User's Guide

TW112 User guide.docx 4 of 6
MDT Configuration
All MDT come from the factory with a default factory-set configuration; there is no user
changeable setup of an MDT. It need only be connected to the meter and turned on. A
number of different MDTs are available, our most popular being a single pulse input unit with a
one-hour transmission interval. See our web site for other variations available.
MDT and Repeater devices come from the factory in a powered off state. They can be powered
on using a hidden button under the Tehama Wireless logo.
The big circle in the photo below shows where the hidden button is located on the enclosure. It
may take a few times to get the feel of the button, but an LED to the left gives you feedback
when the button is pushed.
Turn ON or Off (MDT only):
- Press & hold button until LED blips off, then release.
Power-up LED Flashing:
- Listening for DCAP or Repeater: LED flashes slowly
- Trying to Connect to DCAP: Flashing changes from slow to fast
- Successful Connection: LED stays solid for 10 seconds.
- If NOT successful, LED goes out without the 10 second on
Check the status of an MDT or Repeater by tapping the button
- Unit is OFF: Two flashes after button is released
- Unit is Asleep and NOT connected to Network: One flash only
- Unit will wake up within one hour and try to re-connect to
Network. This is usually an indication of poor placement or
inadequate Repeater coverage.
- Unit is Connected and operating normally: LED on for 10 seconds
- Green is good link, Orange an OK link, Red is poor link
Reset Count (MDT Only): Press and hold button until power-up
flashing sequence starts (12-15 seconds)
MDT to Meter wiring
Refer to our many wiring diagrams on our
web site for wiring instructions from the many
different meters available.
Device Placement
Warning: All radio devices should be placed at least 8 inches (20 cm) away from
people in order to minimize RF exposure.