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Stanford Research SRS DG535 Digital Delay/Pulse Generator with GPIB and Option 02 Key Features: -Four delay channels -Two pulse channels -5 ps delay resolution -< 100 ps rms jitter -Adjustable amplitude & offset -Delays up to 1000 seconds -Standard GPIB interface Description: The DG535 Digital Delay and Pulse Generator provides four precisely-timed logic transitions or two independent pulse outputs. The delay resolution on all channels is 5 ps, and the channel-to-channel jitter is typically 50 ps. Front-panel BNC outputs deliver TTL, ECL, NIM or variable level (-3 to +4 V) pulses into 50 Ω or high impedance loads. The high accuracy, low jitter, and wide delay range make the DG535 ideal for laser timing systems, automated testing, and precision pulse applications.

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The Unit's Serial Number Tag Reads: Model Number: DG535 Serial Number: 01982 Options: 01, 02 Option Information: Option 01: GPIB Interface Option 02: Rear Panel Outputs Specifications: Delays: Channels: Four independent delay outputs Range: 0 to 999.999,999,999,995 seconds Resolution: 5 ps Accuracy: 1500 ps + timebase error x delay Timebase: 25 ppm crystal oscillator RMS Jitter: < 100 ps + (10-8 x delay) Trigger Delay: 85 ns typical (ext. trigger to T0 output) External Trigger: Rate: DC to 1/(1 µs + longest delay) Threshold: ±2.56 VDC Resolution: 10 mV Internal Rate Generator: Rate: Single shot, 0.001 Hz to 1.000 MHz, or Line Resolution: Four digits, 0.001 Hz below 10 Hz Accuracy: Same as timebase Jitter: 1:10,000 Settling: < 2 seconds for any rate change Burst mode: 2 to 32766 pulses per burst at integer multiples (4 to 32767) of the trigger period Outputs: Load: 50 Ω or high impedance Rise Time: 2 to 3 ns (typ.) Slew Rate: 1 V/ns Overshoot: < 100 mV + 10% of pulse amplitude Levels: TTL: 0 to 4 VDC (normal or inverted) ECL: -1.8 to -0.8 VDC (normal or inverted) NIM: -0.8 to 0.0 VDC (normal or inverted) VAR: Adjustable offset and amplitude between -3 and +4 VDC with 10 mV resolution. 4 V maximum transition. Accuracy: ±(50 mV + 3% of pulse amplitude) General: Display: Backlit 20-character LCD Computer Interface: GPIB (IEEE-488). ALl instrument functions and settings may be controlled over the interface bus. Interface queue can be viewed from the front panel. Dimensions: 8.5" W x 4.75" H x 14" L Weight: 10 lbs. Power: 70 W, 100/120/220/240 VAC, 50/60 Hz