4
ISOMET
3.
INSTALLATION AND ADJUSTMENT
3.1
For continuous or duty cycled operation above >2%, always connect cooling water.
Flow rate greater than 2 litres / minute. Temperature < 20 deg.C
(Factory fitted water connections suit 8mm OD plastic tubing).
3.2
C24V DC to the screw terminals of the filtered DC connector. DO NOT APPLY
POWER. The DC supply should be capable of 40A
3.2
Connect the (4) RF output TNC jacks to the (4) RF inputs of the acousto-optic deflector (or a
50
RF high power load). The connection order depends on the AO Bragg orientation (see
Figure 4) and will be either 1
1, 2
2, 3
3, 4
4 or 1
4, 2
3, 3
2, 4
1. The deflector
will not be damaged if the order is incorrect but the efficiency will be non-uniform. The
amplifier outputs must be terminated.
The cable lengths from the amplifier to the RF connections of the deflector must be equal.
3.4
Connect the Interlock of the acousto-optic deflector (7-way circular connector) to the 7-way
connector J9 of the RFA1170/4. A suitable cable is supplied.
The interlock signal triggers a fault conditionif the temperature of the modulator or internal
driver temperature exceeds 30ºC. This will disable the RF outputs.
There are two LED indicators
1:
The bulkhead LED (above RF output J2) is bi-colour.
RED indicates 24Vdc is ON but the thermal interlocks and/or -ENABLE signal are
inactive.
Yellow indicates interlocks are OK and the -ENABLE signal is active.
RF will be output as soon as the iMS4-L is programmed and initiated.
2:
LED stack on the iMS4-Linterface PCB
A GREEN (or RED) LED will beat at 1Hz indicating that the interface control circuitry has
initialized correctly
DO NOT connect any of the interlock signal wires to chassis ground or 0V
.
