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Agilent Technologies Noise Sources: 346A, 346B, N4000A, and N4001A

Agilent Technologies Noise Sources: 346A, 346B, N4000A, and 
N4001A

A. Introduction

Due to a change of manufacturer of the noise diodes, adjustment of bias current is now necessary to ensure that the 
noise source performs within its specified ENR range. This document is supplied with all the following replacement 
parts.

CAUTION:

Repair or parts replacement of noise sources should NOT be attempted without full
calibration capability and official field calibration software.

This Installation Note applies to the installation of the following replacement parts:

Table 1

Replacement Parts List

Model

Replacement Bulkhead

Replacement Noise Cartridge

346A Std.

00346-60022

00346-60154

346A Opt. 001

00346-60023

00346-60154

346A Opt. 002

00346-60024

00346-60154

346A Opt. 004

00346-60025

00346-60154

346B Std.

00346-60026

00346-60154

346B Opt. 001

00346-60018

00346-60154

346B Opt. 002

00346-60019

00346-60154

346B Opt. 004

00346-60020

00346-60154

N4000A Std.

N4000-60014

00346-60154

N4000A Opt 001

N4000-60015

00346-60154

N4001A Std.

N4001-60003

00346-60154

N4001A Opt 001

N4001-60004

00346-60154

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Содержание 346A

Страница 1: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

Страница 2: ...heUSAJuly2001 Agilent Technologies Noise Sources 346A 346B N4000A and N4001A All Serial Numbers Installation Note Instructions for Setting Bias Current Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 3: ...ility and fitness for a particular purpose Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Windows 95 and Windows NT are U S registered trademarks of Microsoft Corporation Copyright 2001 Agilent Technologies Artisan Technology Group Quality Instrumentation Guarantee...

Страница 4: ...bration software This Installation Note applies to the installation of the following replacement parts Table 1 Replacement Parts List Model Replacement Bulkhead Replacement Noise Cartridge 346A Std 00346 60022 00346 60154 346A Opt 001 00346 60023 00346 60154 346A Opt 002 00346 60024 00346 60154 346A Opt 004 00346 60025 00346 60154 346B Std 00346 60026 00346 60154 346B Opt 001 00346 60018 00346 601...

Страница 5: ...replace the attenuator to meet specification On the N4000A and N4001A models the bias is set electronically by using field calibration software to calibrate the Noise Source and re burn the EEPROM The bias value of current supplied with the Replacement Noise Cartridge is to be used to program the sensor The enclosed resistor can be discarded A 1 346A B Replacement Noise Cartridge Installation Inst...

Страница 6: ... BNC connector and slide out the printed circuit board assembly 7 Install the replacement bulkhead 8 Check the resistor installed if any in position R7 on the 00346 60001 printed circuit board refer to Figure 1 00346 60001 If it matches the resistor supplied it is not necessary to install it in the printed circuit board 9 Install the supplied resistor in R7 position refer to Figure 1 00346 60001 1...

Страница 7: ...ble 2 Decreasing the bias current by 10 increases the ENR response by 0 5dB at 10MHz 11 Retest ENR A 5 N4000A N4001A Replacement Bulkhead Assembly Installation Instructions 1 Ensure that the value of the current is marked on the replacement bulkhead 2 Disassemble the Noise Source using the procedure in the SNS Series Operating and Service Guide N4000 90001 3 Remove the old bulkhead and install the...

Страница 8: ...as current values Decreasing the bias current increases the ENR response 8 Retest ENR A 7 Printed Circuit Board Assembly Graphic and Resistor List Table 2 Parts List 1 In addition replace R6 with 0698 7216 147 Ohms Figure 1 00346 60001 Current mA R7 Ohms R7 Part Number 11 237 0698 3442 12 200 0698 6377 13 162 0757 0405 14 133 0698 7215 15 100 0757 0401 16 75 0698 7209 17 51 1 0757 0394 18 28 7 069...

Страница 9: ...gilent Internal Reference Only Manufacturing Part Number Customer Order Number Printed in USA July 2001 00346 90137 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Страница 10: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

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