Section 3 | Installation
©
2022
– Valeport Ltd
Page | 6
Real Time Operation
For real time data output, connect the signal cable to the 10 pin Subconn connector on the instru-
ment. All Valeport signal cables include a suspension point for strain relief, and a similar arrange-
ment is recommended for other cable types. Connect the top end of the cable to a PC using the
appropriate method as described above.
Self-Recording Operation
For self-recording only deployments, the instrument is switched on by insertion of the SubConn
style switch plug. This plug must be inserted for the unit to operate.
the switch plug is NOT just a dummy plug; it contains links between some of the pins as de-
scribed in Section 5, which are used to turn the instrument on
LED Flashing Sequence
The M
IDAS
ECM is fitted with an LED visible through a polycarbonate window in the battery pack.
The LED will flash as detailed below to indicate various states.
Continuous ON for 15 seconds Occurs when the Switch Plug or cable is connected, indicating
that instrument is on and awaiting communication
1Hz Continual Flashing
Insufficient Power. Change internal batteries, or completely re-
move external power, and apply higher voltage
Continuous ON for 2 seconds
Indicates the start of Burst Sampling pattern
5 Rapid Flashes
Indicates the end of Burst Sampling pattern. The duration of the
burst may be calculated as the time between the start and stop
LED sequences, less 5 seconds.
3.3. Altimeter Configuration
Systems can be specified with Tritech PA series Altimeters. For the Midas ECM to correctly com-
municate with the Altimeter, it needs to be configured as follows:
Communication
RS232
Use
Free Run ASCII/Zero No Detect (ZNE)
Data Format
9600, 1, 8, 1
Power
12V
