R&S AFQ100A Operating Manual page 146

R&S AFQ100A
Source - Reference
Clock
Delay (ns) - Bandwidth
Reference Clock
Synchronization
Bandwidth - Reference
Clock
1401.3084.32
Selects the reference clock source.
Note:
The Internal Reference Clock Source is available only in the
reference clock synchronization modes Normal and Master. If the
instrument is set to Slave or Last slave mode the reference clock
source is set to External. The entry field is not displayed in the
Clock dialog.
A sample clock is supplied internally.
Internal
Remote-control command:
SOUR:ROSC:SOUR INT
The clock signal is fed in externally via the BNC
External
connector REF IN at the rear panel of the instrument.
Remote-control command:
SOUR:ROSC:SOUR EXT
Sets a time shift (delay) to the reference clock signal for adjusting the
clocks in the slaves.
Recommended range: 0...5 ns.
Remote-control command:
SOUR:ROSC:DEL 2.5
Note:
The synchronization of several connected R&S AFQ
I/Q Modulation Generators requires the Baseboard Revision 8 or
higher. Up to baseboard Revision 5 only synchronization mode
normal is provided (stand-alone mode).
(Reference clock external only)
Enters the synchronization bandwidth, i.e. the target range of the
synchronization circuit. The synchronization bandwidth is indicated
only when an external reference clock source is selected.
A narrow synchronization bandwidth is selected, the
Narrow
synchronization circuit works slowly.
Remote-control command:
SOUR:ROSC:EXT:SBAN NARR
A wide synchronization bandwidth is selected, the
Wide
synchronization circuit works fast.
Remote-control command:
SOUR:ROSC:EXT:SBAN WIDE
4.35
Baseband Block
E-3