Agilent Technologies Switch/Measure manual External Scanning

2Features and Functions

Remote Interface Operation: The following program segment configures the instrument for a manual scanning operation.

TRIG:SOURCE BUS	Select bus (manual) mode
TRIG:COUNT 2	Sweep the scan list 2 times
INIT	Initiate the scan

Then, send the *TRG (trigger) command to begin each scan sweep.

The *TRG command will not be accepted unless the internal DMM is in the “wait- for- trigger” state.

Note: To stop a scan, press and hold the Scan (Measure) key.

External Scanning

In this configuration, the instrument sweeps through the scan list once each time a low- going TTL pulse is received on the rear- panel Ext Trig Input line (pin 6).

	1	Input
6		5 V
	Ext Trig Input (Pin 6)

0 V

9 Gnd (Pin 9)

5

> 1 µs

Ext Trig Input connector (as viewed from rear of instrument)

•You can specify a scan count which sets the number of external pulses the instrument will accept before terminating the scan. See “Trigger Count” on page 49 for more information.

•If the instrument receives an external trigger before it is ready to accept one, it will buffer one trigger and then ignore any additional triggers received (no error is generated).

•All readings from the scan are stored in non- volatile memory. Readings accumulate in memory until the scan is terminated (until the scan count is reached or until you abort the scan).

•Mx+B scaling and alarm limits are applied to measurements during the scan and all data is stored in non- volatile memory.

48 34980A User’s Guide