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External triggering
NOTE
External triggering and associated voltage stepping discussed below is available
only via remote with the Model 2306-VS. See Section 6 of the Model 2306
Instruction Manual for more detailed information on these features.
Description
The Model 2306-VS has four rear panel mounted BNC connectors (two inputs and two out-
puts) allowing external triggering and handshaking for both channels. The triggering capability
adds the ability to automatically step through different voltages and take measurements at each
step under the control of external triggering. A typical trigger sequence is shown in
(The exact sequence will depend on how the instrument is programmed.)
Figure 17
Typical trigger sequence
Trigger
Out (1)
Delay
(4)
Output
Voltage
Step (3)
Trigger In (2)
The sequence is as follows:
1. Sending TRIG:EXT:ENAB or TRIG:EXT:ENAB:INIT will generate a trigger output
pulse when the instrument is ready for trigger in pulses
2. The trigger input pulse applied to the TRIGGER IN jack is detected.
3. The voltage steps to the next value (if voltage stepping is enabled).
4. The unit waits for the programmed delay period.
5. Measurements are taken (if enabled).
6. The unit outputs the trigger output pulse on the TRIGGER OUT jack to indicate that the
step has been completed.
7. The complete sequence in steps 2-6 repeats for the programmed number of steps
(20 maximum).
Trigger
Trigger
Out (6)
Out
Delay Meas.
Step
Meas.
(5)
Delay Meas.
Trigger In (7)
Trigger In
Time
Trigger
Out
Numbered sequence shown
on first step correspond to
Step
steps in text.
Delay = Programmed Delay
Meas. = Measurement Period
Advanced features
29
Figure
17.
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