Model DD- 1
Description:
The Model DD-1 is an instrument for delaying digital signals from 10 to 500 msec (other ranges may be specified). The Model DD-1 is an edge-triggered device employing an expandable static shift register to achieve delays of up to 500 msec while maintaining a data acquisition rate of greater than 300 Hz without bit information drop-out. This feature makes the Model DD- 1 ideal for delaying recognition of spike events to a computer system for other interrogations or post event conditions before acceptance. The front panel provides a five position delay range switch and a variable delay control for continuous resolution of delay time. It also provides BNC connectors for input and output functions which are TTL compatible.
The Model DD- 1 is of modular construction with a blue anodized and
engraved front panel and slides easily into the Model RP-l rack mount power
supply module cage system.
| Input Impedance | 1 TTL UL |
| Input Coupling | DC |
| Input Voltage Range | TTL compatible (Zener protected) |
| Input Pulse Requirement | Edge triggered, automatic latching |
| Output Pulse Duration | 1 msec (nom.) |
| Output Drive | 10 TTL UL |
| Output Polarity | P0S. TTL TRUE LOGIC |
| DIGITAL DELAY | 10 msec increment ranges continuously variable 10-500 msec |
| Power Requirements | +5 volts supplied by the Model RP-1 |
| Size | 2.8"w x 5.25"h x 7.25"d |
| Weight | 1 lb. |
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