| 類型 | 4通道數字延遲/脈沖發生器 | 品牌 | 美國SRS |
| 型號 | DG535 | 外形尺寸 | 8.5× 4.75× 14（mm） |
| 重量 | 10（kg） |
| Specifications | ||||
| Delays | ||||
| Channels | Four independent delay outputs | |||
| Range | 0 to 999.999,999,999,995 seconds | |||
| Resolution | 5 ps | |||
| Accuracy | 1500 ps + timebase error × delay | |||
| Timebase | Standard: 25 ppm crystal oscillator Optional: 1 ppm TCXO (opt. 03) External: 10.0 MHz reference input | |||
| RMS jitter | <100 ps + (10-8× delay) | |||
| Trigger delay (t.) | 85 ns (ext. trigger to T0 output) | |||
| External Trigger | ||||
| Rate | DC to 1/(1 µs + longest delay) | |||
| Threshold | &plun;2.56 VDC | |||
| Resolution | 10 mV | |||
| Slope | Trigger on rising or falling edge | |||
| Impedance | 1 MΩ + 40 pF or 50 Ω | |||
| Internal Rate Generator | ||||
| Rate | Single shot, 0.001 Hz to 1.000 MHz, or Line | |||
| Resolution | Four dis, 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 (t.) | |||
| 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 | &plun;(50 mV + 3 % of pulse amplitude) | |||
| Option 02 | Rear panel 1 µs pulses corresponding to T0, A, B, C, D outputs with nominal amplitude of 8× the front-panel outputs at 1kHz rep rate. Output level reduced by 2 V/mA of additional average output current. | |||
| Fast Rise Time (opt. O4A) | ||||
| Output amplitude | +0.5 to 2.0 VDC | |||
| Output offset | -0.8 VDC (t.) | |||
| Transition time Rise (20/80 %) Fall (20/80 %) |
| |||
| Pulse aberrations Foot Ring | 4 % (t.) &plun;5 % (t.) | |||
| Fast Fall Time (opt. O) | ||||
| Output amplitude | -0.5 to -2.0 VDC | |||
| Output offset | +0.8 VDC (t.) | |||
| Transition time Rise (20/80 %) Fall (20/80 %) | 2500 ps (max.) 100 ps (max.) | |||
| Pulse aberrations Foot Ring | 4 % (t.) &plun;5 % (t.) | |||
| 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" × 4.75" × 14" (WHL) | |||
| Weight | 10 lbs. | |||
| Power | 70 W, 100/120/220/240 VAC, 50/60 Hz | |||
| Warranty | One year parts and labor on defects in materials and workmanship | |||
