LADD IP Holdings Pty Ltd atf BMT IP Discretionary Trust A310500V5R1 Manuel D’Utilisation

BMM

System

Manual

– BMM Activator

www.bmt.com.au

2.3

Test Button



The Test function only confirms that the BMM

is functioning by

turning it on briefly. It is not necessary to use this during normal use
and it is best to avoid using this function onsite.

If Test Mode has to be used to confirm a BMM

is functioning, position the activator as

previously described and press the grey

Test

button ❼ (the display ❹ can be any number).

The BMM

will then transmit for about five seconds and then turn off, ready to be switched

on normally.

2.4

Delayed Start-up

The BMM

transmits at constant power for about 10 – 12 hours so to accurately calculate the

depth of the BMM

s after the blast, they must be located within this period. The BMM

will

continue to transmit for about 24 hours beyond this time (total ~36 hrs) but the signal will

slowly decrease and eventually switch off. If the BMM

is located after the initial 10 hr period,

its horizontal location will be accurate but not its depth. The delayed start-up feature was
specifically designed for mines that could not access the muckpile immediately after blasting

due to light and/or safety reasons. It can also be used to install the BMM

s well before the

blast for operational reasons.

Once activated with a delayed start-up, the BMM

with transmit for approximately 15

minutes  before  switching  off  and  sleeping for  the  requested  period.  At  the  end  of  the  delay
period, it will transmit  normally until the battery goes flat  – just as it does with zero delay.
Refer  to  the  “Monitoring  Procedure  Manual”  for  more  information  about  how  the  delayed
start may be used.

Delays can be set in multiples of 4 hours, up to 36 hours. The displayed number is the

actual

delay in hour

s, which is different to the old Type 4 Activator.

WARNING

Once a BMM

is activated for delayed start-up it cannot

be changed. That is, it cannot be switched off nor be made
to switch on earlier or later.

2.5

Miscellaneous

The BMM Activator is also useful to quickly determine if a BMM

is transmitting since the red

receive LED ❺ will illuminate intermittently with sound whenever a BMM

signal is

detected.