User`s manual

100-M0145X2 21 of 36
www.cobham.com/gms
6. Initial Check Out
Prior to installing a MVRD unit into the desired target environment, an initial checkout should be
performed to ensure proper operation of the unit. The initial checkout consists of configuring a basic
MDL (Messenger Digital LINK) wireless link.
6.1 Deploying and Operating the MVRD
The MVRD is a tactical digital video receiver-decoder and the following guidelines should be employed
when using the equipment.
 Depending on the RF environment (line of sight or non line of sight) and the power of the
transmitter (100mW or 1W), the MVRD will operate at a range typically 300m to 1km from the
target transmitter in an urban environment.
 If the MVRD is being operated inside a building or vehicle, better results may be achieved by
using the external antenna function and deploying the antennas to the outside of the building
or vehicle.
 To prevent damage to the MVRD, it should not be operated too close to the transmitter (within
5m typically, further if the transmitter is greater than 1W in power).
Figure 6 shows a basic MDL configuration wireless link. The steps necessary to setup the configuration
shown are stated below:
Figure 6 – Basic MDL Setup