Fluke PM-3370B, PM-3380B LF-REJECT 30 KHz cutoff frequency, HF-REJECT 30 KHz cutoff frequency

USING THE COMBISCOPE INSTRUMENTS 3 - 23

LF-REJECT (30 KHz cutoff frequency):

LF -REJECT

0dB

-3dB

30kHz	FULL BANDWIDTH
		FREQ.
		ST7428

LF reject (HF passed) causes the signal to be passed from the cutoff frequency (30 KHz) to the full bandwidth frequency (60/100/200 MHz).

Figure 3.6 LF Reject

PROGRAM EXAMPLE:

TRIGger:FILTer:LPASs:STATe ON	Sets Low-Pass filter on + cutoff frequency = 0 Hz
	(DC coupling).
TRIGger:FILTer:LPASs:FREQuency 3E+4	Sets cutoff frequency = 30 KHz;
	this selects MTB trigger LF-reject.
HF-REJECT (30 KHz cutoff frequency)

HF-REJECT

0dB

-3dB

30kHz	FULL BANDWIDTH
		FREQ.
		ST7429

HF reject (LF passed) causes the signal to be passed from 0 Hz to the cutoff frequency (30 KHz).

Figure 3.7 HF Reject

PROGRAM EXAMPLE:

***

*** Select HF-reject on MTB triggering.

TRIGger:FILTer:HPASs:STATe ON	Sets High-Pass filter on;
	this selects MTB trigger HF-reject.

3.4.1.2Video triggering

TV video triggering enables stable triggering on video frames and lines from various TV standards without adjusting the trigger level, and can be selected by programming TRIGger:TYPE VIDeo.

Video triggering can be programmed on signals with a positive or negative signal polarity using the TRIGger:VIDeo:SSIGnal command.