Model: MC-1-M (2U)
Doc. Ref. no. : - m05/om/101
Issue no. 14
Page 27 of 103
User’s Manual
Mount the GPS antenna on an antenna mast (recommended) or on the peak of a building. The GPS
antenna kit (P/N no.: m-MK-AMC-40-1) includes special mounting brackets. For the mast, use 1-inch
(2.54-cm) diameter water pipe which is rigid enough to withstand high speed winds without flexing.
The steps needed to assemble the kit are as follows (as per given figure):
1. Clamp the GPS antenna on the mounting bracket with a retaining nut.
2. Attach the mounting bracket to the pole (P/N: m-AR-01-01) using two guillotine-style U bolts and
four hex nuts.
3. Connect the Type N male connector (antenna cable) to the antenna connector.
4. To ensure a trouble free installation the strain must be taken off the Cable by looping the cable.
•
Use GPS antenna cable supplied from factory or as per recommended in
manual. If antenna cable other than recommended is to be used, contact
Masibus Customer Service representative.
•
Do not cut the antenna cable to shorter its length. Instead, bundle the
excess cable to shorten antenna cable length.
•
The model MC-1-M requires a 5 Volt-compatible antenna. Antennas not
rated for 5 V will be damaged.
•
Use a splitter to connect a single GPS antenna to multiple GPS Master
Clock Model MC-1-M units. Avoid using BNC “T” connectors.
GPS-related Accessories
The following options/accessories can be ordered:
1. Protect against lightning and field-induced electrical surges.
2. Connect multiple GPS Master Clock Model MC-1-M receivers to a single antenna.
3. Extend the range of the GPS antenna cable.
1. Lightning Arrestor
Lightning may damage GPS system components and receiving equipment, even without a direct hit,
resulting in costly repairs and critical interruption of service. The lightning arrestor is designed to work
in conjunction with a low-resistance, low-inductance ground to protect your GPS receiver and
elements of the antenna system from lightning discharges and field-induced electrical surges. In-line
lightning arrestors are mounted between the antenna and the point where the cable enters the
building and require no additional power or wiring except the ground lead.
2. Antenna Splitter
An antenna splitter may be used to drive multiple GPS receivers using a single antenna. With built-in
amplification to overcome splitter losses, the Active Splitters may be conveniently cascaded without
adding separate amplifiers and bias-tees between splitters. Power is conveniently obtained from the
GPS receiver(s) connected to the amplifier, eliminating the need for a separate dc power supply and
wiring.
