FREQ Command

Applies to: DLOG mode. Can be set and read in any mode; takes effect only in DLOG mode.

The FREQ command sets the output data frequency in DLOG mode. This command does not affect the behaviour of the OSC and DMM modes.

The command accepts output data frequencies from 0.1 Hz to 0.9 Hz in steps of 0.1 Hz, and integer frequencies from 1 Hz to 10 Hz. Any other value is rejected with NAK:x. Note that the ADC is fixed at 100 kHz, so an average is computed in order to obtain the desired output data frequency. The average depends on the FREQ value: if FREQ = 1, then 100 000 samples are averaged to produce the output current value.

Command Format:

R/W	Command	Response	Description
W	FREQ:<output_freq>	ACK / NAK:x	Set the DLOG output frequency
R	FREQ:?	<output_freq>	Read the DLOG output frequency

Parameter(s):

Name	Type	Allowed values	Step	Default	Description
<output_freq>	float	0.1 – 0.9	0.1	10	Output frequency in Hz
		1 – 10	1

Example(s):

Set the output data frequency in DLOG mode to 0.5 Hz:

FREQ:0.5
ACK

FREQ:?
0.5