MOBILTEX® DATA LTD.
Calgary, Alberta
www.corTalk.com
TITLE:
RMU1 Installation and Configuration Guide
DOCUMENT NO.:
RMU1-MAN-001
SHEET:
43 of 53
REV:
1.14
6.3.6
Options
Several options are available that affect the operation of the RMU1.
The ‘Enable Cap Report’ option allows the RMU1 to send an exception report to corView whenever a transition is
detected on the cap detection sensor. The cap detection sensor is an infrared proximity sensor unit that detects an
installed cap by the amount of infrared light reflected by the cap. If this option is enabled, every time the cap is removed
or installed, a reading set will be taken and sent to corView. As with other exception messages, a maximum of 6
messages can be sent in a given 12 hour window; any additional transitions will be ignored. This feature requires airtime
Option 2 – “Add cover removal exception reports to any plan” (RMU1OPTION2).
The ‘Disable Cap Detector’ option disables the cap infrared proximity sensor. This option is typically used to increase
battery life on the RMU1. When cap detector is disabled, the LCD display will not turn on if the test station cap is
removed. To temporarily turn on the LCD when this option is checked, apply a magnet near the green measurement
terminal block.
‘Enable Datalogger’ allows readings to be stored to local non-volatile memory. This option is usable only if the factory
datalogger option (Option 3) is enabled on the RMU1. The stored readings can be extracted by using the ‘Extract
Datalogger Mem’ button under the ‘RMU1 Communications and Status’ area. The datalogger memory will hold
approximately 174,000 readings sets before filling. At a 1 hour measurement rate, approximately 20 years of
measurement data can be stored locally.
‘Enable AC Peak Current Detector’ enables the AC peak current density detector mode on the RMU1. Firmware v1.10
or higher is needed. When enabled, the RMU1 will, while sleeping, sample the coupon current density at set intervals
(default 20s) and trigger a unit wake-up and full measurement if the sampled AC current density value is above the
associated slot high limit (must be set for operation). If activated, short AC transients (<30s) can be captured by the
RMU1 and exception messages sent to corView. When the signal again drops below the threshold value, the RMU1
requires a minimum amount of time (default 5 min) of signal below threshold before a clear exception is sent to corView.
Exception messages counts are limited in manner similar to the cap detector function. This feature requires RMU1
Option 5 to be purchased for operation. The peak detector is inoperable while the RMU1 programming interface is
attached. This option is not available with the RMU1-S.
‘Enable Digital Input Report’ causes an exception report to be sent to corView when the state of the isolated digital input
changes. As with other exception messages, a maximum of 6 messages can be sent in a given 12 hour window; any
additional transitions will be ignored. This feature requires airtime Option 4.
‘Invert Digital Input’ inverts the reported state of the digital input.
‘Digital Input Replaces Cap Detector’ allows the digital isolated input to replace the cap state information that is
transmitted to corView. The digital input state would then be shown in corView as the cap state.
The ‘Disable GPS’ option turns off the RMU1 automatic location determination and real-time clock synchronization.
The GPS receiver could be disabled for several reasons. The first reason is to maximize battery life. The second use
would be if the RMU1 is installed in a location that does not have sufficient GPS coverage to attain a position lock. An
example would be if the RMU1 is installed in a metal box or other challenging RF environment. This option is not
applicable to the RMU1-S.
When the ‘Disable GPS’ option is checked, the latitude and longitude co-ordinates of the RMU1 should be entered into
the appropriate boxes below the option check mark. This will allow the location of the RMU1 to still be transferred to
corView for use with mapping functions. In addition, the ‘Set RMU1 Clock’ button should be clicked after configuration
is complete to set the internal real time clock.
The ‘Instant Disc. Offset’ parameter is used to adjust the delay between the disconnect of a coupon from the structure
and when the acquisition of the instant disconnect potential is performed. Typically this value is left as low as possible
while still mitigating the effects of relay chatter that occur during the contact disconnect process.
6.3.7
Readings
The ‘Readings’ group provides for the ability to validate the configuration of RMU1. Clicking the ‘Update’ button will
request that the RMU1 perform a new conversion cycle on all of the readings slots (except depolarized coupon potential).
A reading update will typically take under 15 seconds to complete.
