Lafayette Instrument 76604US User manual

3700 Sagamore Parkway North . PO Box 5729 . Lafayette, IN 47903 USA . Ph: 765-423-1505 Fax: [phone] . www.lafayetteinstrument.com . E-mail: [email protected]
Model 76604US User’s Manual
3700 Sagamore Parkway North
P.O. Box 5729 • Lafayette, IN 47903 USA
Tel: [phone] • 800.428.7545
Fax: [phone]
E-mail: [email protected]
www.lafayetteinstrument.com
USB PHOTOELECTRIC PLETHYSMOGRAPH
User’s Manual
Copyright © 2003 by Lafayette Instrument Company, Inc. All Rights Reserved -Rel. 6.11.07
Model 76604US

3700 Sagamore Parkway North . PO Box 5729 . Lafayette, IN 47903 USA . Ph: 765-423-1505 Fax: [phone] . www.lafayetteinstrument.com . E-mail: [email protected]
Lafayette Instrument Photoelectric Plethysmograph
3700 Sagamore Parkway North . PO Box 5729 . Lafayette, IN 47903 USA . Ph: 765-423-1505 Fax: [phone] . www.lafayetteinstrument.com . E-mail: [email protected]
2
Description:
The photoelectric plethysmograph is utilized to measure the rapidly occurring relative changes in pulse blood
volume. The photoelectric plethysmograph utilizes a photosensitive cell to measure light reflected or passed through
the tissue segment where the monitor is placed. The light source used produces a light in the infrared range (7000
to 9000 Angstroms). The light in this frequency is scattered by red blood cells so the amount of light reaching the
photo sensor is related to the amount of blood through which it passed before reaching the sensor. The sensor can
be placed on the same side of the monitoring site as the light, in which case the amount of light reflected back is
measured (Handler, Mark & Kraphol, Donald, 2007).
Connecting the Plethysmograph:
A clamp-like device houses both the light source and the sensor, and the assembly is placed on the finger or the
thumb. The Plethysmograph has one primary connector that plugs into any of the auxiliary inputs on the LX4000.
To turn on the Auxiliary input, open the Lafayette Instrument Co. LXSoftware and go to “Tools” > “Preferences”
and choose the Auxiliary input that the Plehtysmograph is plugged into, and click on “enable sensor trace”. After
enabling sensor trace, turn on the hardware by pressing the button on the in-line switch box. The red light will
indicate that the hardware is working properly.

3700 Sagamore Parkway North . PO Box 5729 . Lafayette, IN 47903 USA . Ph: 765-423-1505 Fax: [phone] . www.lafayetteinstrument.com . E-mail: [email protected]
3700 Sagamore Parkway North . PO Box 5729 . Lafayette, IN 47903 USA . Ph: 765-423-1505 Fax: [phone] . www.lafayetteinstrument.com . E-mail: [email protected]
Model 76604US User’s Manual
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Examiners should begin each examination with an acquaintance test to ensure that the pulse wave is recorded at the proper
amplitude (about 3/4 inch) and that the tracing is not erratic. Some adjustment and experimentation may be required to
find the optimal recording site on the hand. The sensor is sensitive to movement, therefore examinees must keep their
hands still during testing. It is recommended that, after every use, the sensor be cleaned with a clean dry cotton cloth by
gently wiping the inside (Handler, Mark & Kraphol, Donald 2007).
Note: Unlike the cardio, the trace for the PLE will not show a rise for deception, but rather a compression.
Chart with plethysmograph and electrodermal sensor tracing displayed simultaneously.
References:
Handler, Mark and Kraphol, Donald., The Use and Benefits of the Photoelectric Plethysmograph in
Polygraph Testing (2007, APA Journal

3700 Sagamore Parkway North . PO Box 5729 . Lafayette, IN 47903 USA . Ph: 765-423-1505 Fax: [phone] . www.lafayetteinstrument.com . E-mail: [email protected]
Lafayette Instrument Photoelectric Plethysmograph
3700 Sagamore Parkway North
P.O. Box 5729 • Lafayette, IN 47903 USA
Tel: [phone] • 800.428.7545
Fax: [phone]
E-mail: [email protected]
www.lafayetteinstrument.com
Lafayette Instrument Co. Europe
4 Park Road, Sileby,
Loughborough, Leics., LE12 7TJ. UK.
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Ordering Information:
All phone orders must be accompanied by a hard copy of
your order. All must include the following information:
1) Complete billing and shipping addresses
2) Name and department of end user
3) Model number and description of desired item(s)
4) Quantity of each item desired
5) Purchase order number or method of payment
6) Telephone number
DOMESTIC TERMS
There is a $50 minimum order. Open accounts can be ex-
tended to most recognized educational institutions, hospitals
and government agencies. Net amount due 30 days from the
date of shipment. Enclose payment with the order; charge
with VISA, MasterCard; or pay COD. We must have a hard
copy of your order by mail or fax. Students, individuals and
private companies may call for a credit application.
INTERNATIONAL PAYMENT INFORMATION
There is a $50 minimum order. Payment must be made in
advance by: draft drawn on a major US bank; wire transfer
to our account; charge with VISA, MasterCard; or confirmed
irrevocable letter of credit. Proforma invoices will be pro-
vided upon request.
RETURNS
Equipment may not be returned without first receiving a
Return Goods Authorization Number (RGA).
When returning equipment for service, please call Lafayette
Instrument to receive a RGA number. Your RGA number
will be good for 30 days. Address the shipment to: Lafay-
ette Instrument Company, 3700 Sagamore Parkway North,
Lafayette, IN 47904, U.S.A. Shipments cannot be received
at the PO Box. The items should be packed well, insured for
full value, and returned along with a cover letter explaining
the malfunction. Please also state the name of the Lafayette
Instrument representative authorizing the return. An estimate
of repair will be given prior to completion ONLY if requested
in your enclosed cover letter. We must have a hard copy of
your purchase order by mail or fax, or repair work cannot
commence.
WARRANTY
Lafayette Instrument guarantees its equipment against all
defects in materials and workmanship to the ORIGINAL
PURCHASER for a period of one (1) year from the date
of shipment, unless otherwise stated. During this period,
Lafayette Instrument will repair or replace, at its option, any
equipment found to be defective in materials or workman-
ship. If a problem arises, please contact our office for prior
authorization before returning the item. This warranty does
not extend to damaged equipment resulting from alteration,
misuse, negligence or abuse, normal wear or accident. In
no event shall Lafayette Instrument be liable for incidental
or consequential damages. There are no implied warranties
or merchantability of fitness for a particular use, or of any
other nature. Warranty period for repairs or used equipment
purchased from Lafayette Instrument is 90 days.
DAMAGED GOODS
Damaged equipment should not be returned to Lafayette
Instrument prior to thorough inspection.
When a shipment arrives damaged, note damage on delivery
bill and have the driver sign it to acknowledge the damage.
Contact the delivery service, and they will file an insurance
claim. When damage is not detected at the time of delivery,
contact the carrier and request an inspection within 10 days
of the original delivery. Please call the Lafayette Instrument
Customer Service Department for a return authorization for
repair or replacement of the damaged merchandise.