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Esi 73 (tegam prt-73) precision ratio transformer good
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ESI 73 Precision Ratio Transformer (Tegam PRT-73)
8½ digit Resolution with the 2.5V/Hz Option, GPIB
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Description: The ESI Model 73 Precision Ratio Transformer is a remotely programmable AC voltage divider for use in the calibration of other ratio transformers, voltmeters, servo components, and devices that require a precise division of AC signals. The included 2.5V/Hz option increases the input voltage, extends the low frequency range, and adds another decade of resolution to your measurements for a total of 8½ digits of resolution. The Model 73 can be programmed remotely through a standard IEEE-488 GPIB interface. An overvoltage circuit protects the Model 73 from harmful or excessive AC or DC voltages. These ratio transformers are top performers and they are getting harder to find. This is our last one.
Condition: Reconditioned and Performance Tested to meet manufacturers specifications. Clean unit inside and out. Physically inspected, hardware re-torqued, connectors treated with a preservative, controls and switches lubricated as appropriate, power supply electrolytics tested. Burned in for 72 hours and then performance tested. All knobs, switches, and displays are in good condition.
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Please contact us prior to purchasing an item if you have a question. We're glad to assist in any way we can.
Calibration is not guaranteed unless the item is advertised as calibrated or you purchase calibration at the time of sale. We maintain a laboratory with high quality equipment in order to verify the performance of the items we sell. We can provide ANSI Z540.1 calibration services on most items sold, if desired. Please contact us for Repair, Reconditioning, or Calibration services.
* Item may have some cosmetic imperfections such as scratches, dents, cracks, sticker residue, and discoloration due to normal wear and tear. Every effort is made to make our items as cosmetically acceptable as possible. Abnormal cosmetic conditions are mentioned in the item condition.