Rohde & Schwarz SML01, Operating Manual

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R&S®SML / R&S®SMV03 Pulse Modulation (Option R&S SML-B3)
1090.3123.12 4.15 E-6
Double Pulse Delay Delay between the two pulses of a double pulse. This value is indicated only
if Double Pulse State is set to On.
IEC/IEEE-bus command
:SOUR:PULS:DOUB:DEL 1us
Double Pulse State Switching on/off double pulse.
On
Double pulse is switched on
Off Single pulse
IEC/IEEE-bus command
:SOUR:PULS:DOUB:STAT OFF
Trigger Mode Selection of trigger mode.
Auto
The pulse generator is triggered automatically. The pulse period
is as entered under Pulse Period.
Single The pulse generator is triggered manually. The pulse period is
determined by the user.
Ext Single The pulse generator is externally triggered. The pulse period is
determined by an external signal at the PULSE input.
Ext Gated The pulse generator is triggered if the gate signal is active.
IEC/IEEE-bus command
:TRIG:PULS:SOUR AUTO
Execute Single Pulse
Starts a single pulse. This function is displayed and is effective only if
Single Mode is selected.
IEC-Bus-Befehl
:TRIG:PULS:IMM
Ext Trigger Slope Selection of active edge of external trigger signal.
Pos
The pulse generator is triggered on the positive edge of the
external signal.
Neg The pulse generator is triggered on the negative edge of the
external signal.
IEC/IEEE-bus command
:TRIG:PULS:SLOP POS
Ext Gated Input Polarity
Definition of active level of gate signal (HIGH or LOW). Normal (HIGH) and
Inverse (LOW) are available.
IEC-Bus-Befehl
:TRIG:PULS:EGAT:POL NORM
Pulse Generator
As an internal modulation source, the pulse generator offers the possibility of setting single and double
pulses with variable pulse delay, pulse width and pulse period. The pulse generator can be triggered
internally or by an external signal at the PULSE input. The following Pulse modi can be selected: Auto
Trig, Ext Trig, and Ext Gated (see Fig. 4-13 to Fig. 4-15). The internal trigger signal is derived from the
reference frequency and hence very stable. In the trigger mode Ext Trig, the positive or the negative
edge can be used for triggering the pulse generator. In the trigger mode Ext Gated, the pulse generator
is triggered as long as an active Gate signal arrives at the PULSE input.
The pulse generator can also be used as an independent unit, ie without the pulse modulator being
controlled if the pulse modulation source (Pulse Source) is switched to OFF or EXT. The pulse can be
tapped at the VIDEO output.