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BIOPAC Systems, Inc.
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SPECIFICATIONS
Specification
MP35 Unit
MP30 Unit
Front Panel
ELECTRODE CHECKER
Resistance Range (Vin+ and
Vin- to GND)
0-100 K
Ω
0-100 K
Ω
ANALOG INPUTS
Number of channels
4 isolated (front panel CH 1–CH 4),
2 unisolated (auxillary)
4 (front panel CH 1–CH 4)
SAMPLE RATE
Maximum
Minimum
Trigger Input
Threshold
100K samples/second
1 samples/second
Analog or digital channel
Adjustable threshold; Positive or
Negative Trigger
2K s/s (8K aggregate on four ch.)
1 samples/second
CH 4 input only
Adjustable threshold; Positive or
Negative Threshold
A/D resolution (before digital
filtering)
24-bit
10-bit
Signal to noise ratio
> 90 dB (nominal)
> 90 dB
Voltage resolution Gain
dependent
1.192 microvolts /bit (Gain 10) to
0.024 nanovolts /bit (Gain 50,000)
0.400 microvolts/bit (Gain 100) to
0.200 millivolts/bit (Gain 25,000)
Input voltage range (Gain
dependent)
400 microvolts to 2.0 Volts p-p
4.0 millivolts to 0.2 Volts p-p
Input accuracy
±0.01% of Full Scale Range (FSR)
±0.05% FSR
Input protection; current limited
± 1 mA/V
± 1 mA/V
Maximum Input Voltage
(between Vin+ and Vin-)
2V p-p
130mV p-p
Differential Input Impedance
(between Vin+ and Vin-)
2 M
Ω
2 M
Ω
Filters (automatic or user
adjustable)
3 two-pole IIR digital filters per
channel
3 two-pole IIR digital filters per
channel
Common Mode Input
Impedance (between Vin+/Vin-
and GND)
DC
AC (50/60 Hz)
11 M
Ω
1,000 M
Ω
11 M
Ω
1,000 M
Ω
Gain ranges (automatic preset
or user adjustable)
10 – 50,000
100 – 50,000
Baseline adjustment
(automatic or user adjustable)
Gains 10, 20, and 50: ±100mV
Gains 100 to 50,000: ±10mV
±10mV all Gains
Electrode offset potential
tolerance
Gains 10, 20, and 50: ±2V
Gains 100, 200, 500: ±200mV
Gains 1,000 to 50,000: ±80mV
±70 mV all Gains
Back Panel
ANALOG OUTPUT
Number of channels
D/A resolution
Accuracy
Output impedance
Output voltage
Output drive current
1
12 bits
±0.0125% of FSR
50
Ω
0 - 4.096 V
±10 mA maximum
1
8 bits
±0.2% of FSR
50
Ω
0 - 5.000 V
±100 mA maximum
