Restrictions on Tp, Tp (ext), Th and Th (ext)

Measurement

Memory

mode

Tp, Tp (ext)

Tp (ext)

min

Th, Th (ext) Thp (ext)

OFF BURST 1 ms Tp Tp(ext)-TA 1.3 ms 1 ms Th Th(ext)-3 ms

4 ms Th(ext)

Thp(ext)=

Th(ext)+Tp(ext)

NORMAL 10 ms Tp Tp(ext)-TA 15 ms

OFF

ON BURST 2.2 ms Tp Tp(ext)-TA 2.5 ms

NORMAL 10 ms Tp Tp(ext)-TA 15 ms

OFF

ADCMT 6240B User Manual

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