High Power RF Driver: For Acousto-optic Q-Switch
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High Power RF Driver: For Acousto-optic Q-Switch MQH0XX-YYDS3-ZZZ Former Model Number: 390XX-YYDSZZZ-A The MQH0XX-YYDS3-ZZZ is a High Power RF Driver in a turnkey, air cooled rack mountable system box, designed to drive a Q-Switch. The driver has two digital modulation inputs: Fixed and Variable. These controls allow the customer to issue a pulse command of a "Fixed" pulse width, the duration determined by the Driver's pulse width control, settable by the customer, or issue a "Variable" pulse command, the duration determined by the input signal’s pulse width. The output power is controlled by the analog input, where the mode of operation is defined by ZZZ = A05 normal analog mode, or R05 analog switched to full RF mode or a triggered RF Ramp Down mode where ZZZ = FPS first pulse suppression mode or PPK pre-pulse kill mode. The choices of Frequency (XX), Output Power (YY), and Power Control (ZZZ) option are "Factory Set" when ordered. 24, 27.12, 40.68, 68, or 80 MHz RF Frequency (XX) 0.01% Quartz Stabilized Up to 100* watts RF power output (YY) Two TTL Digital Modulation Inputs: fixed and variable pulse width. Up to 100 kHz pulse rate. Analogue Modulation or Triggered RF Ramp Down Mode (ZZZ) Fault Protection on Low Power, High Power, and High VSWR Operates on 100 to 240 VAC 50/60 Hz RF Driver for an Acousto-Optic Q-Switch Device used to spoil the “Q” of a CW laser so as to output an intense pulse of light. Used in industrial, medical, or military applications. The product delivered will be manufactured to be compliant with EU Directive 2002/95/EC for Reduction of Hazardous Substance. The product will be manufactured to other standards upon customer request. For More Information, Contact: sales@goochandhousego.com www.goochandhousego.com As part of our policy of continuous product improvement we reserve the right to change specifications at any time.

Output Frequency "Factory Set When Ordered": Spurious Levels: Harmonic Distortion Digital Modulation Inputs: Fixed Mod In: Variable Mod In: TTL Levels, Triggered on TTL Rising Edge. Pulse Width Applied >50 ns. TTL Levels, TTL HIGH = RF Off Extinction Ratio: RF Rise Time 10% to 90% Modulation Repetition Rates: 1 Hz to 100 kHz for Fixed Modulation DC to 100 kHz for Variable Modulation Fixed Modulation Output Pulse Width Adjustment Range: 1 to 14 µs, Customer Adjustable Available Pulse Control Options: Pulse Control Mode "Factory Set When Ordered": ZZZ = Mode FPS = First Pulse Suppression See...

Located on Back Panel. CONNECTORS & MECHANICAL: RF Output Connector: Modulation Input Connectors: Thermostat connection to Q-Switch Shutter Connector: Power Connector: 3 pin IEC Panel Mount EMI Filtered Located on Front Panel. FAULT INDICATORS: Low Power Faults after 0.3 second, power below LP Set Point. Resets on power adjusted above Set Point. High Power Faults when power above HP Set Point. Reset required after removing fault. Over Temp Faults on open Thermostat. Resets on closed Thermostat. (Q-Switch below set temperature) High VSWR Faults when reflected power above VSWR Set Point....

Mechanical Dimensions: Dimensions in inches and [mm] Figure 1

Control Diagrams Figure 2 390XX-YYDSFPS-A (HIGH POWER) First Pulse Suppression Control Connection and Control Diagrams A B

390XX-YYDSPPK-A (HIGH POWER) Pre-Pulse Kill Control Connection and Control Diagrams

390XX-YYDSA05-A (HIGH POWER) Analog 5 Volt Control Connection and Control Diagrams

390XX-YYDSR05-A (HIGH POWER) RF Switched to Analog 5 Volt Control Connection and Control Diagram

390XX-YYDS-A (HIGH POWER) Digital Control Only Connection and Control Diagram NC

Ordering Codes: Example: MQH027-100DS3-A05 A 27 MHz RF Driver with two TTL Digital Modulation inputs (fixed and variable pulse width) and an analog input (A05) which enables control of the RF output power. Designed to drive an AO Q-Switch requiring 100 watts RF Power or less. Delivered as a RoHS compliant, air cooled, rack mountable system box. Optional Optional company information If customized (2 letters + number) Code – Standard Control Options A05 – Analog 0 to +5 V Power Control R05 – Analog 0 to +5 V Power Control - Switched FPS – First Pulse Suppression PPK – Pre Pulse Kill No Code...