Filter
Top Products
948
Input/Output
Ext Ref Freq
This key tells the test set the frequency of the external reference. When the external reference is in use
(either because the reference has been switched to External or because the Reference has been switched
to Sense and there is a valid external reference present) this information is used by the test set to
determine the internal settings needed to lock to that particular external reference signal.
For the instrument to stay locked, the value entered must be within 5 ppm of the actual external reference
frequency. So it is important to get it close, or you risk an unlock condition.
Note that this value only affects the instrument’s ability to lock. It does not affect any calculations or
measurement results. See "Freq Offset" in the Frequency section for information on how to offset
frequency values.
RF Output & Test Set Config
This menu and all of its submenus are only available in the EXT (E6607A/B/C).
Access the menu to select the front-panel RF output port to be the test set signal outputput. If RF is
Key Path: Input/Output, Freq Ref In
Remote Command: [:SENSe]:ROSCillator:EXTernal:FREQuency <freq>
[:SENSe]:ROSCillator:EXTernal:FREQuency?
Example: ROSC:EXT:FREQ 20 MHz sets the external reference frequency to 20 MHz,
but does not select the external reference.
ROSC:SOUR:TYPE EXT selects the external reference.
Notes: Still available with Internal selected, to allow setup for when External is in
use.
Preset: This is unaffected by a Preset but is set to 10 MHz on a "Restore Input/Output
Defaults" or "Restore System Defaults->All"
Min: CXA: 10 MHz
EXA: 10 MHz or 13 MHz, depending on whether N9010A-R13 is licensed
MXA: 1 MHz
PXA: 1 MHz
1 MHz
Max: CXA: 10 MHz
EXA: 10 MHz
MXA: 50 MHz
PXA: 50 MHz
50 MHz
Default Unit: Hz
Initial S/W Revision: Prior to A.02.00