|
Model P122 rackmount style
|
Two versions
of this AC/DC Strain Gage Amplifier feature high gain, low noise,
stabilized DC amplification with versatile input switching to permit
operation as an AC amplifier.
They are intended
to provide a signal conditioning interface for data acquisition
systems, oscilloscopes and other devices. The large LED display
continuously monitors the output and simplifies setup and calibration
procedures.
Transducer excitation,
balancing circuitry, amplification and filtering are standard features.
With appropriate sensors, the P122 can process signals such as pressure,
force, temperature and many others. The AC input switch positions
provide an excellent interface for EEG, EMG, EOG, ECG and other
bioelectric signals.
Some typical
applications include multiple channel in-vitro tissue bath
studies, cardiovascular measurements, pulmonary mechanics, gut motility
studies and many more.
A complete,
stand-alone data acquisition and analysis system can be created
by combining the P511 High Performance AC Amplifier with the P122
AC/DC Preamplifier and the PolyVIEW™ Data Acquisition and Analysis
Software Package. The P122 is designed to take up less than 2 inches
of rack space, allowing a complete, powerful data acquisition system
to be configured in a minimum of space.
The CP122 is
enclosed in a rugged all-metal chassis that is easy to stack vertically
or horizontally. Optional rackmount hardware allows two units to
be mounted side-by-side in a standard 19" rack while using only
3.5" of vertical space.
The P122 and
CP122 amplifiers must be used with a Grass medical-grade regulated
power supply.
The power supplies provide highly regulated ±12 VDC.
All models are CSA/UL listed for medical device safety.
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| SPECIFICATIONS
|
| Amplification
|
| Amplification |
|
50
minimum to 100,000 maximum |
| Amplification
Settings |
|
6-position
step switch.
Settings of 2,000, 5,000, 10,000, 20,000, 50,000 and 100,000 |
| Vernier
Control |
|
Ratio
of 40 to 1 |
| Input
Selections |
| DC |
|
For
DC bioelectric potentials from electrodes and for interfacing transducers |
| AC |
|
For
AC coupling of bioelectric potentials from electrodes and AC coupling
transducers. Time Constants of 0.01, 0.1, 1 and 10 seconds, switch
selectable |
| Input
Impedance |
|
1
Mohm, differential |
| Balance
Voltage |
|
±200
mV DC, ±5% accuracy |
| Coarse
Control |
|
3-position
toggle switch: x0.1, x1.0, x20 |
| Fine
Control |
|
10-turn
potentiometer provides 0.1, 1.0 and 20 mV/turn |
| Stability |
| Drift |
|
Less
than 1 µV/hr after thermal stabilization |
With
Grass FT03
Force Transducer |
|
5
mg/hr (typical) |
| Filters
|
High
(cutoff frequencies, -6 dB) |
|
3000,
1000, 300, 100, 30, 10, 3, 1, 0.3, 0.1 Hz |
| Line
Filter |
|
Notch-type
filter (50/60 Hz), switch selectable |
| Time
Constants |
|
0.01,
0.1, 1 and 10 seconds, switch selectable. Corresponding to frequencies
of 10, 1, 0.1 and 0.01 Hz |
| Output |
| Output
Connector |
|
BNC,
front and rear panels |
| Load
Tolerance |
|
5
kohms or greater |
| Maximum
Output |
|
±5.0
volts |
| Display |
|
3-digit
LED, minimum resolution: ±10 mV |
| Set
Output |
|
Pushbutton
allows output to be adjusted to zero |
| Noise |
|
10
µV peak to peak, referred to input (DC to 3 kHz) |
CMR
(Common
Mode Rejection) |
|
20,000:1
(86 dB) at 100 Hz |
| Physical
Size |
| CP122
Bench-top |
|
8.625"
W x 3.5" H x 8.75" D
(21.9 cm x 8.9 cm x 22.2 cm) |
| Weight |
|
2
lbs. (0.91 kg) |
| To
Rackmount |
|
Order
kit CPRK1 for a single amplifier, or CPRK2 for mounting two amplifiers
side by side |
| P122
Rackmount |
|
19"
W x 1.75" H x 8" D
(48.3 cm x 4.45 cm x 20.3 cm) |
| Weight |
|
3.125 lbs. (1.44 kg) |
| Regulatory
|
| |
|
ETL
listed to UL2601.1 and CSA 22.2 #601.1
CE marked to MDD, Class IIa, I Type B |
|
|
Model CP122 bench-top
style
|
| FEATURES
& BENEFITS |
|
•
Amplification from 50 to 100,000 for processing
of a wide range of bioelectric signals
• AC and DC Input
extends versatility by providing excitation for transducers
and, with convenient switching to AC, supports EEG, EMG, ECG
and other signals
• ± 200 mV Balance Voltage
simplifies transducer balancing and provides precise measurements
of offset potentials
• 10 Low Pass filter positions
from 0.1 Hz to 3000 Hz plus line filter tailors
the bandwidth to the signal and optimize the A/D process
• LED output display
shows instantaneous data values and simplifies setup and calibration
• Very low drift; less than 1microvolt/hour
minimizes time-consuming rebalancing procedures
|
| ORDERING
INFORMATION |
| Model
P122 |
|
AC/DC
strain gage preamplifier, 19" rackmount cabinet, includes manual
(power supply required) |
| Model
CP122 |
|
AC/DC
strain gage preamplifier, bench-top cabinet, includes manual
and power supply cable (power supply required) |
| Model
RPS312RM |
|
Medical-grade
power supply, 19" rackmount cabinet for use with P122 rackmount
model |
| Model
RPS312 |
|
Medical-grade
power supply, bench-top module for use with CP122 bench-top
model |
|
Optional Accessories: |
| Model
F-7IC3/REV1 |
|
3-lead
input cable, 16-foot length (4.8 m) |
| Model
SRS |
|
Stimulate/Record
Switching Unit |
| Model
TAC-7 |
|
Transducer
cable, 8-foot length (2.4 m) for connection to most Grass transducers
|
| Model
CAB-51755 |
|
Power
supply cable for "daisy-chaining" power to additional
amplifiers |
|
Model CPRK1 |
|
Rackmount
conversion kit to mount one CP series amplifiers in 19" rack
|
| Model
CPRK2 |
|
Rackmount
conversion kit to mount two CP series amplifiers side-by-side
in 19" rack |
| |
|
See
also: rackmount
cabinets and carts |
|
|
