RTI Barracuda User Manual

2. Description of the Barracuda
Hardware and Specifications
2012-10/4.3A
31
Barracuda & QABrowser Reference Manual
Bias voltage (valid for EMM-Bias/BiasB/BiasW)
Range
-300 to +300 V (+20/-10 V)
Ripple
- Bias, BiasB
- BiasW
max 100 mV, typ. 30 mV
max 30 mV, typ. 20 mV
Max residual voltage (when LED off)
<1 V
Max continuous output current
32 µA (at ±300 V), not touchable
Atmospheric pressure sensor (valid for EMM-BiasW)
Measuring range
60 – 110 kPa (0.6 – 1 bar)
(resolution 0.1 kPa)
Inaccuracy (95-105 kPa)
±0.7 kPa
Inaccuracy (80-95 kPa)
±2.0 kPa
The EMM is a charge integrating device, making up to 2000 integrations per second.
This means that no "minimum" pulse width is needed to measure a charge, only the
minimum charge range needs to be reached. Current however, is calculated as the
average current for each integration cycle, see also Waveforms and Triggers . If the
pulse width is smaller than the integration time, the EMM will not be able to calculate
the peak current.
Measuring range and inaccuracy for charge
Parameter
Effective range
Total inaccuracy
Charge
- Unipolar (pos. or neg.)
- Bipolar
50 fC – >100 mC
at least ±50 mC
±1 % or ±12.5 fC
±0.5 % above 100 pC
Charge resolution
Reading×10
-6
or 50 aC
–
Measuring range and inaccuracy for current and irradiation time
Parameter
Effective range
Total inaccuracy
Noise
Current EMM-1Ch/2Ch
- Unipolar (pos. or neg.)
- Bipolar
2 pA – 10 µA
-5 µA – +5 µA
±1 % or ±0.5 pA
±0.5 % above 100 pA
±50 fA
Current EMM-Bias/BiasB
- Unipolar (positive)
- Unipolar (negative)
- Bipolar
2 pA – 10 µA
-2 pA – -4.8 µA
-4.8 µA – +5.2 µA
±1 % or ±0.5 pA
±0.5 % above 100 pA
±50 fA
Current EMM-BiasW
- Unipolar (positive)
40 fA – 10 µA
(max neg. -40 nA)
±1 % or ±4 fA
±0.5 % above 100 pA
±1 fA
Max physical
input current
500 µA
–
–
Current resolution
–
102

RTI Barracuda Specifications

General

Brand	RTI
Model	Barracuda
Category	Medical Equipment
Language	English