UTM-00339 | Rev 19
Page 17 of 253
DetNet South Africa Copyright © 2021
The system description details a full system lay-out and also the individual component name, function and interaction
between the components. The picture below shows the system components.
This 4th generation Control Equipment (CE4) that is designed and developed by DetNet South Africa consists of two
main devices, namely the DigiShot
®
Plus 4G Commander and CE4 Tagger. The DigiShot
®
Plus 4G Commander unit
may be set-up either as a Bench Commander (for connection to detonators) or as a Base Commander that is used
to remotely communicate with a Bench Commander to initiate the blast (see illustration below). The Commander
may also be used as a RF Repeater to increase remote blasting range and maintain line of sight.
The CE4 Tagger is an inherently safe device that is used on the bench to test detonators and assign delays to them.
The CE4 Tagger has a dual role and may also be used to wirelessly connect to a DigiShot
®
Plus 4G Commander
thereby acting as an interface unit for the DigiShot
®
Plus 4G Commander.
This unique design simplifies the design of the DigiShot
®
Plus 4G Commander – which comprises of a screen and
two buttons allowing the user to control the DigiShot
®
Plus 4G Commander remotely from the comfort of a CE4
Tagger.
Peripheral devices such as a Laptop or Tablet will be COTS (Commercial Off-The-Shelf) equipment loaded with
DetNet software to interact with the system.
Figure 1 (below) depicts a scaled system as would be required to perform a 1600 detonator blast (Using 10
Commanders each connected to 1600 detonators the blast size can be increased to capacity of 16 000 detonators)
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