BRUEL & KJAER NEXUS 2692 User Manual

BI 5042−12
Technical
Documentation
The NEXUS
™
Range of
Conditioning Amplifiers
Types 2690, 2691, 2692 and 2693
Service Manual

BRUEL & KJAER NEXUS 2692 Specifications

General

Type	Conditioning Amplifier
Input Channels	1
Output Channels	1
Input Connector	BNC
Output Connector	BNC
Frequency Range	0.1 Hz to 200 kHz (-3 dB)
Power Supply	100-240 VAC, 50/60 Hz
Noise	<3 μV (20 Hz to 20 kHz, Gain 0 dB)

Summary

General Information

1.2 Safety

Critical safety precautions and warnings for operating the instrument.

1.4 Service Policy

Covers exchange schemes, repair policies, and procedures for faulty parts.

1.4.1 Exchange Scheme

1.4.3 Repair of PCBs

Instructions and considerations for repairing printed circuit boards.

1.4.5 Repair Procedure

1.5 Calibration and Testing

Details on calibration types, testing, and accreditation.

Checking Procedures

3.3 Manual Checking Procedure

3.4 Checking Charge Channels ZX 2692

Detailed checks for calibrated output, filters, noise, signals, and overload.

3.5 Checking Microphone/Sound Intensity Channels ZX 2690/2691

Procedures for checking ZX 2690/2691 including output, filters, noise, and overload.

3.6 Checking DeltaTron Channels ZX 2693

Covers calibrated output, filters, noise, supply current, signals, and overload for ZX 2693.

Servicing with ATAC System

7.3 Service 269X Menu

Details of the Service 269X menu for adjustments and measurements.

7.3.1 Connecting the NEXUS

7.3.2 Correction Factors

Process for obtaining and loading correction factors.

7.3.3 Adjust Polarization Voltage

Procedure for measuring and setting the correct polarization voltage.

7.3.4 Adjust Frequency Response

Manual steps to fine-tune the instrument's frequency response.

7.4 Set Configuration

Guide to setting channel types and auxiliary modules.