HHT3 Operators Manual
Preparing for Operation
Issue :No. 7b
Page : 25
Ref: HHT3-ASUM-7000
Copyright © 2018 IMT Ltd, trading as Vislink
Before leaving the equipment base to undertake an operation we recommend that the
following equipment checks are made.
The following list is an advised basic set of checks to perform before you plan using the
HHT3 unit:
The receiver may be powered from an external DC PSU or batteries. Check that the
batteries are fully charged and that an emergency spare battery set is available and
fully charged.
Confirm the correct frequency is selected. See Section 5.5.1
Confirm that the correct digital outputs are selected, SDI or ASI.
Confirm the correct Video format is selected for Genlock.
Confirm the correct Analogue Audio level is selected. See Section 5.5.2.1.2.
Confirm that the correct MPEG decoder setting is selected for video Services. See
Section 5.5.4.
Check that the Video, Audio, DC and RF cables are in good condition.
Whenever practical, set the system up and trial it before leaving for site to ensure that all
system components are working. We advise completing basic checks at base, so you can
make any required adjustments and corrective actions before you leave for operation.
The Handheld receiver can be used with a variety of Vislink (Gigawave) antennas:
The unit is normally supplied with two “stub” Omni antennas for ground based or
helicopter to ground reception.
CO series Co-linear Omni antennas are typically used for ground based mobile
operations.
PA series low-profile antennas are used for up-linking ground-to-air, or on-board
linking.
HX-series antennas offer increased gain and direction capabilities.
FBA fan-beam antennas offer increased gain and 90-degree sector coverage.
Parabolic antennas offer the highest gain, and longest operation range
Full details are given in the Vislink (Gigawave) Antennas datasheet.
