System installation 9
System installation
Warning! Connect the VC-Grid™ only to the devices specified in this manual and only using the
Martin™ cables specified in this manual.
Warning! Do not exceed the maximum numbers of devices that can be connected and maximum
cable lengths specified in this manual and the manuals of the devices in the system.
Warning! Do not interconnect more than a total of twelve VC-Grid 8x8 25s in one linked chain or
interconnect VC-Grids in one linked chain that will exceed the maximum power rating of the PSU,
whichever limit is reached first. Do not connect more than one linked chain of VC-Grids to one
output from a Martin P3 PowerPort 1500™.
The VC-Grid is designed to display either Martin P3™ video or DMX-controlled lighting effects. It
automatically recognizes and responds to either a Martin P3™ or a DMX data signal. The next sections
explain how to create a VC-Grid installation to display P3 video data or DMX-controlled lighting effects.
Installing a P3 system
The P3 link requires Ethernet Cat 5e or better network cable. The cable run between any two devices on the
link can be up to 100 m (328 ft.) in length. If necessary, a cable run can be extended beyond 100 m by
inserting an unmanaged Ethernet switch or using a fiber-optic system (see the P3™ system controller user
manual for details).
To install a system that displays Martin P3™ video on VC-Grids, see the overview in Figure 4 and follow
these directions:
1. Make sure that no devices in the installation can be connected to AC mains power until all installation
work is complete.
2. Read “Safety Information” on page 4 and ”Electrostatic discharge precautions” on page 6.
3. Create a P3 video data link from a Martin P3™ system controller such as the P3-100™, P3-200™ or P3
PC™ to a Martin P3 PowerPort 1500™.
4. If required, continue the P3 video data link in a daisy-chain by connecting the P3 data throughput of one
P3 PowerPort 1500™ to the P3 data input of the next, as described in the P3 PowerPort 1500™ user
manual. You can connect up to fifty P3 PowerPort 1500s in a P3 data daisy-chain like this. If you need to
connect more than fifty, use an unmanaged Ethernet switch to split the P3 data link into branches, each
containing less than fifty P3 PowerPort 1500s.
5. Connect VC-Grids together in daisy-chained hybrid links using Martin™ hybrid PCB-to-PCB cables (see
”Power + data VC-Grid to VC-Grid link cables” on page 21). Connect each cable from the THRU
connector on one VC-Grid to the IN connector on the next VC-Grid (VC-Grid connectors are shown in
”VC-Grid overview” on page 7).
Warning! Each hybrid link may contain up to a maximum of twelve VC-Grid 8x8 25s.
6. Connect each hybrid link of VC-Grids to one of the four 4-pin female XLR hybrid (48 VDC power + P3
data) outputs on a P3 PowerPort 1500™ using a Martin™ hybrid 4-pin male XLR to PCB adapter cable,
P/N 11840158 (see Figure 3).
If this adapter cable is not long enough, extend it by inserting a Martin™ 4-pin XLR hybrid extension
cable between the adapter cable and the P3 PowerPort 1500™ hybrid output. This extension cable is
available in various lengths (see ”Power + data extension cables” on page 21).
Figure 3: Hybrid-to-PCB adapter cable, P/N 11840158
From 48 VDC +
P3 data source
Power + data
to VC-Grid
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