Cole-Parmer 18200-20 Specifications
Specifications
18200-20
Cole-Parmer Instrument Company
625 East Bunker Court
Vernon Hills, Illinois 60061-1844
(847) 549-7600
(847) 247-2929 (Fax)
800-323-4340
www.coleparmer.com
e-mail: techinfo@coleparmer.com
Document Revision 1.0, August, 2008
© Copyright 2008 Measurement Computing Corporation, 1608FS1-0
Specifications
Parameter
Conditions
Specification
A/D converter type
16-bit successive Approximation type
Number of channels
8 single-ended
Input configuration
Individual A/D per channel
Sampling method
Simultaneous
Absolute maximum input voltage
CHx IN to GND.
±15 V max
Input impedance
100 MOhm, min
Input ranges
Software selectable
±10 V, ±5 V, ±2 V, ±1 V
Sampling rate
Scan to PC memory
0.6 S/s to 50 kS/s, software
programmable
Burst scan to 32 k sample FIFO
20 S/s to 50 kS/s, software
programmable
Throughput
Software paced
500 S/s all channels
Scan to PC memory (Note 1)
= (100 kS/s) / (# of channels), max of
50 kS/s for any channel
Burst scan to 32 k
sample FIFO
= (200 kS/s) / (# of channels), max of
50 kS/s for any channel
Gain queue
Software configurable. Eight elements,
one gain element per channel.
Resolution
16 bits
No missing codes
15 bits
Crosstalk
Signal DC-25 KHz
-80 dB
CAL output
User calibration source
0.625 V, 1.25 V, 2.5 V, 5.0 V, software
selectable
CAL output accuracy (Note 2)
±0.5% typ, ±1.0% max
CAL current
±5 mA max
Trigger source
Software selectable
External digital: TRIG_IN
Range
Accuracy (mV)
±10 V
5.66
±5 V
2.98
±2 V
1.31
±1 V
0.68
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog input section
Table 1. Analog input specifications
Note 1: Maximum throughput scanning to PC memory is machine dependent. While the majority of XP
Note 2: Actual values used for calibration are measured and stored in EEPROM.
equipped PC’s we tested allowed acquisition at the maximum rates, a few would not. The lowest
maximum rate we observed on an XP equipped PC during multi-channel testing was 95 kS/s,
aggregate. The rates specified are for Windows XP only. Maximum rates on operating systems
that predate XP may be less and must be determined through testing on your machine.
Table 2. Calibrated absolute accuracy
1
18200-20 Specifications
Range
% of Reading
Gain error at FS (mV)
Offset (mV)
±10 V
0.04
4.00
1.66
±5 V
0.04
2.00
0.98
±2 V
0.04
0.80
0.51
±1 V
0.04
0.40
0.28
Range
Typical counts
LSBrms
±10 V
10
1.52
±5 V
10
1.52
±2 V
11
1.67
±1 V
14
2.12
Digital type
CMOS
Number of I/O
8 (DIO0 through DIO7)
Configuration
Independently configured for input or output
Pull-up/pull-down configuration
All pins pulled up to Vs via 47 K resistors (default).
Positions available for pull down to ground. Hardware
selectable via zero ohm resistors as a factory option.
Input high voltage
2.0 V min, 5.5 V absolute max
Input low voltage
0.8 V max, –0.5 V absolute min
Output high voltage (IOH = –2.5 mA)
3.8 V min
Output low voltage (IOL = 2.5 mA)
0.7 V max
Power on and reset state
Input
Parameter
Conditions
Specification
Trigger source (Note 3)
External digital
TRIG_IN
Trigger mode
Software selectable
Edge sensitive: user configurable for
CMOS compatible rising or falling edge.
Trigger latency
10 µs max
Trigger pulse width
1µs min
Input high voltage
4.0 V min, 5.5 V absolute max
Input low voltage
1.0 V max, –0.5 V absolute min
Input leakage current
±1.0µA
Table 3. Accuracy components - All values are (±)
Table 4 summarizes the noise performance for the 18200-20. Noise distribution is determined by gathering 50
K samples with inputs tied to ground at the user connector. Samples are gathered at the maximum specified
sampling rate of 50 kS/s.
Table 4. Noise performance
Digital input/output
Table 5. Digital I/O specifications
External trigger
Note 3: TRIG_IN is a Schmitt trigger input protected with a 1.5K Ohm series resistor.
Table 6. External trigger specifications
2
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