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Genrad 1689M Digibridge

Precision RLC Bridge

Component Tester / LCR Meter



This instrument is the bench mark in LCR meters for precision  (.02% basic accuracy) and speed (Up to 30 readings per second).  The 1689M keyboard is simple to operate using the prompt sheet, and testing can also be performed via the IEEE-488 interface. Included are the Prompt Sheet, A HP Test fixture, and copy of the manual. This Unit has been tested and is in excellent physical and electrical condition.

Programmable RCL Digibridge

The 1689 M automatically measures R L C D & Q  it displays capacitance from .00001 pF to 99999 microF, resistance from .00001 ohm to 99999 Kohms, and inductance from .00001 mH to 99999 H with .02% accuracy, D & Q from .0001 to 9999.  External Bias Voltages to 60 vdc maybe applied from a rear panel input.  An Internal bias of 2 volts may be applied to capacitors by using the INT BIAS function.  Test Voltages from 5 mV to 1.275 V in 5 mV steps are available.  Over 500 test frequencies may be selected from the range of 12 Hz to 100 kHz.  Programmability is through a rear panel IEE-488 interface.  This instrument is fitted with the IEEE-488 (option 1658-9620), and packaged in a standard 19inch rack mountable cabinet.  The front panel B&C input connectors can be relocated to the rear panel for additional systems convenience.  





As our many customers will attest, we will do our very best to resolve any customer problems.  But our official policy is: 

  • All items sold are guaranteed against D.O.A. only. 
  • All claims must be made within 3 days of receipt. 
  • All warranties are void if the calibration / warranty seals are broken.



Shipping Policy

Buyer will pay $40.00 packing and shipping in the continental United States.  We will make every effort to ship within 24 hours of receipt of payment.  We ship with FedEx only.  We will be glad to ship with other carriers using the purchasers shipping account.  Please contact us to make any special shipping arrangements. For shipping rate research, our shipping address is Boulder, CO USA ---- Zip Code is 80305.

Foreign buyers:  Unless special provisions have been made, you are responsible for making your own shipping arrangements and all costs related to customs, duties & special packaging requirements.  Please do not ask us to quote you international shipping rates.  Use the address information above to research you own shipping rates.  You can email waltwhite@ascentconcepts.com to get the packaging fee, package weight and size for your research.  Items sold outside the USA are sold as is.  



 Payment Policy

We accept Credit Card payment through Paypal.   We accept Cashiers Check or Money Orders.



Ascent Concepts and Technologies is a Research & Development Lab.  As a service to the companies and institutions we work with, we broker their excess equipment & acting as application specialists on their new equipment needs.  We are now offering quality used equipment to the public with the same level of professionalism and service.   Please feel free to email at thomasknox@ascentconcepts.com or call Thomas @ 1-303-554-0307 with any Technical questions.  Please feel free to email at waltwhite@ascentconcepts.com or call Walt @ 1-720-276-8288 with any Shipping or Logistical questions. We make every effort to evaluate and guarantee our equipment.  Although we do not provide NIST traceable calibration, we do have in house calibration equipment and will make every effort to test and verify performance on equipment we sell.  However we do not warranty any items shipped outside the United States. 

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The equipment shown is a representation only.  We often have multiple units in stock so please email us with your needs.  We have a large inventory and can usually find any test and measurement item in a short time frame.------Inquires info@ascentconcept.com