Table of Contents
Subscribe to Our Youtube Channel
Summary of Contents for BRUEL & KJAER 7521
- Page 1 Technical Documentation Signal Analyzer Interface Unit Type 7521 Service Manual Brüel&Kjær WORLD HEADQUARTERS: DK-2850 Nærum • Denmark • Telephone: +4545 80 0500 •Telex: 37316 bruka dk • Fax: +4545 80 1405 • e-mail: info@bk.dk BI 5040 –12e...
- Page 2 0 − 2 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual Proprietary: Authorized Brüel & Kjær Personnel Only...
- Page 3 Signal Analyzer Interface Unit Type 7521 Service Manual Valid from serial number 1 627 589 April 1997 Brüel & Kjær Signal Analyzer Interface Unit Type 7521 BI 5040 –12e Service Manual...
- Page 4 All rights reserved. No part of this publication may be reproduced or distributed in any form or by any means without prior consent in writing from Brüel & Kjær Sound and Vibration Measurement A/S, Nærum, Denmark. 0 − 2 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual...
-
Page 5: Table Of Contents
....................3 – 1 Preparation ........................3 – 2 Procedure ........................3 – 2 The Digital Part of the 7521 .................. 3 – 2 The Analog Part of the 7521 .................. 3 – 3 4. Adjustment Procedure ..................... 4 – 1 Introduction ......................... - Page 6 6. Theory of Operation ....................6 – 1 Functional Description ....................6 – 2 Description of the Blocks..................6 – 2 Digital Part ......................6 – 3 0 − 4 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual...
-
Page 7: General Information
Chapter 1 General Information 1 − 1 BI 5040 –12e Signal Analyzer Interface Unit Type 7521 Service Manual... -
Page 8: Introduction
Introduction Introduction The 7521 is a Signal Analyzer Interface Module, always located in slot 0 of an acquisition unit. Type 7521 enables communication between the modules in the acquisition unit (Type 2816 or Type 2825), and a signal analyzer, for example Type 2035. -
Page 9: Safety
Service Policy and FRP Number Type 7521 is a Field Replaceable Part (FRP). To assure economical reuse, it is important that no attempt is made to repair it locally. If such an attempt is made, the price of an exchange FRP is 100% the price of a new one. - Page 10 1 − 4 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual...
-
Page 11: Service Note
Chapter 2 Service Note 2 − 1 BI 5040 – 12e Signal Analyzer Interface Unit Type 7521 Service Manual... -
Page 12: On-Line Editions Of The Service Manual
From time to time some minor changes may be made to improve the performance and serviceability of Type 7521. All information concerning these changes, or any other changes to the service manual, are included in the latest version of the on- line source document. -
Page 13: Checking Procedure
Chapter 3 Checking Procedure 3 − 1 BI 5040 – 12e Signal Analyzer Interface Unit Type 7521 Service Manual... -
Page 14: Preparation
2. Press Reset while holding down Disc File Recall 3. The test program will be loaded in approximately one minute 4. Select K. 7521 Analyzer Interface no. 1 to activate the test. 5. If after the test the monitor shows:... -
Page 15: The Analog Part Of The 7521
Chapter 3 — Checking Procedure Procedure 3.2.2 The Analog Part of the 7521 Trigger Input 1. Press Power "On" on the Type 2035 2. Press Reset while holding down Field Entry 9 3. Move the cursor to Trigger: FREE RUN, using Field Select 4. - Page 16 Frequency counter to be 4.0 ± 0.4 Hz with a 3.8 ± 0.4µs pulse If any of the results differ from those given in this chapter, see Chapter 3− 4 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual...
-
Page 17: Adjustment Procedure
Chapter 4 Adjustment Procedure 4 − 1 BI 5040 – 12e Signal Analyzer Interface Unit Type 7521 Service Manual... -
Page 18: Introduction
6. If it does not just trigger, you must adjust it (steps 8 to 12): 7. Press Power "Off" on the acquisition unit. 8. Withdraw Type 7521, adjust P1 and return the module to slot 0. 9. Press Power "On" on the acquisition unit. -
Page 19: The Sampling Input
5. If it does not just make a new sample, you must adjust it (steps 6 to 11): 6. Press Power "Off" on the acquisition unit. 7. Withdraw Type 7521, adjust P3 and return the module to slot 0. 8. Press Power "On" on the acquisition unit. -
Page 20: The Delay Adjustment
Slot 1;1: 800mv + Direct DC ¬OFF [] Slot 1;2: Slot 1;3: 11. Press System Setups twice 12. Change the setup to the one shown below: Wm CROSS-SPEC X1,Y1 PHA UNW 4− 4 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual... - Page 21 16. If necessary adjust Delay Adj. on the front panel of Unit 1 to bring the delay within tolerance. If you are unable to bring the Type 7521 into tolerance, you must replace it. 4 − 5 BI 5040 – 12e...
- Page 22 4− 6 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual...
-
Page 23: Mechanical Parts
Chapter 5 Mechanical Parts 5 − 1 BI 5040 – 12e Signal Analyzer Interface Unit Type 7521 Service Manual... -
Page 24: Chassis Parts
Chassis Parts Chassis Parts Empty Yellow lead Red lead B B B B r ü e l & K j æ 970158e Fig.5.1 Exploded view of chassis parts 5− 2 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual... -
Page 25: Spare Parts
FA1000 Front Cover GU1641 Distance Panel YS9372 Retaining Screws YM0334 YO0337 Washer QV4056 LED with Leads DH0274 House for Plug Table 5.1 Spare parts list 5 − 3 BI 5040 – 12e Signal Analyzer Interface Unit Type 7521 Service Manual... - Page 26 5− 4 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual...
-
Page 27: Theory Of Operation
Chapter 6 Theory of Operation 6 − 1 BI 5040 – 12e Signal Analyzer Interface Unit Type 7521 Service Manual... -
Page 28: Functional Description
Functional Description Type 7521 in Relation to the System Type 7521 identifies all the modules situated in an acquisition unit, transmits set- ups and programs to all modules, provides all input and generator modules with a sample clock, transmits the sampled data from the active input modules to the signal analyzer, and it communicates with the remote control. -
Page 29: Digital Part
TTL compatible. Sampling/Sync. Generator Type 7521 is able to generate 4 sampling clocks which are all in phase; the frequen- cy can differ from 4.0 to 262,144.0 Hz. The clock signals, the synchronization signal and the system sampling clock are all located in this block. - Page 30 6− 4 Signal Analyzer Interface Unit Type 7521 Brüel & Kjær Service Manual...
Need help?
Do you have a question about the 7521 and is the answer not in the manual?
Questions and answers