Datasheet

2200 System
Vishay Micro-Measurements
Document Number: 11262 [e-mail] www.vishaymg.com
Revision 18-Oct-06 19
Signal Conditioning Amplifier
BALANCE
Method: Electronically injected automatic balance.
Range: ±15 000µ
ε (7.5mV/V) RTI (X2 with internal
jumper).
Resolution: 0.50µ
ε RTI (X2 with internal jumper)
Balance Time: 4 seconds typical; 8 seconds max.
Accuracy: ±2mV RTO; ±2µ
ε RTI.
Balance Trim: ±375µ
ε (188µV/V) RTI.
Storage: Digital with battery backup. Battery life 3-5
years.
Activation: Activated by front-panel switch or by optically
isolated remote switch or low TTL level.
CALIBRATION
Four internal shunt calibration resistors, ±0.1%
tolerance:
174.8K 1000µ
ε (0.50mV/V) 350Ω bridge;
874.8K
200µε (0.10mV/V) 350Ω bridge;
59.94K 1000µ
ε (0.50mV/V) 120Ω bridge.
Activated by front-panel switch, or by optically isolated
remote contact closure or low TTL level.
Internal selector switches for selection of two-point
unipolar, bipolar, or two-point double shunt calibration
circuits.
Calibration resistors plug into fixed terminals (no
soldering).
SIZE & WEIGHT
7 H x 1.71 W x 17.88 D in (178 x 43 x 454mm).
3.7lb (1.67kg).
2231 DIGITAL READOUT MODULE SPECIFICATIONS
DISPLAY
LED’s with ±19 999 counts full scale.
Overload Indications: Flashing zeroes and polarity.
SENSITIVITY/RESOLUTION
1mV per count.
INPUT CIRCUIT
Amplifier Configuration: Single-ended floating
common.
Input Impedance: 2MΩ nominal.
Rear Connections: 8 channel via two INPUT connectors
on the 2250A Rack Adapter or 2260B Portable Enclosure.
Front Connections: 1 channel standard banana jacks.
Input Selection: 9-position switch.
PEAK RETENTION CAPABILITY
Both positive-going (MAX) and negative-going (MIN)
peaks are stored in two separate circuits independent of
DISPLAY MODE selection. (The storage capability is
always active.)
DISPLAY MODES
TRACK: Display follows input voltage.
PEAK HOLD: Displays one of the stored peak values.
MAX: Selects the MAX stored value.
MIN: Selects the MIN stored value.
ACCURACY
Step Input: ±0.1% ± 4 counts for step input up to 15V
>4msec duration.
Repetitive Step Input: ±0.1% ± 4 counts for repetitive
step inputs of >300µsec duration. Minimum number of
steps required: 4msec ÷ pulse duration.
Repetitive Sine Wave: ±5% ± 4 counts for repetitive sine
wave input of <1000Hz ± 0.5% ± 4 counts for repetitive
sine wave input of <100Hz.
HOLD STABILITY
<1 count/minute typical, 2 counts/minute maximum at
+75°F (+23°C), averaged over 5-minute period.
RESET CAPABILITY
Manual or automatic timed reset of MAX and MIN peaks.
Optoisolator input requires 2 to 30V (<5mA @ 5V) for
0.1msec minimum.
POWER
115/230Vac, 50-60Hz, 10W max.
SIZE & WEIGHT
7 H x 3.44 W x 17.88 D in (178 x 87.5 x 454mm).
4.4lb (2.0kg)
All references to microstrain assume a gage factor of 2.00.
All specifications are nominal or typical at +23°C unless
noted.