Option menus, Gps setup (7600 mhd-ref) – Grass Valley 7600REF User Manual
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7600 SD/HD/MHD-REF — Instruction Manual
Operation
Option Menus
Available options on the different model types are enabled at the factory.
An option will appear in the menu trees if it is included in the model. Refer
to
for the list of options included in each model.
GPS Setup (7600 MHD-REF)
The GPS module comes with the 7600-MHD-REF model and is installed in
Slot 1. The Global Positioning System (GPS) is currently the only fully-func-
tional Global Navigation Satellite System. More than two dozen GPS satel-
lites are in medium Earth orbit, transmitting signals allowing GPS receivers
to determine the receiver’s location, speed, and direction.
GPS also provides a precise time reference used in many applications
including synchronization of telecommunications networks.
The GPS BNCs (and the AES unbalanced outputs) active on the 7600
MHD-REF model are shown in
.
Figure 25. GPS BNCs
•
The 1PPS (1 Pulse Per Second) output is a precise TTL level pulse which
may be terminated into 75 ohm when connected into external equip-
ment.
•
The GPS antenna input should be connected to a high quality 50R GPS
antenna.
•
The AES 1 and 2 outputs provide an unbalanced duplicate of the
signals on the AES 9 pin Sub-D connector (
are not related GPS operation and are provided for convenience from
this module.
AES 1
1
AES 2
GPS
1 PPS
10/27/WC OUT
5/10 REF IN
LOOP
GENLOCK
AES 1 and 2 Unbalanced
Audio Outputs
GPS Receiver
Antenna Input
GPS Receiver
1PPS Output