QTech Data Systems SMS Controller (SMSC) - Manual (Page 7)

QTech SMS Controller - Quick Start Guide – v1.4 – February 2014 7
www.qtech.co.nz Tel: 03 3663713
Aerial Notes
The reliability of all cellular products is dependent on good signal strength. Before
deciding on the Telco to choose, please check coverage. We suggest that a cellular
phone is taken to site, to check the signal strength
, ie how many “bars” are displayed.
The supplied stub aerial (P/N PD9230) should be suitable for locations with good
Telco coverage (full bars) and where the SMS Controller is in a non-conductive
enclosure (plastic etc).
Note
– If the SMS Controller is to be enclosed in a metal cabinet, or the site
does not have full cellular signal, an optional external aerial will be required.
Our recommended optional aerial for external mounting,
is P/N PD9214, shown here.
This has ~4.2m of coax and is a panel mounting aerial.
To mount unscrew the plastic flange at the base of the
aerial to expose the mounting stud.
Drill a 6.5-7.5mm clearance hole in the panel, feed the
mounting stud through and carefully reinstall.
Other higher gain aerials are also available as options
for sites with inadequate signal strength.
Note
– Do not cut or join the coax cable, this will increase losses and
impact reliability.
Text Message Types
The following provide you useful information about the system:
Send “status” SMSC replies with all of the I/O values/states
Send “stats” SMSC replies with how many SMS’s have been sent; how many
SMS’s have failed the signal strength (RSSI) measurements and when the SMSC
was last reset by cycling the power supply
Send “stats reset” SMSC will reset the status information
Send the SMSC any text (even a blank one) and it will confirm the acceptable
message formats for the control abilities.
Notes for using the SMSC to SMSC text ability
The ability to send control texts between SMSC ’s is very powerful. The following are
specific notes for these systems:

Only the digital outputs can be controlled (on/off/toggle/pulse), not analogues.

To receive status/stats info, you need to text the SMSCs individually:
remember to add all SMSC numbers to your phone
’s contacts.

Digital Output Reply confirmations. This doesn
’t work for SMSC to SMSC
control. Ensure
“Reply with confirmation of control”: is set to No.