Tegam 2348 Instruction Manual

TEGAM, INC.

MODEL 2348

18.75 W Power Amplifier

This owner’s manual was as current as possible when this product was manufactured. However,
products are constantly being updated and improved. Because of this, some differences may occur
between the description in this manual and the product you received.

Instruction Manual

PN# 810049-CD

Publication Date: July 2006

REV. B

Table of Contents

I PREPARATION FOR USE ..................................................................................3

Unpacking & Inspection ........................................................................... 3

Optional Accessories ............................................................................... 3

Safety Information & Precautions ............................................................. 3

Terms in this Manual ......................................................................... 3

Terms as Marked on Equipment ........................................................... 3

Symbols .......................................................................................... 4

Grounding the Equipment ................................................................... 4

Danger Arising from the Loss of Ground ............................................... 4

Use the Proper Fuse .......................................................................... 5

Do not Use in Explosive Environments .................................................. 5

Do not Operate without Covers ........................................................... 5

Servicing Safety Summary ...................................................................... 5

Do not Service Alone ......................................................................... 5

Use Care when Servicing with Power On ............................................... 5

Power Source ................................................................................... 5

Power & Fuse Settings ............................................................................ 6

Important Safety Information .................................................................. 7

II INSTRUCTIONS FOR USE ............................................................................... 8

Intended Use ......................................................................................... 8

Monitor Outputs ..................................................................................... 8

Voltage & Current Limitations .................................................................. 8

Frequency Characteristics ........................................................................ 8

Protection Circuits .................................................................................. 8

Connections .......................................................................................... 8

III INSTRUMENT DESCRIPTION .......................................................................... 9

Instrument Specifications ........................................................................ 9

Figure 1: No Load and Full Load Gain (dB) vs. Frequency ............................. 10

Figure 2: No Load and Full Load % Distortion (50 Vp-p) ............................... 10

IV SERVICE INFORMATION ................................................................................ 11

Warranty ............................................................................................. 11

Warranty Limitations .............................................................................. 11

Statement of Calibration ......................................................................... 11

Contact Information ............................................................................... 11

Equipment Maintenance .......................................................................... 12

Repair Parts .......................................................................................... 12

Preparation for Repair or Calibration Service .............................................. 12

Expedite Repair & Calibration Form ........................................................... 13

Power Amplifier Offset Gain Calibration Procedure ....................................... 14

V APPENDIX ..................................................................................................... 16

1

2

Model 2348 Power Amplifier Instruction Manual Preparation for Use

Unpacking & Inspection:

Each 2348 is put through a series of electrical and mechanical inspections before shipment from
the factory. Upon receipt of your instrument, unpack all of the items from the shipping carton and
inspect for any damage that may have occurred during transit. Report any damaged items to the
shipping agent. Retain and use the original packing material for reshipment if necessary.

Upon Receipt, inspect the carton for the following items:

1- Model 2348 Power Amplifier
1- Model 2348 User’s Manual, P/N 810049-CD
1- Power Cord, P/N 600014

Optional Accessories:

Rack Mount Kit, P/N 740532
BNC to BNC Cable, P/N CBL-3102
User Manual (Paper Copy), P/N 810049

!

Safety Information & Precautions:

The following safety information applies to both operation and service personnel. Safety
precautions and warnings may be found throughout this instruction manual and the equipment.
These warnings may be in the form of a symbol or a written statement. Below is a summary of
these precautions.

Terms in This Manual:

CAUTION statements identify conditions or practices that could result in damage to the equipment
or other property.

WARNING
life.

statements apply conditions or practices that could result in personal injury or loss of

Terms as Marked on Equipment:

CAUTION indicates a personal injury hazard not immediately accessible as one reads the marking,
or a hazard to property including the equipment itself.

DANGER

indicates a personal injury hazard immediately accessible as one reads the marking.

3

Model 2348 Power Amplifier Instruction Manual Preparation for Use

!

Safety Information & Precautions Cont’d:

Symbols

As Marked in This Manual:

!

This symbol denotes where precautionary information may be found.

As Marked on Equipment:

!

Attention – Please refer to the instruction manual.

Danger – High or hazardous Voltage

Earth Ground Terminal

l

O

On

Off

Chassis Terminal

Alternating Current

!

Grounding the Equipment

This product is grounded through the grounding conductor of the power cord.
WARNING:
properly wired receptacle before using this instrument.
The proper grounding of this instrument is essential for safety and optimizing instrument
operation.

Danger Arising from Loss of Ground

If the connection to ground is lost or compromised, a floating potential could develop in the
instrument. Under these conditions all accessible parts, including insulating parts such as keypads
and buttons could develop a hazardous voltage and put the user at risk.

4

To avoid electrical shock or other potential safety hazards, plug the power cord into a