Stanford Research
Stanford Research SR540
3.7KH Chopper
4 Hz to 3.7 kHz Frequency Range
Crystal-controlled, phase-locked loop (PLL) Speed Control
0.005% (crystal controlled) Frequency Accuracy
30 slots per disk Number of Slots
TTL frequency reference output synchronized to chopper Output Signal

| Attribute | Value |
|---|---|
| Frequency Range | 4 Hz to 3.7 kHz |
| Speed Control | Crystal-controlled, phase-locked loop (PLL) |
| Frequency Accuracy | 0.005% (crystal controlled) |
| Number of Slots | 30 slots per disk |
| Output Signal | TTL frequency reference output synchronized to chopper |
| Motor Type | DC servo motor |
| Aperture | 3 mm standard aperture |
| Power Requirements | 100/120/220/240 VAC, 50/60 Hz, 18 W |
| Dimensions | 13 cm x 13 cm x 10 cm (W x H x D) |
| Weight | 1.5 kg |
Stanford Research SR540 Options:
- SR540 - O5402530 - 25/30 dual-slot replacement blade
- SR540 - O54056 - 5/6 dual-slot replacement blade
- SR540 - O5405 - 5-slot replacement blade
- SR540 - O54030 - 30-slot replacement blade
- SR540 - O540RCH - Replacement chopper head
| Model | SR540 |
|---|
The Stanford Research SR540 chopper will handle all your Optical chopping requirements from simple Measurements to Dual-beam and intermodulation experiments.




