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ISOMET 

 

  4. 

MAINTENANCE 

 

4.1 

AO Device - Cleaning 

It is of utmost importance that the optical apertures of the deflector optical head be kept clean 

and free of contamination.  When the device is not in use, the apertures may be protected by 

a covering of masking tape.  When in use, frequently clean the apertures with a pressurized 

jet of filtered, dry air. 

 

It will probably be necessary in time to wipe the coated window surfaces of atmospherically 

deposited films.  Although the coatings are hard and durable, care must be taken to avoid 

gouging of the surface and residue of the cleaning solution.  It is suggested that the coatings 

be wiped with a soft ball of brushed (short fibres removed) cotton, slightly moistened with 

clean alcohol.  Before the alcohol has had time to dry on the surface, wipe again with dry 

cotton in a smooth, continuous stroke.  Examine the surface for residue and, if necessary, 

repeat the cleaning. 

 

4.2 

Troubleshooting 

No troubleshooting procedures are proposed other than a check of alignment and operating 

procedure.  If difficulties arise, take note of the symptoms and contact the manufacturer. 

 

4.3 

Repairs 

In the event of deflector malfunction, discontinue operation and immediately contact the 

manufacturer or his representative.  Due to the high sensitive of tuning procedures and the 

possible damage which may result, no user repairs are allowed.  Evidence that an attempt 

has been made to open the optical head will void the manufacturer's warranty. 

Summary of Contents for RFA1170-4+iMS4-L

Page 1: ...OT OPERATE the RFA1170 4 types or LS700 type AO DEVICES WITHOUT LIQUID COOLING Always refer to the AO test data sheet ISOMET CORP 5263 Port Royal Rd Springfield VA 22151 USA Tel 703 321 8301 Fax 703 3...

Page 2: ...r to the AO device data sheet The RFA1170 4 iMS4 L combo includes a number of features to aid monitoring and control Temperature monitoring and thermal Interlock for the Amplifier and associated AO de...

Page 3: ...puts Each channel features a class A B power stage to generate the final output level of up to 90W per output Water cooling is required The heatsink temperature must not exceed 70 C SERIOUS DAMAGE TO...

Page 4: ...erminated 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 conne...

Page 5: ...n excess of this optimum level will cause a decrease in first order intensity a false indication of insufficient RF power and makes accurate Bragg alignment difficult It is therefore recommended that...

Page 6: ...lue ISAT Typical values Class Method description Setting UpdateDDSPowerLevel 80 UpdateRFAmplitude Wiper 60 3 15 To equalise deflection efficiency across the extremes of the scan alternate between the...

Page 7: ...tive RF output The Enable may remain LOW continuously The RF amplifiers are design to be biased at 100 duty factor T_DLY 1 8msec Pulsed Response All versions of the RA1170 4 are designed for fast puls...

Page 8: ...ed with a soft ball of brushed short fibres removed cotton slightly moistened with clean alcohol Before the alcohol has had time to dry on the surface wipe again with dry cotton in a smooth continuous...

Page 9: ...the optical surface and in the plane of deflection is Bragg fc 2 v The separation angle between the zeroth order and mid scan point of the first order is sep fc v The first order scan angle is scan f...

Page 10: ...CLK TRG USB II Outline Connector Summary J1 TNC RF Output Ch1 J2 TNC RF Output Ch2 J3 TNC RF Output Ch3 J4 TNC RF Output Ch4 INT 7 way Circular Panel Plug Binder 712 AOD Temp and isolated Interlock I...

Page 11: ...5 2 1 4 1 o H iD B 37 1 1 6 3 3 4 4 1 5 3 0 P AS ta g e T N C J1 O u tp u t P re A m p G a inS e t F P G A G a te T N C J2 O u tp u t T N C J3 O u tp u t T N C J4 O u tp u t D D S M C X M C X iM S 4 L...

Page 12: ...Vdc 40A LED indicators 2 off 1 The bulkhead dual colour LED fitted above RF output J2 RED indicates 24Vdc is ON but one or more of the following conditions exist Interlock failure over temp ENABLE sig...

Page 13: ...ay differ Connection options for Beam Steered AO Deflectors Amplifier Amplifier Amplifier RF1 RF4 J1 J3 J2 J4 J1 J3 J2 J4 Increasing Phase Delay Increasing Phase Delay J1 J3 J2 J4 Increasing Phase Del...

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