QSD Series Acousto-Optic Q-Switch Power Supplies (Q Drivers) QSD2775

Operating Frequency: 80–350 MHz Power Supply Voltage: +24 VDC or +28 VDC Output Impedance: 50 Ω

The 3307 series high-frequency RF driver is a high-performance, versatile, highly stable drive platform for acousto-optic devices, including FiberQ and acousto-optic frequency shifters. It covers 80–350 MHz, delivers 4 W RF output into a 50 Ω load, and supports analog and digital modulation. Modulation frequencies can reach 25% of the carrier frequency, with a maximum of 50 MHz on models with higher carrier frequencies. It meets high-speed acousto-optic modulation needs in laser processing, beam scanning, laser displays, optical communications, and research systems. An aluminum-alloy shielding enclosure provides excellent electromagnetic compatibility (EMC) shielding and mechanical protection; the baseplate provides mounting and conductive heat dissipation. Options include frequency tuning, automatic level control (ALC), and an external power amplifier that can boost output to 20 W. Applicable devices: FiberQ and acousto-optic frequency shifters.

Power Supply Voltage [Factory-set]: +12 VDC、+15 VDC or +24 VDC（ Factory-set ） Power Supply Current: ≤3 A RF Output Power [50 Ω Load]: 2～24 W

The QC series is a compact low-power RF driver for AOMs and acousto-optic Q-switches, covering24–110 MHz with up to24 W into50 Ω. Digital modulation, analog power control, zero-crossing synchronization, and configurable output power meet industrial, research, and OEM needs. Contact conduction cooling, compact construction, configurable modes, and integrated modulation provide reliability, heat dissipation, and easy integration in space-limited lasers and optoelectronics. Two TTL digital inputs support fixed-width pulses set internally or variable-width pulses controlled externally. Analog input continuously adjusts RF power. Factory-configurable modes include analog power control, switched analog control, first-pulse suppression, and prepulse elimination to improve laser output and control. Zero-crossing synchronization aligns RF pulses with RF zero crossings to reduce pulse jitter and improve repeatability and stability in timing-sensitive lasers. QC drives Q-switches for stable pulsed-laser generation and AOMs for pulse picking, high-speed intensity modulation, and precision control in industrial and ultrafast lasers, precision processing, research, and optoelectronics. Applicable devices:acousto-optic modulators and air-cooled Q-switches. ¹Voltage range corresponds to0%–100% of preset maximum RF power and applies to acousto-optic devices configured with A05,R05,and M05. ²Into50 Ω. ³ZC enables zero-crossing by default. Status LEDs:Red |Normal Operation;Green |Standby;Yellow |Fault. Mating plug:Molex0430251200 with Molex0430300008 crimp terminals. Heat-sink capacity required:36 W@12 V,45 W@15 V,72 W@24 V. Power/control connector:12 pins,3.00 mm (0.118") pitch. Unless stated otherwise, inputs reference GND; outputs are open-collector with maximum sink current25 mA. Pin1 |SYNC Output;Pin2 |FPS Trigger Input;Pin3 |Fixed-Width Modulation Input;Pin4 |GND;Pin5 |Variable-Width Modulation Input;Pin6 |Analog Modulation Input;Pin7 |Zero-Crossing Synchronization Enable;Pin8 |Low-Power Fault Output;Pin9 |High-Power Fault Output;Pin10 |High-VSWR Fault Output;Pin11 |Enable Input;Pin12 |VDC Supply Input. Absolute Maximum Ratings Note:exceeding limits may cause instantaneous, irreversible damage; DC feedback at the RF output is prohibited. Adjustments:RF Power Level |Clockwise increases output power. Low-Power Threshold |Below the minimum threshold, LP Fault goes low.* High-Power Threshold |Above the maximum threshold, HP Fault goes low. High-VSWR Protection Threshold |Sets load-mismatch tolerance; mismatch drives the fault low, turns the LED yellow, and stops output; enter standby and resume to reset. Fixed Pulse Width |Adjusts RF-off duration over1～20 μs. FPS/PPK-Only Adjustments:FPS Initial Power |Sets first-pulse output;FPS Slope |Sets recovery to normal RF power after FPS starts,20～300 μs;FPS Window |Sets suppression duration,20～300 μs. *Analog RF-power modulation automatically masks LP Fault. Ordering:XXX =024,027,041,068,080,or110 as standard, corresponding to RF frequencies24.00,27.12,40.68,68.00,80.00,or110.00 MHz.

Operating Frequency: 24 MHz、27.12 MHz、40.68 MHz、68 MHz、80 MHz Number of Channels: 2 Channels (Both RF Outputs Distributed from the Same Oscillator) RF Frequency: 24.00,27.12,40.68,68.00,80.00 MHz, Frequency Stability±0.01%

The MQH0XX-YYDM-ZZZ-2S is a dual-channel high-power RF driver covering24–110 MHz, providing dual-channel RF output up to100 W into50 Ω with analog and digital modulation. Designed for acousto-optic Q-switches, it provides stable, reliable drive for high-power pulsed lasers. Two digital inputs support fixed-width and variable-width modes. Analog input adjusts RF power. ZZZ selects A05 (standard analog control), R05 (analog control switched to full RF output), FPS (first-pulse suppression), or PPK (prepulse elimination). Frequency XX, power YY, and control mode ZZZ are factory configured to order. Forced-air cooling supports continuous high-power operation and long-term reliability. Fixed-width pulses are set by an adjustable internal circuit; variable-width pulses follow the external input for synchronization. Applicable devices:dual-head water-cooled Q-switches. Both RF outputs must be connected to50 Ω loads. 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. Front-Panel25-Pin D-Sub:Pin1 |+5V External Fault-Indicator Supply, Maximum75 mA;Pin12 |MOD IN ANALOG (A05/R05);Pins2-3 |NC;Pin13 |FAULT RESET, Low Pulse to Reset, Must Not Be Held Low;Pin4 |THERM RTN, Common Return for THERM and THERM2;Pin14 |FPS TRG, Rising Edge;Pin5 |THERM2, Fault unless Grounded;Pin15 |MOD IN FIXED, RF Off for Set Width;Pin6 |THERM, Fault unless Grounded;Pin16 |MOD IN VARIABLE, RF Off while High;Pin7 |DRV TEMP, Normally High, Low when Overheated;Pin17 |SYNC OUT;Pin8 |QS TEMP, Low when THERM Is Not Grounded;Pins18-19 |NC;Pin9 |HVSWR, Normally High, Low on Fault;Pin20 |SHUTTER, Opens0.3 s after Fault, Maximum Sink1 A @28 V;Pin10 |LP, Low below Low-Power Threshold;Pins21-24 |NC;Pin11 |HP, Normally High, Low on Fault;Pin25 |GND. Front-Panel Indicators:Power |DC28 V On;Low Power |Warning after0.3 s below LP Threshold, Clears Automatically above Threshold;High Power |Fault above HP Threshold, Reset Required after Fault Removal;High VSWR |Fault above Reflected-Power Threshold, Reset Required after Fault Removal;Q-Switch Temperature |Open-Circuit Fault, Clears when Temperature Circuit Closes below Set Temperature;Driver Temperature |Overtemperature Protection at60 ℃, Recovers after Cooling. Adjustments:RF Power |Adjust Output;Low-Power Threshold |Below it the indicator illuminates while RF continues, as a warning without protective shutdown. High-Power Threshold |Stops Output above Threshold until Fault Reset. VSWR Threshold |Stops Output on Excess Reflection from Mismatch, Reset Required after Fault Removal. Pulse Width |Fixed-Modulation RF-Off Time,1～14 μs. The following does not apply to FPS/PPK configurations:Threshold |Below the effective analog-input threshold, the analog signal is ignored and RF output disabled. The following does not apply to analog-input A05/R05 configurations:First-Pulse Initial Power |Sets Initial RF Pulse;Recovery Slope |Sets Return to Normal Power after FPS,20 μs～300 μs;Suppression Window |20 μs～300 μs. Maximum-Ratings Note:DC feedback is prohibited at RF output. Ordering text labels this 'Output Frequency:Factory Set';YY =50 W (24/27/41 MHz), Adjustable Range12–25 W;ZZZ =Mode, see options table.

RF Output Power [Total Output Power;50 Ω Load]: 3.2 W (Total Output Power) Operating Frequency: 20–160 MHz Frequency Resolution [Actual0.0931 Hz;Nearest Target Frequency Selected Automatically (Note1)]: 0.1 Hz

The 97-03926-14 is a high-performance multi-channel RF driver covering 20–160 MHz, delivering total power of 3.2 W into a 50 Ω load and supporting analog and digital modulation. Designed for reliability and versatility, it drives acousto-optic deflectors (AODs) and tunable filters (AOTFs) under optimal conditions for high-speed multi-channel beam control. Its programmable-frequency 8-channel DDS (direct digital synthesis) architecture provides independent frequency offsets and linear amplitude modulation per channel. Total RF output is 3.2 W, with 0.4 W per channel. Continuous tuning over 20–160 MHz and comprehensive fault protection safeguard AOM/AOD/AOTF devices and improve system stability and reliability. Contact the company for driver selection and technical support suited to specific devices or applications. Applicable devices:acousto-optic deflectors and tunable filters. Technical notes:actual frequency resolution is 0.0931 Hz; the system automatically selects the nearest frequency. Frequency preloading typically takes 1～8 μs. Each frequency datum contains a 32-bit frequency-control word and requires simultaneous loading of the starting RAM address. Switching-time specifications apply to direct switching among three preset frequencies. Modulation bandwidth is measured at -3 dB with DC coupling. Dynamic range applies over 20～160 MHz. Intermodulation is measured with two tones at 100 MHz and105 MHz, each at125 mW. Signal-to-noise ratio is measured in a 1 MHz bandwidth with a125 mW reference output. See outline drawing97-03926-12-15 for dimensions and mounting.

Operating Frequency: 24 MHz、27.12 MHz、40.68 MHz、68 MHz、80 MHz RF Frequency: 24.00、27.12、40.68、68.00、80.00 MHz（±0.01%） Spurious Level: ≤ -50 dBc

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.