Lecroy / Teledyne DA1855A PR2 Dual Channel Differential Amplifier - CALIBRATED

$5,990.00
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SKU:
255207435492
Condition:
Refurbished
Brand:
LeCroy
MPN:
DA1855A
Lecroy / Teledyne DA1855A PR2 Dual Channel Differential Amplifier - CALIBRATED

Product Description

Seller refurbished

 
 

Lecroy / Teledyne DA1855A PR2 Dual Channel Differential Amplifier - CALIBRATED!

 
Item Description

Lecroy / Teledyne DA1855A PR2 Dual Channel Differential Amplifier - CALIBRATED!

 

You are bidding on an Lecroy / Teledyne DA1855A PR2 High Performance, 100 MHz Dual Channel Differential Amplifier.  It will arrive with a fresh calibration with certificate performed by an ISO 17025 accredited lab!  It has a list price of $14,000 USD!

 
The DA1855A is a stand-alone, high-performance 100 MHz differential amplifier. It is intended to act as a signal conditioning preamplifier for oscilloscopes, digitizers and spectrum analyzers, providing differential measurement capability to instruments having only a single-ended input. When used with a DA1855A, oscilloscopes can obtain Common Mode Rejection Ratio (CMRR) and overdrive recovery performance levels previously unobtainable.

Amplifier gain can be set to 1 or 10. A built-in input attenuator can be separately set to attenuate signals by a factor of 10, providing gains of 10, 1, or 0.1 and common mode dynamic range of ±15.5 V (÷1) or ±155 V (÷10). Optional probes increase the maximum input signal and common mode ranges in proportion to their attenuation ratio but do not exceed their maximum input voltage rating. Effective gain of the DA1855A, including probe attenuation, amplifier gain and attenuator settings, is automatically displayed.

The DA1855A has a bandwidth of 100 MHz, but any one of the three 3-pole bandwidth limit filters can be selected to reduce bandwidth to 20 MHz, 1 MHz or 100 kHz to limit noise above the frequency of interest.

The DA1855A output is carefully limited to ±500 mV, so that the oscilloscope is not overdriven by large inputs. This allows many oscilloscopes to directly measure the settling of D/A converters with 14-bit (60 ppm) precision, better than any other differential comparator.

The DA1855A features a built-in Precision Voltage Generator (PVG) that can be set to any voltage between ±15.5 V (±10 V in Differential Offset) with up to 100 µV resolution. The PVGs output can be selected as an input to the inverting (-) input of the amplifier for operation as a differential comparator or applied internally as a true differential offset voltage. The PVG is also available for external use through a rear panel connector.

The DA1855A operates from 90 to 250 VAC line without line switching. High-performance differential probes such as the DXC100 ÷10/÷100 high CMRR probes are recommended.

Overdrive Recovery

With a ÷100 probe, the DA1855A settles to within 100 mV referred to input, from a 400 V input signal within 100 ns. With attenuating probes, this allows the in circuit measurement of dynamic saturation in switch mode power converter switching devices.

Comparator Mode

The DA1855A becomes a differential comparator when the internal PVG output is selected as the amplifier's inverting (-) input. In this mode, the DA1855A can be used to very accurately measure relatively small signals that are riding on large AC or DC components. Due to the precision of the voltage generator, an oscilloscope, when used with the DA1855A, can make voltage measurements that are much more accurate than the oscilloscope is capable of by itself. The output of the PVG is available for external use via a rear panel connector.

True Differential Offset Mode

The DA1855A has built-in Precision Voltage Generator can be used to generate a true differential offset while still allowing both inputs to be used as differential inputs. The offset range can be as high as ±50,000 divisions and the generator has 5 1/2 digit resolution. This mode facilitates making measurements such as changes to a transistor's base to emitter voltage caused by variations in temperature and/or current. Used in this mode, the voltage generator can be set to a value that will zero out the static value of the junction's on voltage. The DA1855A's differential measurement capability will reject any dynamic signal common to both sides of the junction, and the oscilloscope is left to measure only the changes in the junction voltage.

Autobalance

Each time either gain setting button is pressed, the DA1855A automatically adjusts the amplifier's DC balance.
 
Features and Benefits

⦁ Full control from oscilloscope through ProBus interface
⦁ DC to 100 MHz bandwidth
⦁ Outstanding 100,000: 1 Common Mode Rejection Ratio (CMRR)
⦁ Gain of X1 or X10
⦁ Industry-leading overdrive recovery
⦁ Low noise
⦁ Selectable BW limiting
⦁ Two gain control modes when connected to a LeCroy oscilloscope
⦁ Built-in Precision Voltage Generator (PVG)
⦁ Comparator and true differential offset modes
 
 

This unit is in excellent condition, has been fully tested and is guaranteed functional. It comes w/ a 14 day right of return should it not perform to your expectations. Please review pics and text carefully before bidding to verify accuracy of description. If you don't see it in the pictures, it is not included.

Insurance is included in UPS shipping charges. Item shipped internationally on buyer's UPS, FEDEX or DHL accounts only.

We will accept payment for this item by company check, cashier’s check and wire transfer only. 

If you have zero feedback, contact us prior to purchase so we know you are a serious bidder. Otherwise, we may cancel your bid before the auction closes. It should be obvious that you should only bid if you are serious and do intend to complete the transaction. Any stated warranty will be voided if the unit is opened or if any calibration or lockout stickers have been tampered with or removed. 

Please note that shipping and insurance costs are non-refundable. 

Our feedback is very important to us and we strive for 100% positive on every transaction. If you are unsatisfied with any aspect of your transaction, please contact us before leaving negative or neutral feedback so that we can address and remedy the issue immediately. Additionally, we are always happy to leave positive feedback for our trading partners after a successful transaction. 

Make sure that you check out our other auctions for more great deals on test and measurement equipment.

 

Thank you and good luck bidding.



 



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Need your unit calibrated by an ISO 17025 accredited lab prior to shipment? Not a problem. We work with numerous calibration and repair companies that can provide your required service at competitive prices.

About Us

Spaulding Surplus, LLC was established in 2002 and we pride ourselves on sustaining an expansive and diverse inventory of high value test equipment, in stock and ready to ship. We strive to exceed our customers expectations by providing quality general purpose electronic test and measurement equipment at the absolute lowest prices around. Our equipment is sourced from a variety of manufacturers including Agilent/HP, Fluke, Tektronix, Rohde & Schwarz, LeCroy, Anritsu, Advantest, Aeroflex/IFR, ILX Lightwave, JDSU, Wavetek, etc. We are also dedicated to providing fair and competitive bids for your unused test equipment and excess inventory. WHY PAY MORE FOR THE SAME EQUIPMENT?
 

Payment

We accept payment by company check, bank transfer and Paypal (for items valued below $1500 USD). Payment must be received within 5 days of close of auction. Our mailing address is below and our bank info can be forwarded upon request. Spaulding Surplus 12829 Landale Street Studio City, CA 91604.
 

Shipping

All instruments are professionally packed and shipped via UPS GROUND with full insurance. We typically ship within the continental US only (please no PO Boxes) unless other arrangements have been made with the buyer. International customers may provide their UPS, DHL or FedEx account for international shipments. Items will be shipped within 7 business days of payment. 
 

Terms

All items sold on Ebay come with a standard 30 day right of return warranty from the date of receipt, unless otherwise specified in the auction details. Payment in full is required prior to shipment. Buyers are required to notify us immediately if an instrument arrives damaged, and must keep all boxes and packing materials in case a UPS damage inspection is necessary. An extended warranty of 30 days is available for all direct purchases from Spaulding Surplus, LLC and established customers purchasing directly may qualify for net 30 payment terms with PO required prior to shipment.


Returns

Spaulding Surplus typically offers a 30 day right of return for equipment received damaged or non-functional.  However, Spaulding Surplus, LLC shall not be held liable for any damages resulting from buyer/operator negligence, or the improper use of its equipment, nor does it warrant their suitability for any specific application or project.  The verification of product capability is the sole responsibility of the buyer.  PO’s and purchases cancelled due to insufficient instrument capability, buyer’s remorse or loss of order are always subject to a minimum 20% restocking fee.  A complete evaluation is required for any instrument returned under warranty, and refunds are not issued until said evaluation has been completed by an ISO 17025 accredited calibration lab. 


 

Spaulding Surplus, LLC prides itself on sustaining an expansive and diverse inventory of high value test equipment, in stock and ready to ship. We strive to exceed our customers expectations by providing quality general purpose electronic test and measurement equipment at the absolute lowest prices around.

 
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