|
Battery-powered
AC Preamplifier
for Biological/Physiological studies in both student and research laboratories
|
The P55 is a
low-cost, battery-powered, differential AC preamplifier designed
to record a wide variety of bioelectric phenomenon including EEG,
EKG, EMG, etc. The high input impedance, high common mode rejection
and low noise help to ensure clean, quiet recordings. Flexible low
and high filters allow the investigator to tailor the frequency
response of the unit to isolate the signals of interest. Simple,
clear controls make setup and operation of the P55 easy, even for
the novice.
The unit is
housed in a rugged, compact cabinet and is powered by two 9-volt
alkaline batteries.
Not intended
for use on humans.
|
| ORDERING
INFORMATION |
| Model
P55 |
|
Differential
AC preamplifier, includes manual, 9 VDC alkaline batteries. Input
cable not included |
| Optional
Accessories: |
| Model
CAB-51761 |
|
3-lead input cable, 8-foot length (2.4 m) |
| Model
SRS |
|
Stimulate/Record
Switching Unit |
|
|
| FEATURES
& BENEFITS |
| •
|
Amplification
from 1 to 10,000 for processing a wide range of bioelectric
signals |
| •
|
Low
Noise improves signal fidelity and resolution |
| •
|
Eight
high pass and seven low pass filters tailor the bandwidth
to the signal and improve the signal-to-noise ratio |
| •
|
Line
Frequency Filter reduces or eliminates line frequency
interference |
| •
|
Battery
Operation, noise-free operation allows placement
close to the preparation |
| SPECIFICATIONS
|
| Amplification |
| Gain |
|
5-position
switch
Settings of x1, x10, x100, x1,000, x10,000 |
| Filters
|
Low
Frequency
(-6 dB) |
|
0.1,
0.3, 1, 3, 10, 30, 100, 300 Hz |
High
Frequency
(-6 dB) |
|
0.01,
0.03, 0.1, 0.3, 1, 3, 10 kHz |
| Line
|
|
50/60
Hz notch filter (internally selectable) |
| Input
|
| Input |
|
200
Mohm differential, capacity coupled |
CMR
(Common Mode
Rejection) |
|
80
dB minimum, 100 Hz |
| Noise |
|
10
µV peak to peak, R.T.I., 1 to 10 kHz, inputs shorted |
| Input
Connectors |
|
Front
panel; binding posts
Rear panel; DIN style connector, accepts optional Model CAB-51761
shielded cable with SAFELEAD® 1.5 mm diameter recessed
male pins
|
| Output |
| Output |
|
DC
coupled, single-ended |
| Maximum
Output |
|
8
volts peak to peak, undistorted into 100 kohm load |
| DC
Offset |
|
<10
mV |
| Output
Connector |
|
BNC
|
| Calibrator
|
| Switch
selectable |
|
10
voltage selections from 20 µV to 20 mV (1, 2, 5 steps) |
| Power |
| Battery |
|
two
9-volt alkaline |
| Battery
Life |
|
150
hours minimum, REPLACE BATTERY indicator lights when battery
voltage discharges to approximately 6 volts nominal |
| Physical
Size |
| Physical
Size |
|
6"
W x 3.25" H x 4.25" D
(15.3 cm x 8.3 cm x 10.8 cm) |
| Weight |
|
1
lb. 10 oz. (0.73 kg) |
|
|
