The PLD-2C driver phase locks two choppers. The [sub]system consists of two resonant optical choppers (type CH), chopper "A" and chopper "B", in a primary/secondary mode, to provide ultra stable modulating beam motions. The system can be used as a "stand alone" unit, in the laboratory or as a portable instrument, or incorporated into a larger instrument or system.
Chopper "B" is phase locked to chopper "A" (the secondary is locked to the primary). The phase relationship to the master is factory set to customer requirement (0° to 360°) and is front panel adjustable in a range of +/-45° min. The driver can be a fully integrated driver with front panels controls and internal power supplies or a printed circuit board level driver. The dimensions of the cased driver are: 12" × 10" × 3.8". The PLD-2C-PC driver is a printed circuit board level driver, which requires an external +/-15V DC power supply.
FRONT PANEL CONTROLS
| POWER | Power switch to turn the drive "ON" |
| LOCKED MODE | Choppers are phase locked in a primary/secondary mode |
| OSCILLATOR MODE | Choppers are self oscillating at their resonant frequency (not locked) |
| PHASE CONTROL POT | Phase adjustment of choppers in relationship to each other, +/- 45 degrees |
| MONITOR A & B | Chopper position output for each chopper, BNC connectors |
| AMPLITUDE A & B | Amplitude adjustment POT for each chopper |
| OUTPUT A & B | Output connector to interconnect to each chopper |
SPECIFICATIONS
| Frequency range | 10 Hz to 16 KHz |
| Monitor | Analog position output, +/-5V max. 1K ohm max load for each chopper |
| Phase adjustment range | +/-45° min. |
| Phase stability | 0.01% |
| Phase relationship | Factory set to customer specifications |
| Operating temperature range | Room temperature only |
| Power input | 110V ac or 220V ac, 50-60 Hz, 20W |
