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User Manual 3155

Programming Reference 4-45

OUTPut Subsys-

tem

This subsystem controls the characteristics of the output. It controls

filter type and filter cutoff frequency. It is also used to control the sync

output, source and position. Optional nodes were omitted from these

commands. Factory defaults after *RST are shown in bold typeface.

Parameter low and high limits are given where applicable.

Keyword Parameter Form Default,Low Limit,High

Limit

:OUTPut (?) {OFF|ON|0|1} OFF

:FILTer (?) {NONE|25M|50M|ALL} NONE

:SYNC (?) {OFF|ON|0|1} OFF

:SOURce (?) {BIT|LCOMplete} BIT

:POSition (?) <position> 0,0,n

:WIDTh (?) <width> 4,4,100000

:TTLTrig<N> {1|2|3|4|5|6|7}

[:STATe] (?) {OFF|ON|0|1} OFF

OUTPut{OFF|ON|0|1}

Purpose

This command turns the 3155 output on and off.

• ON or 1 sets the output on

• OFF or 0 sets the output off

Parameter type

Discrete

OUTPut?

Response and default

The 3155 returns 1 if the output is on, or 0 if the output is off. Default value is 0.

OUTPut:FILTer{NONE|25M|50M|ALL}

Purpose

This command selects which filter is connected to the 3155 output. Observe the following restrictions when

you try to use this command:

1) Filter selection is not available when the instrument is set to output the standard sine waveform. In fact,

the default waveform shape is sine. Therefore, filter selection is available for use only after you select a

different waveform, or change the output mode to use.

2) Filters are placed before the output amplifier. Therefore, do not expect the filters to remove in-band am-

plifier harmonics and spurious.

• NONE disconnects all filters from the output path

• 25M connects the 25 MHz low pass elliptic filter

• 50M connects the 50 MHz low pass elliptic filter

• ALL connects both the 25 MHz and the 50 MHz filters in series

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Racal Instruments 3155 Spezifikationen Seite 156