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(8.5x11) 6000 Manual Cover - Newport Corporation

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RWS_n?<br />

Read Single Channel Measurement With Status Query<br />

Syntax: RWS_n?<br />

Parameters: None<br />

Function:<br />

This query returns the last measurement taken from the specified channel.<br />

The units of this measurement are the units defined at the time the reading<br />

was made. Because it is possible to make this query faster than measurements<br />

are actually being taken, the values returned by successive queries<br />

may be multiple reports of the same measurement.<br />

To ensure that fresh data is being read the NDA(new data available) bit in the<br />

Status Byte can be checked either by issuing a serial poll or by using the<br />

*STB? command. A serial poll is recommended if the GPIB interface is being<br />

used. The NDA bit will be 1 if the last measurement has not been read. The<br />

NDA bit for the specified channel will be reset to 0 immediately after a measurement<br />

is queried from that channel and will stay 0 until a new reading is<br />

taken.<br />

Returns: ,<br />

is an integer that represents the status of the returned value.<br />

will be 0 for ok, 1 for over range, 2 for saturated and 3 for data error,<br />

and 4 for ranging.<br />

is a floating point number in the exponential format.<br />

Related Commands: *STB?, MODE_n, MODE_n?, R?, R_n?, RWS? UNITS_n,<br />

UNITS_n?<br />

SFREQ<br />

DC Sample Frequency Select<br />

Syntax: SFREQ <br />

Parameters:<br />

The parameter is of type . The range of this number depends<br />

on the current DC sample precision (see SPREC). If the precision is<br />

20000 then the range is 0.001 to 25Hz. If the precision is 4096 then the range is<br />

0.001 to 500Hz when two detector calibration modules are plugged into the<br />

meter and 1000Hz for one.<br />

Function:<br />

This command determines how often a signal is sampled when in DC continuous<br />

mode. Both channels sample data at the same rate when in DC continuous<br />

mode.<br />

Related Commands: SFREQ?, SPREC, SPREC?<br />

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