Download
Share
Print this page
  1. Manuals
  2. Brands
  3. ISOMET Manuals
  4. Amplifier
  5. RFA1160/4 Series
  6. Instruction manual

ISOMET RFA1160/4 Series Instruction Manual

Rf amplifier
Hide thumbs

Advertisement

Quick Links

Download this manual
Jan 14
RF Amplifier
Including: Basic Deflector Alignment
Instruction Manual
RFA1160/4 Series
Models -
RFA1160/4
RFA1160/4-PO
RFA1160/4-ZP
RFA1160/4-ZP-PO
Tel: (703) 321 8301, Fax: (703) 321 8546, e-mail:
ISOMET (UK) Ltd, 18 Llantarnam Park, Cwmbran, Torfaen, NP44 3AX, UK.
Tel: +44 1633-872721, Fax: +44 1633 874678, e-mail:
: 50-90 MHz, Four channel 280W total RF output
: 55-105MHz, > 240W total RF output. Optimized for Duty cycle apps
Caution: refer to notes page 7
: 55-105MHz, > 240W total RF output (Zero Phase shift)
: 55-105MHz, > 240W total RF output. Optimized for Duty cycle apps
Caution: refer to notes page 7
DO NOT OPERATE
the RFA1160/4 types
LS600-1100 type AO DEVICES *
WITHOUT COOLING
* (refer AO data sheet)
ISOMET CORP, 5263 Port Royal Rd, Springfield, VA 22151, USA.
www.ISOMET.com
ISOMET
or
isomet@isomet.com
isomet@isomet.co.uk
(Zero Phase shift)
May 09

Advertisement

loading
Need help?

Need help?

Do you have a question about the RFA1160/4 Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for ISOMET RFA1160/4 Series

Summary of Contents for ISOMET RFA1160/4 Series

  • Page 1 ISOMET CORP, 5263 Port Royal Rd, Springfield, VA 22151, USA. Tel: (703) 321 8301, Fax: (703) 321 8546, e-mail: isomet@isomet.com www.ISOMET.com ISOMET (UK) Ltd, 18 Llantarnam Park, Cwmbran, Torfaen, NP44 3AX, UK. Tel: +44 1633-872721, Fax: +44 1633 874678, e-mail: isomet@isomet.co.uk May 09...
  • Page 2 ISOMET GENERAL The Model RFA1160/4 is a class AB amplifier designed to drive the LS600- series of Isomet High Power Germanium Acousto-Optic Deflectors with up to 280Watts across a 50-90 MHz bandwidth. The standard RFA1160/4 exhibits progressive phase shifting across four RF output channels. Phase shifting is the basis of the beam-steering technique used in Isomet wideband AO deflectors.
  • Page 3 ISOMET Figure 2 is a block diagram of the Driver. A pre-amplifier stage amplifiers and divides the input signal (Input= 0dBm nominal). Outputs J1 and J2 respond to the input on J7 Outputs J3 and J4 respond to the input on J8 The RF_gate signal on J6 is common to all four outputs.

  • Page 4: Installation And Adjustment

    ISOMET INSTALLATION AND ADJUSTMENT For continuous of high duty cycle operation connect cooling water at a flow rate not less than 0.25 litres/minute at less than 25 deg.C (Water connections are provided to suit 8mm OD plastic tubing.) With no d-c power applied, connect the + 24V DC in to the center terminals of the feed-thru DC inputs.
  • Page 5 ISOMET Connect the input frequency source 1 to RF1, SMA input connector J7. Connect the input frequency source 2 to RF2, SMA input connector J8. The frequency source should be capable of 1mW drive into 50 ohms . Note: For the RFA1160/4-ZP and –ZP-PO use the RF splitter provided to connect both RF1 and RF2 to a common source.
  • Page 6 ISOMET RF power is adjusted at the signal source to the RFA1160/4 e.g. iHHS-2 amplitude setting. Set the power to a low value e.g. 0.2mW 3.10 Apply + 24V DC to the amplifier. Ensure the cooling water is on. 3.12 Input a constant 70MHz (80MHz) input signal to the RFA1160/4 (RFA1160/4-ZP).
  • Page 7 ISOMET Note: RFA1160/4-(ZP)-PO versions must not be operated CW for extended periods. This version includes Thermistor protection that will reduce the transistor gain as the dissipation increases. The optimum Duty cycles range is 10-20% Duty cycle MUST BE controlled via the RF_gate input to J6. Duty cycling the RF input only is insufficient.

  • Page 8: Maintenance

    ISOMET MAINTENANCE 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.
  • Page 9 ISOMET Schematic of Acousto-optic scanner and drive electronics. Tuning Voltage Modulation θ scan RFA321 dual output phase delayed amplifier θ 1208-6BS Laser Beam θ bragg The input bragg angle, relative to a normal to the optical surface and in the plane of deflection is: θ...

  • Page 10: Connection Summary

    ISOMET Connection Summary Mounting Holes 6mm diameter (4 places) G1/8 Coolant Fittings to suit 6mm O/D pipe ( 2places) Dim'm: mm Connector Summary TNC, RF Output Ch1 TNC, RF Output Ch2 TNC, RF Output Ch3 TNC, RF Output Ch4 3-way Circular Panel Socket, Binder 680 (+/-12Vdc Auxiliary Supply Output) 25-way Filtered D-type Connector ( Amp GATE, VSWR Ch1, Ch2, Ch3, Ch4;...
  • Page 11 ISOMET +24Vdc / 12A (Upper) J1 Output PA Transistor Pre-Amp Input J2 Output - Gate Input PA Transistor +24Vdc 12A (Lower) J3 Output PA Transistor Pre-Amp Input J4 Output - Gate Input PA Transistor Figure 2: Driver Block Diagram...
  • Page 12 ISOMET Signal Signal Type Description Connector Label Designation RF_Out1 Output 0-60W RF output at specified freq. 50 ohm RF_Out2 Output 0-60W Phase modified RF output at 50 ohm specified freq. RF_Out3 Output 0-60W Phase modified RF output at 50 ohm specified freq.
  • Page 13 ISOMET Connection options for Beam Steered AO Deflectors Input Amplifier Increasing Phase Increasing Phase Delay Delay Input Amplifier Increasing Phase Delay Correct orientation as viewed from top of AOD (Connector identification may differ) Amplifier Increasing Phase Delay Input Amplifier Increasing Phase...

This manual is also suitable for:

Rfa1160-4Rfa1160-4-zpRfa1160-4-(zp)-po