Model DT33x-0700
4-Wire DC I/V Dual Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 21 -
http://www.acromag.com
- 21 -
https://www.acromag.com
Configuration
…
HELP
–
You can press
[F1]
for Help on a selected or
highlighted field or control. You can also click the
[?]
button in the upper-right hand corner of the screen
and click to point to a field or control to get a Help
message pertaining to the item you pointed to.
If the scaled input/output zero and full-scale points
are chosen too close together, performance will be
degraded.
The ranges indicated are nominal and may be rescaled to the
output, such that you may use only a portion of the input range to
drive the transmitter current or voltage output. Because rescaling
it smaller will proportionally decrease its resolution, you should be
careful to avoid going smaller than 12-bits to achieve rated
performance. Each halving of the nominal range will reduce
resolution by 1 bit. Decreasing range resolution can magnify error,
especially noticeable for very small input ranges which degrade
the input signal-to-noise ratio and the resolution of the analog-to-
digital input conversion.
Select the Input Filtering
…
You may select the level of digital filtering to apply to the input
channel as Low, Medium, High, or None (No digital filtering). The
respective I/O response times are indicated in parenthesis next to
your filter selection. Note that higher filter levels result in lower
average noise, but with slower I/O response times. Always set the
input filter as desired before calibrating an input.
Select the nominal Output Signal Range, Current or Voltage...
Transmitter channels may each drive current or voltage (on
separate channel output terminals), but not both signals
simultaneously. Select the nominal output signal type and range
(the opposite signal type is disabled). Only one channel output
terminal, current or voltage may be loaded at one time (current
may drive up to 525Ω, voltage may drive 1KΩ or higher loads).
Set the Scaled I/O Sub-Range Zero & Full-Scale Endpoints
…
You may rescale a selected input or output range differently for
each channel and use a smaller portion of the nominal ranges to
drive an input to the output. Be careful as you scale ranges not to
reduce the nominal range too much, as resolution will be
proportionally diminished and I/O channel noise/error will be
magnified (each halving of a range reduces its respective
resolution by 1 bit).
In the Input Scaling fields for input and output, set the input signal
minimum/zero value inside full range to correspond to the output
range minimum/zero value. Set the input signal maximum/full-
scale value inside its full range to correspond to the output range
maximum/full-scale value. You can optionally swap input levels to
configure a reverse acting output response if desired. Note that
some under and over-range is built into every I/O range selection
and these limits vary by range.
Once you have made your configuration selections, click
[Send I/O
Config]
to write them to the module. Read the Status of your
configuration transmission
in the “Status” field.
Alternately, you
may click
“
F
ile”
in the upper left corner to save your configuration
settings to a file on your PC, for later reference.
