3
Power switch
•
In center OFF position, RESP1 is powered down.
•
Set to ON position for normal operation.
•
Set to TEST to check battery: Battery is OK if
meter needle is above "B/OK" line. Otherwise,
replace battery.
Meter
•
In normal operation, meter needle moves with
each inspiration and expiration.
Size control
•
Adjusts amplitude of signal to meter and to
downstream recorder or plotting software.
Input connectors
•
The standard RESP1 features two 0.060" safety
jacks, black and red, that accept standard EEG
and EKG electrode leads.
•
The RESP1/EF and RESP1/EKG variants have an
additional, green jack for an EKG reference lead.
Output connectors
•
The standard RESP1 has one back-panel BNC
receptacle that supplies the respiration output
signal to downstream equipment.
•
The RESP1/EF and RESP1/EKG variants have an
additional BNC receptacle to supply the EKG
output to downstream equipment.
4
Electrode considerations
To improve recording quality,
•
place electrodes at level of maximum change in
chest diameter, usually along the mid-axillary lines
(left and right) at about the V5 or V6 level;
•
if signal is still weak, connect several electrodes
together in parallel to increase effective size.
•
If RESP1 signal is too strong for recording device,
you will need to attenuate RESP1 output. Contact
UFI for a simple resistive circuit that you can use
to decrease signal.
Using the standard RESP1
To measure respiration with EEG or EKG electrodes:
•
Lightly abrade skin at the selected locations, then
attach electrodes.
•
Connect electrodes to front-panel safety jacks.
•
Move power switch to TEST position. Battery is
OK if meter needle is above "B/OK" line (7 volts).
Otherwise, replace battery.
•
Move power switch to ON position. Meter will
swing off scale, then return to center (zero)
position in about 30 seconds.
•
Meter now indicates respiration; needle deflection
magnitude reflects respiration depth.
•
Attach recorder or other downstream device to
respiration output connector.
•
Output signal level ranges from 100 mV to 5 volts;
adjust with size control.
