Racal Instruments 2461 User Manual page 43

Theory Of Operation 3-16
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
make the measurement. The choices are:
Clock 10 (VXI source)
External (via front panel STD IN port)
Internal (from the optional internally fitted
reference oscillator)
GATE OUTPUT
The measurement gate pulse can be made available (user
selectable) at any one of the VXI trigger lines TTL0-7.
INTERNAL FREQUENCY REFERENCE ADJUSTER
The optional internal frequency reference oscillator can be
adjusted by means of the front panel control marked OSC.
2461Type C User Manual
Racal Instruments  1998