Rohde & Schwarz VSE-K149, User Manual

Page: 34 / 143

Configuration
R&S
®
VSE-K149
34 User Manual 1179.3315.02 ─ 01
Note: When triggering is activated, the squelch function is automatically disabled.
Remote command:
TRIGger[:SEQuence]:SOURce
on page 122
Free Run ← Trigger Source ← Trigger Settings
No trigger source is considered. Data acquisition is started manually or automatically
and continues until stopped explicitly.
Remote command:
TRIG:SOUR IMM
, see
TRIGger[:SEQuence]:SOURce
on page 122
External Trigger 1/2/3/4 ← Trigger Source ← Trigger Settings
Data acquisition starts when the TTL signal fed into the specified input connector
meets or exceeds the specified trigger level.
Note: If the optional 2 GHz bandwidth extension (B2000) is active, only External Chan-
nel 3 is supported.
For details, see the "Instrument Tour" chapter in the R&S VSE Getting Started manual.
"External Trigger 1"
Trigger signal from the TRIGGER 1 INPUT connector.
"External Trigger 2"
Trigger signal from the TRIGGER 2 INPUT / OUTPUT connector.
Remote command:
See
TRIGger[:SEQuence]:SOURce
on page 122
External Channel 3 ← Trigger Source ← Trigger Settings
Data acquisition starts when the signal fed into the Ch3 input connector on the oscillo-
scope meets or exceeds the specified trigger level.
Note: In previous firmware versions, the external trigger was connected to the Ch2
input on the oscilloscope. As of firmware version R&S FSW 2.30, the Ch3 input on the
oscilloscope must be used!
This trigger source is only available if the optional 2
GHz bandwidth extension
(R&S VSE-B2000) is active (see R&S VSE I/Q Analyzer and I/Q Input User Manual).
Note: Since the external trigger uses a second channel on the oscilloscope, the maxi-
mum memory size, and thus record length, available for the input channel 1 may be
reduced by half. For details, see the oscilloscope's data sheet and documentation.
Remote command:
TRIG:SOUR EXT
, see
TRIGger[:SEQuence]:SOURce
on page 122
IF Power ← Trigger Source ← Trigger Settings
The R&S VSE starts capturing data as soon as the trigger level is exceeded around
the third intermediate frequency.
(The third IF represents the center frequency.)
This trigger source is only available for RF input.
The available trigger levels depend on the RF attenuation and preamplification. A refer-
ence level offset, if defined, is also considered.
For details on available trigger levels and trigger bandwidths, see the data sheet.
Trigger Settings