Meilhaus Electronic redlab 1208fs, Руководство пользователя

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27
Chapter 4
Specifications
Typical for 25°C unless otherwise specified.
Specifications in
italic text are guaranteed by design.
Analog input
Table 1. Analog input specifications
Parameter Conditions Specification
A/D converter type Successive approximation type
Input voltage range for linear operation,
single-ended mode CHx to GND ±10 volts (V) max
Input common-mode voltage range for linear
operation, differential mode CHx to GND -10 V min, +20 V max
Absolute maximum input voltage CHx to GND ±28 V max
Input impedance 122KOhm
Vin = +10 V 70 microamperes (µA) typ
Vin = 0 V -12 µA typ
Input current (Note 1)
Vin = -10 V -94 µA typ
Number of channels 8 single-ended / 4 differential, software
selectable
Input ranges, single-ended mode ±10 V, G=2
Input ranges, differential mode
±20 V, G=1
±10 V, G=2
±5 V, G=4
±4 V, G=5
±2.5 V, G=8
±2.0 V, G=10
±1.25 V, G=16
±1.0 V, G=20
Software selectable
Software paced 250 samples per second (S/s) typ,
PC-dependent Throughput (Note 2)
Continuous scan 50 kilosamples per second (kS/s)
Channel gain queue Up to 16 elements Software configurable channel, range, and
gain.
Differential 12 bits, no missing codes Resolution (Note 3)
Single-ended 11 bits
CAL accuracy CAL = 2.5 V ±36.25 mV max
Integral linearity error ±1 least significant bit (LSB) typ
Differential linearity error ±0.5 LSB typ
Repeatability ±1 LSB typ
Source 5 milliamperes (mA) max CAL current
Sink 20 µA min, 100 µA typ
Trigger source Software selectable External digital: TRIG_IN
Note 1:
Input current is a function of applied voltage on the analog input channels. For a given input
voltage, V
in
, the input leakage is approximately equal to (8.181*V
in
-12) µA.