Lake Shore 372, Руководство пользователя, Страница: 29 / 214

1.8.2 Control Input 17
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Connectors 6-pin DIN (current out), 6-pin DIN (voltage in), and
DA-15 (scanner control)
Supported scanners Lake Shore 3726 and 3708
1.8.2 Control Input Input type AC, four-lead differential, resistance
Number of inputs 1
Measurement units
)
, K (with temperature curve)
Resistance ranges 6 ranges from 2 k
)
to 632 k
)
(excitation dependent)
Maximum update rate 10 rdg/s (single range)
Range change settling 3 s + filter settling
Resolution Sensor and range dependent, refer to Control Input
Specifications table
Accuracy Sensor and range dependent, refer to Control Input
Specifications table
Temperature coefficient ±0.0015%/°C of reading
Maximum lead resistance 100
)
+ 10% of resistance range per lead
Isolation Isolated from chassis, common to measurement
input
Lead connections V+, V-, I+, I-, shield
Common mode rejection Matched impedance voltage input and current
output
Excitation Sinusoidal AC current source
Excitation frequency 9.8 Hz, 11.6 Hz, 13.7 Hz, 16.2 Hz (default), or 18.2 Hz
Excitation currents 6 ranges from 316 pA to 100 nA RMS
Excitation accuracy ±8% of nominal for 316 pA and 1 nA ranges;
±2% of nominal for the other ranges
Power up current protection Current output shunted on power up
Voltage input range 200 µV
Voltage input over-range 20%
Maximum input voltage noise 20 nV/
x
Hz
Range selection modes Manual, standard autorange, and Rox™ RX-102B-CB
optimized autorange
Filter 1 s to 200 s settling time, 1% to 80% filter window
Additional software features Min/Max reading capture
Supported sensors NTC resistive sensors (optimized for
Rox™ RX-102B-CB sensor)
Minimum temperature Down to 10 mK using a Rox™ RX-102B-CB sensor in a
well-designed system
Connector 6-pin DIN
1.8.3 Temperature
Conversion Sensor temperature coefficient Negative or positive
User curves Up to 39 CalCurves™ or user curves (200-point)
Curve entry Via front panel or computer interface
Curve format
)
/K, Log
)
/K
Curve interpolation Cubic spline, linear
1.8.4 Sample Heater
Output Type Variable DC current source
Control modes Closed loop PID, PID zones, open loop
Setpoint units
)
, K (with temperature curve)
D/A resolution 16-bit
Ranges 100 mA, 31.6 mA, 10 mA, 3.16 mA, 1 mA, 316 µA,
100 µA, 31.6 µA
Output compliance voltage (min) ±10 V
Maximum power of output ranges 1 W, 100 mW, 10 mW, 1 mW, 100 µW, 10 µW, 1 µW,
0.1µW
Resistance range 1
)
to 2 k
)
, 100
)
for maximum power