HS9000B Series Manual 1.04
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Page 59 of 65
Reference Distribution Module Commands
:REF:INT:100MHz
Set internal 100MHz reference
Example
TX:
:REF:INT:100MHz
RX:
Reference Set to 100MHz Internal, PLL Disabled
:REF:EXT:10MHz
Set external 10MHz reference
Example
TX:
:REF:EXT:10MHz
RX:
Reference Set to 10MHz External, PLL Enabled
:REF:EXT:100MHz
Set external 100MHz reference
Example
TX:
:REF:EXT:100MHz
RX:
Reference Set to 100MHz External, Internal 100MHz Disabled
:REF:STATUS?
Query reference status
Example
TX:
:REF:STATUS?
RX:
Internal 100MHz <or> External 10MHz <or> External 100MHz
:REF:PLL?
Query PLL Lock Status
Example
TX:
:REF:PLL?
RX:
1 PLL Locked <or> 0 PLL Unlocked <or>
0 PLL Disabled, External 100MHz <or>
0 PLL Disabled, Internal 100MHz
When using an external 10MHz reference, the response will be
„1 PLL Locked‟
or
„0
PLL Unlocked
‟