Chapter 4 Command Reference
[:SENSe]:FUNCtion Subtree
4-30
Programming Guide
4
[:SENSe]:ROSCillator Subtree
This subtree controls the Reference Oscillator.
COMMAND
[:SENSe]:ROSCillator:SOURce . . . <character_program_data>
Sets or queries the current reference timebase to INTernal or EXTernal.
QUERY RESPONSE
A sequence of ASCII-encoded bytes: INT or EXT
COMMENTS
•
*RST: INT
•
INTernal indicates the timebase is the internal reference. EXTernal
indicates the signal at the external reference input (located on the
rear panel of the Counter;
Reference
connector) is the reference
timebase.
•
The Counter does not switch to EXTernal unless a suitable 1, 2, 5, or
10 MHz signal is present on the “Reference” connector on the back panel.
•
Execution of the command (that is, explicitly selecting internal or
external timebase) sets [:SENS]:ROSC:SOUR:AUTO to OFF.
•
If this is set toEXT, and no valid external signal is available at the
back-panel Reference connector, the front-panel frequency display
may show an error message.
•
If this is set to INT, the 10 MHz signal generated by the internal
reference oscillator is available as an output on the back-panel
Reference connector.
RELATED
FRONT-PANEL
KEYS
Shift + Menu (REF OSC > INT | EXT)
Summary of Contents for 53150A Series
Page 1: ... Programming Guide HP 53150A 151A 152A Microwave Frequency Counter ...
Page 2: ......
Page 10: ...Contents x Programming Guide ...
Page 11: ...1 Before You Start ...
Page 20: ...Chapter 1 Before You Start Related Documentation 1 10 Programming Guide 1 ...
Page 21: ...2 Command Summary A Quick Reference ...
Page 41: ...3 Programming Your Counter for Remote Operation ...
Page 101: ...4 Command Reference A Dictionary ...
Page 162: ...Chapter 4 Command Reference Common Commands 4 62 Programming Guide 4 ...
Page 163: ...5 Errors ...
Page 174: ...Chapter 5 Errors Error Types 5 12 Programming Guide 5 ...
Page 184: ......
Page 186: ... Manual Part Number 53150 90002 Printed in U S A NOVEMBER 1997 ...