4
ISOMET
3.
INSTALLATION AND ADJUSTMENT
(See Figures 4 & 5)
3.2
With no d-c power applied, connect the + 24Vdc in to the center terminal of the feed-thru
terminal 1. DO NOT APPLY POWER.
3.3
Connect the RF output SMA jack to the SMA or BNC RF input of the acousto-optic deflector
(or a 50
RF load, if it is desired to measure the modulator RF output power).
3.4
Connect the amplitude control source to the the D-type connector.
Connect the modulation signal ( 0,0 - 10.0V) to pin 8
Connect the signal return (0V) to pin 3
To begin, apply a constant voltage of 10.0V.
3.5
Connect the external Interlock of the acousto-optic modulator (if fitted) to the enable inputs on
the 9-pin D-type connector. If no interlock is fitted then these inputs MUST be connected
together.
Connect pin 9 to the floating contact 1 of the interlock switch.
Connect pin 4 to floating contact 2 of the interlock switch. (Grounded at driver)
The interlock connection becomes open circuit disabling the RF output, if the temperature of
the modulator exceeds 30ºC or the internal driver temperature exceeds 70ºC. An LED
indicator illuminates when the Interlocks are closed and the RF is enabled.
3.6
If required apply a 12V CMOS compatible or open collector driver to the Digital Gate input.
Connect the tuning signal ( 12v maximum) to pin 7
Connect the signal return (0V) to pin 2
This input is optional and may be left NC (Not Connected).
A closed contact on this input will disable the RF Output. Switching response time 10msec.
3.7.
Connect the tuning voltage source to the the D-type connector
Connect the tuning signal ( 0,0 -10.0V) to pin1
Connect the signal return (0V) to pin 6
3.8
Adjustment of the RF output power is best done with amplifier connected to the acousto-optic
modulator
