MicroTrap™ Operations Manual - Edition 4.4
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5.4 MicroTrap™ Setup Procedure for Recording Voltage Signals
Now that your sensor(s) are placed and connected to the MicroTrap™ VOD/Data Recorder, it is time to being the recording sequence.
Remember that the MicroTrap™ VOD/Data Recorder should already be programmed with the appropriate number of tests, number of
channels per test, record rates, trigger level, and pre-trigger memory allocation. Refer to the DAS™ Data Acquisition Suite Software
Manual if required.
The procedure to record a new test consists of the following steps:
1. Ensure that the coaxial cable coming from the gauge(s) is connected to the Scope input connectors (labeled 1 2 3 4) on the
MicroTrap™ VOD/Data Recorder.
2. Turn the MicroTrap™ VOD/Data Recorder ON. The STATUS light will illuminate and begin to flash quickly for approximately 2
seconds while the MicroTrap™ VOD/Data Recorder conducts some internal verification testing. If the MicroTrap™ VOD/Data Recorder
passes the internal verification tests, the STATUS light will begin to flash slowly (Stand-by mode). The User can go on to Step 3.
CAUTION: Do not turn OFF the MicroTrap™ VOD/Data Recorder until after the internal verification testing has been complete or an
unrecoverable error can occur and the unit may be required to be sent in for service. If the MicroTrap™ VOD/Data Recorder fails to
pass the internal verification tests, the STATUS light will flash three times in succession and EE will appear on the LED. If this happens,
switch the MicroTrap™ VOD/Data Recorder OFF , wait several seconds, and turn the MicroTrap™ VOD/Data Recorder ON again. If
the MicroTrap™ VOD/Data Recorder continues to fail the internal verification tests, then contact MREL as the MicroTrap™ VOD/Data
Recorder requires service.
3. Press the NEXT TEST button; the STATUS light will stop flashing and will remain illuminated (Active mode).
4. Press the TOTAL TESTS button to see the number of tests that the MicroTrap™ VOD/Data Recorders memory has been divided into,
using the DAS™ Data Acquisition Suite Software.
IMPORTANT
MREL recommends setting the Number of Tests = 16 for when recording short duration events. This reduces the quantity of data
collected per test and conserves the computer’s disk space. At a 1 MHz recording rate, a MicroTrap™ VOD/Data Recorder
with standard memory will record for a total of 65 ms per test if the Number of Tests = 16 and the Number of Channels = 4.
This is sufficient recording time for many short duration events. See Section 4.6 for more information on memory.
IMPORTANT
If you do not wish to keep the existing data in memory, then you can either clear the MicroTrap™ VOD/Data Recorders
internal memory using the DAS™ Data Acquisition Suite Software or by following this procedure:
a. Turn ON the MicroTrap™ VOD/Data Recorder.
b. Press the NEXT TEST button to put the MicroTrap™ VOD/Data Recorder in Active mode. The STATUS light
should be on.
c. Simultaneously press the NEXT TEST and STOP buttons and hold them down. The LED will display a blinking
dE. Release the buttons.
d. Simultaneously press the START and STOP buttons and hold them down. The LED will display dE without
blinking. Release the buttons. All of the data in the MicroTrap™ VOD/Data Recorders memory will be deleted.
e. Turn OFF the MicroTrap™ VOD/Data Recorder. Turn ON the MicroTrap™ VOD/Data Recorder and pressing the
TOTAL TESTS button and then the REMAINING TESTS button will confirm that these numbers are equal and that
all of the test data in the MicroTrap™ VOD/Data Recorders memory has been deleted.
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