Model DT33x-0700
4-Wire DC I/V Dual Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 34 -
http://www.acromag.com
- 34 -
https://www.acromag.com
Output (Each)
Unit outputs are short-circuit
protected from damage.
IMPORTANT:
Input and output
ranges may be rescaled to ranges
smaller than nominal, which can
increase potential error as
resolution and signal-to-noise
ratio are diminished for small I/O
spans. Each halving of the range
will drop resolution by 1 bit. In
general, rated accuracy can be
achieved for effective I/O
resolution equal or greater than
12-bit (1/4096).
Output Range:
Each output has a separate voltage and current output terminal that
share a return terminal. Only one output signal, voltage or current, may be loaded at
each channel at one time. Supported output ranges with over-range are shown in
Table 3 below.
Output Accuracy:
Better than
0.05% of span, typical, and ±0.1% maximum, with
nominal input and output ranges. This includes the effects of repeatability, terminal
point conformity, and linearization, but does not include sensor error.
Output Ripple/Noise:
Less than
0.1% of output span, typical.
Note (High Speed Acquisition):
Additional filtering at the load is recommended for
sensitive applications with high-speed acquisition rates. For excessive 60Hz supply
ripple with current output, a 1uF or larger bulk capacitor is recommended at the
load. High frequency noise is often reduced or eliminated by placing a 0.1uF or
0.01uF capacitor directly across the load (this can also raise RF immunity).
Output Ambient Temperature Effect:
Better than
80ppm/
C (±0.0080%/
C) over
the ambient temperature range (< ±20ppm/
C typical). This includes the combined
effect of zero and span drift for reference test conditions (see Input Specifications).
Output Resolution:
Each output is driven by a 16-bit voltage/current DAC from
Texas Instruments (DAC8760IPWPR) and its nominal range resolution is indicated in
Table 3 below. The effective I/O resolution of a channel will be the lowest resolution
of the input A/D or output D/A relative to the selected and scaled I/O range.
16-bit
Table 3: Nominal Output Ranges and Resolution w/Over-Range
DAC
Voltage Output
Current Output
COUNT
0-5V
0-10V
±5V
±10V
0-20mA
4-20mA
0
0V
0V
-5.5V
-11V
0mA
0mA
2979
-5.0V
-10V
10923
4mA
4mA
54612
20mA
20mA
59577
5.0V
10.0V
62556
+5.0V
+10V
65535
5.5V
11.0V
+5.5V
+11V
24mA
24mA
RES
1/59577
1/59577 1/59577 1/59577 1/54612
1/43689
1 lsb
83.925uV
167.8uV
167.8uV
335.7uV
0.34132uA
0.34132uA
%Span
0.001678%
0.001707%
0.002133%
Output Response Time:
The maximum time per input filter setting measured for the
output to reach 98% of its transition with a step change in the input signal while
driving output current to a 500
load, or voltage to a 10K
load with a 24V supply
and the input set to No filter, Low filter, Medium filter, and High filter.
Typical Output Response Time to 98% of Transition Per Input Filter
None
Low
Medium
High
25ms
41ms
140ms
1140ms
Output Load:
The voltage outputs
can drive loads down to 1KΩ minimum.
The
current outputs can drive 21mA DC into 0-
525Ω.
