User manual

Acquisition and Setup
R&S
®
RTO
51User Manual 1316.0827.02 ─ 06
RF reject BW
Sets the limit frequency for "RF reject" trigger coupling. This limit is applied to the trigger
channel and to the acquisition channels enabled for filtering.
SCPI command:
TRIGger<m>:RFReject<n> on page 451
2.3.5 Horizontal Accuracy
The Horizontal Accuracy contains standard and optional settings to improve measure-
ment and analysis accuracy and to reduce jitter effects.
2.3.5.1 Reference (OCXO, Option RTO-B4)
The option RTO-B4 provides an Oven Controlled Crystal Oscillator (OCXO) that produ-
ces a 10 MHz internal reference signal with very precise and stable frequency. With this
option, you can also use an external reference signal. The input and output connectors
for the external reference signal are located on the rear panel alongside the external
trigger input.
Detected
Indicates if the OCXO option is installed and detected by the instrument.
Oven hot
Indicates when the oven has reached its nominal temperature and is operating with the
specified accuracy.
External reference
Sets the frequency of an external reference input signal that is connected to the external
reference input on the rear panel of R&S RTO. A frequency range from 1 MHz to 20 MHz
is supported.
SCPI command:
SENSe[:ROSCillator]:EXTernal:FREQuency on page 452
Use external reference
Enables the use of the external reference signal instead of the internal OCXO reference.
If an external reference is used, the frequency of the reference output signal is the same
as of the reference input signal. Otherwise, the frequency of the reference output signal
is 10 MHz, that is the frequency of the OCXO.
SCPI command:
SENSe[:ROSCillator]:SOURce on page 452
2.3.5.2 Skew
Skew compensates signal propagation differences between channels caused by the dif-
ferent length of cables, probes, and other sources. Correct skew values are important for
accurate triggering and timing relations between channels.
Reference for Acquisition and Setup