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Important Notice

This unit is intended for use as a research or teaching tool

ONLY and is not authorized for use as a component in a life

support device or other clinical system.  Therefore, neither 

we nor our agents can be held responsible if this notice is dis-

regarded.

WARNING

50-6808 Harvard Surface Electrodes

When using Coupland-Davis type electrodes or ANY type of needle

electrode, 

ALWAYS STERILIZE THE ELECTRODES BEFORE AND

AFTER USE ON EACH SUBJECT

to reduce the chance of skin

infections or blood-carried diseases being transmitted.

Introduction

The Harvard Isolated Preamplifier has been designed for ECG

(EKG), EMG, and ENG (EOG) recording with subject isolation.  The

front end of the preamplifier is a battery operated opto-isolator.

The remainder of the circuit obtains its power from the host unit.

There are two types of input:  a 3-pin socket for ordinary differen-

tial applications, and a “5-lead” input for ECG limb selection, cou-

pled with a 7-position selector switch.  There is a 3-position gain

selector and 3-position filter selector.

NOTE:  When this Isolated Preamplifier is to be used with our

Universal range of Oscillographs or with either the 50-4027 or 

50-4028  4-Channel Interface Adapter, the 50-5966 Isolator Interface

Unit is also required.

Содержание 50-9513

Страница 1: ...84 October Hill Road Massachusetts 01746 Tel 508 893 8999 Fax 508 429 5732 e mail bioscience harvardapparatus com Web Site harvardapparatus com Operating and Maintenance Instructions Harvard Isolated...

Страница 2: ...illograph 8 9 Use with the Harvard Student Oscillograph 10 11 Problems 12 Service Information 12 13 Customer Contact Addresses 13 Diagrams Figure 1 Isolated Preamplifier Controls 3 Figure 2 ENG Electr...

Страница 3: ...ing transmitted Introduction The Harvard Isolated Preamplifier has been designed for ECG EKG EMG and ENG EOG recording with subject isolation The front end of the preamplifier is a battery operated op...

Страница 4: ...V Filtering 3 position filter switch 30 Hz 3 dB down 150 Hz 3 dB down 15 kHz 3 dB down Gain Selectable x10 x100 x1000 Other Facilities DC level control battery level indicator choice of DC or AC coupl...

Страница 5: ...needle electrode ALWAYS STERILIZE THE ELECTRODES BEFORE AND AFTER USE ON EACH SUBJECT to reduce the chance of skin infections or blood carried diseases being transmitted Always ensure that the electro...

Страница 6: ...ing of the reference electrode or zero volt electrode This electrode within reason can be placed anywhere 5 For EMG just place the electrodes over the group of muscles to be monitored see Fig 3 below...

Страница 7: ...e 0 volt reference Essentially an ECG can be recorded from any part of the body but unless the conventional positions are used the interpretation of the results would be difficult For more guidance pl...

Страница 8: ...7 AVL I AVR II III AVF V1 V2 V4 V5 V6 V3...

Страница 9: ...ction 3 4 0 follow steps 1 to 13 inclu sive 6 Plug the Isolated Preamplifier to the Isolator Interface 7 Switch the Isolator Interface on and check that the battery indicator 1 on the Preamplifier is...

Страница 10: ...ier s FREQ CUT control 4 If you are performing a 5 lead ECG you may select the various limb configurations using switch 2 Calibrate the waveform using the Oscillograph s the CAL 0 1 switch Z This will...

Страница 11: ...raph Instruction manual section 3 4 0 follow steps 1 to 13 inclu sive 6 Connect the Isolated Preamplifier to the INTERFACE socket S on the Student Oscillograph 7 Check that the battery indicator 1 on...

Страница 12: ...control 4 If you are performing a 5 lead ECG you may select the various limb configurations using switch 2 Calibrate the waveform using the Oscillograph s the CAL 0 1 switch Q This will cause the pen...

Страница 13: ...on the Isolated Preamplifier 4 If the Isolated Preamplifier is sited close to a main power lead then move one or the other or preferably both as far apart as possible Service Information Fitting or R...

Страница 14: ...address below stating the nature of the fault and the approximate date of purchase if possible ENGLAND Harvard Apparatus Ltd Telephone 0732 864 001 Fircroft Way Fax 0732 863 356 Edenbridge Telex 9529...

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