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Tektronix DD501 Digital Delay

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Tektronix DD501 Digital Delay
End Time :3 days, 8h 38m
Sep. 28, 2017 19:06:01 PDT
Condition: Used
Quantity Available: 1
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$100.00
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tkosiorek (86) Verified Seller My Store
Registered since Dec 2010
in United States
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Sonic Electronics and Surplus
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Online Auction Description

This is from the surplus of NASA Lewis Research center.

Tektronix DD501 Digital Delay

The DD 501 Digital Delay is an events counting plug-in unit designed for use in a TM 500-Series Power Module mainframe. Separate external trigger signals are connected to the EVENTS and START INPUT connectors allow up to 99,999 events to be counted. That is, the unit counts a predetermined number of events, from 0 to 99,999, selected by the front-panel thumb-wheel switches. The last event counted generates a trigger pulse to the DELAYED TRIGGER OUT connector on the front panel. Delay by event is particularly useful in troubleshooting asynchronous logic systems. The DD 501 can also function as a frequency divider when the same signal is applied to both inputs. The DD 501 can be used in a counted burst mode with pulse or function generators that can be synchronously gated. This provides the ability to dial up the number of pulses you want in a burst for applications with shift registers, memories, data communications, process control, or any system requiring an exact number of pulses or waveforms. A jumper inside the DD 501 converts the DELAYED TRIGGGER OUTPUT to a delay interval gate waveform for this application. TEKTRONIX generators capable of being gated by the DD 501 are the FG 501, FG 502, FG 504 and the PG 508. Other DD 501 applications include ranging for radar, sonar, ultrasonics, or laser. By using the proper frequency clock, the numbers dialed up can represent miles, yards, kilometers, etc. In systems requiring precision timing. several DD 501s and a reference clock can provide precise thumbwheel-selectable repetition rates, delays, pulse widths, or timing intervals.

I’ve seen other units of this type selling for over $850.00 but I need to liquidate my shop and test equiptment,This is in like new condition.but used.
This sale is only for the one plugin unit and does not include the other modules in the mainframe.
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Payment Methods Accepted by Seller:
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Shipping
Shipping Terms Buyer pays for shipping expenses
Seller ships internationally.
Ships From44109, Ohio, United States
PostageContact Seller For Postage
Insurance Fee -
Shipping & Payment DetailsShipping in the USA will be by FEDEX,international shipping will be by USPS mail international

The seller , tkosiorek , assumes all responsibility for the contents of this listing

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