Free Shipping

Cheaper Than eBay

Newport/New Focus 3501 Optical Chopper Good Passes all self Tests

Free Shipping

Cheaper Than eBay

Free Shipping

Cheaper Than eBay

Free Shipping

Cheaper Than eBay

Free Shipping

Cheaper Than eBay

Free Shipping

Cheaper Than eBay

Free Shipping

Cheaper Than eBay

Free Shipping

Cheaper Than eBay

Free Shipping

Cheaper Than eBay

Meet The Seller

bizsurplus (+90)

Member For 16 Years 13 Days

Recent Activity Tue 15 Apr 2025 21:29 (EDT)

Location San Diego, CA, United States us Flag

All About

Feedback

For Sale

Sell Here Report Listing

Newport/New Focus 3501 Optical Chopper Good Passes all self Tests

$272.25

Ship to United States : Free Shipping
Total : $272.25

Ask Question

Condition : Used
Dispatch : 4 Days
Brand : None
ID# : 213977540

Quantity : 1 item
Views : 145
Location : United States
Seller : bizsurplus (+90)

Barcode : None
Start : Wed 07 Dec 2022 16:50:09 (EDT)
Close : Run Until Sold
Remain :
Run Until Sold

Domestic Shipping to United States Domestic Shipping to United States

for 1 item(s) edit

Other Courier - (Non Next Day) = Free

Sales Tax on sales to California = 7.75%

Shipping Calculator

More Listings from This Seller view all

Honeywell Instructions for model 1870 Amplifier...

$49.45

Digitech Application Software for Series 500 Pr...

$49.45

Hotpack Convection Ovens 212041,212061,212081,2...

$49.45

Greenlee Textron Model 5778 Megohmmeter

$39.55

Data Precison Model 935 Hand-Held Pocket Portab...

$39.55

Data Precision Digital Multimeter Model 1450 In...

$49.45

Seller's Description

Newport/New Focus 3501 Optical Chopper Good Passes all self Tests

We gladly ship Worldwide*

Scroll down for more Photos and details

Newport/New Focus 3501 Optical Chopper Good Passes all self Tests

Good working condition

s/n 1630

Features:

Crystal Controlled Frequency Synthesizer
Minimize Jitter and Drift of Chopper Head
Harmonic and Subharmonic Chopping
Chopping Frequency of 4 Hz to 6.4 kHz
Harmonic Chopping from 2 to 15
Subharmonic Chopping from 1/2 to 1/15

The New Focus Model 3501 Optical Chopper System is designed to interrupt light paths in optical experiments at frequencies from 4 Hz to 6.4 kHz. Both single and dual beam experiments can be performed across a broad range of chopping frequencies. The chopper has a crystal controlled frequency synthesizer that serves as an internal reference frequency for locking the chopper to a particular chopping frequency. Reference frequencies can also be provided through the Sync Input to allow the chopper to lock to an external source. Several measures ensure that jitter and drift of the chopping frequency is reduced to a minimum. Precision photo-etched wheels are mounted on a high quality DC motor. The motor head has a photo-sensor for monitoring the chopping frequency of the outer part of the wheel. The chopper controller then actively stabilizes the motor speed to match the desired chopping frequency. This technique minimizes phase noise at the chopping frequency and provides for long-term stable chopping with a minimum of frequency drift.

Don't forget to place your bid.

More photos down below

By bidding on this auction you agree to the following terms:

Shipping Terms:

Buyer pays all shipping costs.
Let us know if there is an issue with the shipping costs, as they are automatically calculated by .
Shipments made to California must include 7.75% sales tax unless we are provided with a valid resale certificate.
We reserve the right to ship with Fedex , USPS, UPS and any other carrier in the best interests of both the buyer and seller.
If the shipping cost quoted is over $150, that means it will be shipped freight, and the price quoted is for pickup at a freight terminal nearby your location (usually within 25 mi if you are in a major metro US city). if you need residential delivery, or if you don't have a forklift/loading dock the price will be higher in some cases.

Payment Terms:

Payment is to be made by PayPal, propay or credit card.
Please send us an message if you have any questions.
Payment is to be received within ten days of close of auction.
Should payment not be received within ten days the item will be re-listed and high bidder will forfeit.

International Terms: (These terms only apply to international shipments.)

Buyer is responsible for all brokerage, customs, and or duty charges.
*Not all items are available for international shipment due to import/export regulations. In the event that we are unable to ship to buyers country, buyer will receive a full refund.
Payment must be made in US Dollars.

Warranty Terms:

Returns are available up to 14-days from receipt.
What you see in the picture(s) is what you get nothing more nothing less.
Test results of item(s) in auction are described to the best of our ability in the ad. The results of all tests that are performed are disclosed in the ad.
Items sold as "Untested" are simply that we have been unable to fully test the item(s) due to missing cables/adapters/toner cartridge/ksu/etc, lack of time, or other restrictions.
We guarantee that you will receive the make and model listed in the ad.
The maximum liability of Best Stuff To You is the high bid +shipping cost of the auction listing.

Return Terms:

Returns are allowed and must be filed within 14 days of receipt of shipment.
Item should be returned in the original box and packaging .
Bidder must request a RMA number and return address before returning item(s).
All new/sealed toner cartridges are sold as-is with No returns unless returned unopened.
As a company policy, we do not cancel transactions through .
send an message if you have any questions.
We wont leave you stuck without a solution

Medical Device Terms:

The following terms apply to any and all medical items or any item offered for sale in any medical category or any item that deems these terms are applicable to:

The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, you should not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item.
The buyer will not hold the seller, or the item's manufacturer responsible for the appropriate or inappropriate use of this device either by the user or a third party. Once purchased, it is the sole responsibility of the purchaser to assume any and all liability from the use of this device.
Please note before bidding that any medical equipment purchased should be completely tested by a qualified biomedical technician prior to being put into service
Dan Rydell, SanDiego, CA, USA
name: bizbonanza
send an message if you need more information

Item Condition Terms:

On these listings, our company's condition "used" does NOT necessarily mean "fully operational and functions as intended". If fact it may have unknown flaws and deficiencies. the item has only been tested to the extent described in the item condition/testing notes. Additional testing may be performed upon request of the buyer before shipment to ensure a satisfactory transaction for both parties.

If any provision of this Auction Contract is held unenforceable, All remaining provisions of this Contract shall remain in full force and effect.

Listing Information

Listing Type	Gallery Listing
Listing ID#	213977540
Start Time	Wed 07 Dec 2022 16:50:09 (EDT)
Close Time	Run Until Sold
Starting Bid	Fixed Price (no bidding)
Item Condition	Used
Bids	0
Views	145
Dispatch Time	4 Days
Quantity	1
Location	United States
Auto Extend	No

Seller Recent Feedback

Returns Policy

Returns Accepted

Refund Type: Money Back
Shipping Cost Paid by: Buyer
Returns Within: 30 Days

Purchase Activity

Username	Time & Date	Amount
No Bids as of Yet
This is a single item listing. If an auction is running, the winning bidder will be the highest bidder.

Questions and Answers

No Questions Asked About This Listing Yet

BuyNow Price : $272.25 Quantity Available: 1