4
ISOMET
Please refer to the Synthesizer manual for frequency, phase and amplitude control of the
input signals.
3.1
Connect cooling water at a flow of more than 1 litres/minute at < 20 deg.C to both the RF
amplifier and AO device. Due to the RF power dissipated in the AO modulator, it is paramount
that the device is operated only when water cooling is circulating. For optimum AO
performance, ensure the flow rate is greater than 1 litre /minute at < 20 deg.C.
3.2
With no d-c power applied, connect the + 24V (or +28V) DC in to the screw terminal.
DO NOT APPLY POWER.
3.3
Connect the RF output BNC jacks to the acousto-optic deflector (or a 50
Ω
RF load, if to
measure the modulator RF output power).
Connection order depends on the orientation as shown on page 12.
Relative phase delay depends on the input source.
3.3.1 Connect the RF input SMA jacks to the external frequency source outputs
(1mW max, 50
Ω
, each input).
3.3.2 Connect the Interlock of the acousto-optic device to the mating connector of the RF driver
(Binder 3pin snap connector).
The interlock connection becomes open circuit disabling the RF output, if the temperature of
the modulator exceeds 36ºC or the internal driver temperature exceeds 50ºC. The LED
indicator illuminates when the Interlocks are closed and the RF is enabled (see Section 2).
3.3.3 Connect the Control cable from J5 of the iMS4 to the 15-way high density D-Type input of the
RF amp. NOTE: If not using the iMS4, a GATE input is required (see Connection Summary
page 8)
