RF Driver MQH0XX-YYDM-ZZZ

The MQH0XX-YYDM-ZZZ high-power RF driver covers24–110 MHz, delivering up to100 W into50 Ω with analog and digital modulation. Designed for acousto-optic Q-switches, it provides stable, high-peak-power RF drive for pulsed lasers. Two digital inputs provide fixed-width and variable-width modulation. Analog input controls output power. The ZZZ ordering parameter selects A05 (standard analog control), R05 (analog control switched to full RF power), FPS (first-pulse suppression), or PPK (prepulse elimination). Frequency XX, output power YY, and control mode ZZZ are factory configured to order. Forced-air cooling supports high-power thermal management and long-term stability. Fixed-width mode uses a configurable internal pulse-width circuit; variable-width mode follows the input pulse directly for external synchronization. Applicable devices:acousto-optic modulators and water-cooled Q-switches. DC feedback is prohibited at the RF output. Optional factory-set modes table:FPS |First-Pulse Suppression;PPK |Prepulse Elimination;A05 |Analog Control;R05 |RF Switching to Analog Control;Dash |Digital Modulation Only. Interfaces:RF Output |BNC Female;Power |Vcc Solder Post;Return |Ground Terminal;Control |25-Pin Front-Panel D-Sub. 25-Pin D-Sub Definitions:Pin1 |+5V External Fault-Indicator Supply (75 mA);Pin12 |MOD IN ANALOG, Analog Input (A05/R05);Pins2-3 |NC;Pin13 |FAULT RESET, Active-Low;Pin4 |THERM RTN, Temperature-Control Return;Pin14 |FPS TRG Input;Pin5 |NC;Pin15 |MOD IN FIXED;Pin6 |THERM Input, Fault unless Shorted to Ground;Pin16 |MOD IN VARIABLE;Pin7 |DRV TEMP, High Normally and Low when Overheated;Pin17 |SYNC OUT;Pin8 |QS TEMP, Q-Switch Temperature Status;Pins18-19 |NC;Pin9 |HVSWR Fault;Pin20 |SHUTTER Output;Pin10 |LP Low-Power Indication;Pins21-24 |NC;Pin11 |HP High-Power Fault;Pin25 |GND. Indicators:Power |DC28 V On;Low Power |Below-Threshold Warning, Not a Latched Fault;High Power |Above-Threshold Protection;High VSWR |Excess Reflected-Power Protection;Q-Switch Temperature |Open Temperature-Control Circuit Fault;Driver Temperature |Overtemperature Protection at Internal Temperature≥60 ℃. Adjustments:RF Power |Adjust Output;Low-Power Threshold |Below this threshold the warning illuminates while output continues;it is a warning rather than a fault. High-Power Threshold |Above the maximum threshold output stops until reset. VSWR Threshold |Sets load-mismatch tolerance;detected mismatch stops output until reset. Pulse Width |Sets RF-off time after a trigger,1μs–14μs. The following does not apply to FPS or PPK configurations:Threshold |Sets the effective analog-input threshold;below it the analog signal is ignored and RF output disabled. The following does not apply to analog-input A05/R05 configurations:First-Pulse Initial Power |Adjusts the first RF pulse;First-Pulse Recovery Slope |Sets recovery to normal power after FPS,20 μs～300 μs;Suppression Window |Sets suppression duration,20 μs～300 μs. Ordering text labels this 'Output Frequency:Factory Set';YY =50 W or100 W (24/27/41/68 MHz);ZZZ =Mode, see options table.

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