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23-3
Timebase Commands
PRECision
This command sets the time interval between the trigger event and the delay reference point.
The delay reference point is set with the TIMebase:REFerence command. <position_value>
The maximum value depends on the time/division setting. The value can optionally have units
of bits or seconds, refer to Table 1-8 on page 1-25 to view the suffix units. If no units are spec-
ified, <position_value> has the units of the current units setting.
NOTE In Jitter Mode, scale and position controls are disabled. Do not use this command in Jitter Mode. It generates a
“Settings conflict” error.
NOTE In TDR/TDT mode, please note that the delay reference point is set to coincide with the reference plane position.
Query :TIMebase:POSition? [{BITS | TIME}]
The query returns the current delay value in seconds.
BITS bits/screen at bit rate
TIME seconds/division
Returned Format [:TIMebase:POSition] <position_value><NL>
Examples 10 OUTPUT 707;":TIMEBASE:POSITION 2E-3"
PRECision
NOTE The Precision Timebase feature requires the installation of the Agilent 86107A Precision Timebase Module.
Command :TIMebase:PRECision {ON|OFF}
This command enables and disables the precision timebase. Enabling the precision timebase
will also set the time reference. Disabling the precision timebase invalidates the time refer-
ence.
Query :TIMebase:PRECision?
This query returns the state of the precision timebase.
Returned Format [:TIMebase:PRECision?] {0 | 1}<NL>
Examples 10 OUTPUT 707;":TIMEBASE:PRECISION ON"
PRECision:RFRequency
NOTE The Precision Timebase feature requires the installation of the Agilent 86107A Precision Timebase Module.
Command :TIMebase:PRECision:RFRequency <frequency>
This command specifies the frequency of the reference clock at the input of the 86107A.
<frequency> is dependent upon the 86107A option number (9.0 GHz to 12.6 GHz and 18.0
GHz to 25.0 GHz for option 020 or, additionally, 38.0 GHz to 43.0 GHz for option 040).
Query :TIMebase:PRECision:RFRequency?
This query returns the user specified frequency of the reference clock.
Returned Format [:TIMebase:PRECision:RFRequency?] <frequency><NL>
Examples 10 OUTPUT 707;":SYSTEM:HEADER OFF"
20 OUTPUT 707;":TIMEBASE:PRECISION:RFREQUENCY?"