Keysight x-series User Manual

4 System
4.6 Alignments
–
Off: Off (amber)
Status Bits/OPC
dependencies
When Auto Align is executing, Bit 0 in the Status Operational register is set
An interfering signal at the RF Input may prevent automatic alignment of the RF subsystem. If this
occurs, the Error Condition message “Align RF skipped” is reported, the Status Questionable
Calibration bit 11 is set, and the alignment proceeds. When a subsequent alignment of the RF
subsystem succeeds, either by the next cycle of automatic alignment or from an Align Now, RF, the
Error Condition and Status Questionable Calibration bit 11 are cleared
Backwards
Compatibility
SCPI
:CALibration:AUTO ALERt
Parameter ALERt is for backwards compatibility only, and is mapped to PARTial
Auto Align Options
The available settings for Auto Align are as follows:
Normal
SCPI example :CAL:AUTO ON
Auto Align, Normal turns on the automatic alignment of all measurement systems.
This selection maintains the instrument in warranted operation across varying
temperature and over time.
If the condition “Align Now All required” is set, transitioning to Auto Align, Normal
performs the required alignments, clears the “Align Now All required” condition,
then continues with further alignments as required to maintain the instrument
adequately aligned for warranted operation.
When Auto Align, Normal is selected, the Auto Align Off time is set to zero.
When Auto Align, Normal is selected, the Meas Bar indicates Align: Auto (in white)
or Align: Auto/No RF (in amber). The amber color reminds you that you are
responsible for maintaining the RF alignment of the instrument.
Alignment processing because of the transition to Normal is executed sequentially.
Thus, *OPC? or *WAI following :CAL:AUTO ON will return when the alignment
processing is complete.
Light
SCPI example :CAL:AUTO LIGH
Auto Align, Light turns on the automatic alignment of all measurement systems. The
Auto Align, Light selection allows more drift in amplitude accuracy to allow much
less frequent measurement interruptions to perform alignments. The temperature
changes required to trigger each alignment are increased by a factor of three.
Alignments also expire from time as well as temperature. In a stable thermal
Spectrum Analyzer Mode User's &Programmer's Reference 2104

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)