Humminbird 955C manual GPS Receiver Installation, Stem Mounting with an Existing 1 14 Thread Stem

531569-1_B - 955c ManE.qxp 3/4/2007 5:03 PM Page 10

GPS Receiver Installation

To optimize performance of the GPS receiver, mount it in an area that has full exposure to the sky. The effective area of reception is 10° above the horizon. Different circumstances determine the mounting method appropriate for your GPS receiver.

If you have…	Then use:
An existing antenna stem with	Stem Mount with Existing
standard 1" – 14 thread stem	1” - 14 Thread Stem
Access for cable routing under	Access Under
the mounting location	Mounting Location
No access under the mounting	No Access Under
location	Mounting Location

Stem Mounting with an Existing 1" - 14 Thread Stem

Follow these steps to stem mount the GPS receiver:

NOTE: If you have an existing stem for mounting the GPS receiver, proceed directly to step 2 of the following procedure.

1.Determine the best location to mount your GPS receiver. Preplan and test the cable routing to your control head before any drilling or cutting of your boat surfaces. If you have purchased hardware to stem mount your GPS receiver, follow the instructions included with that hardware to mount the stem (antenna pole).

NOTE: AS-EC10 10' extension cables are available from Humminbird® if your planned routing exceeds 20', (6 m). Maximum cable length, including extensions, should not exceed 50' (16 m).

NOTE: Remember to caulk or seal screw holes and drilled holes as needed to protect your boat from water damage.

The pinouts of the pigtail cable are as follows:

•Red Wire, +12V (output voltage only)

•Black Wire, Ground

•White Wire, NMEA Out.

CAUTION! Please use caution before connecting the red +12V wire to any other NMEA device. This is an output voltage provided by the control head and GPS receiver and should only be connected to those NMEA devices that need a 12 volt input.

1

2

1 Receiver 3

2Receiver Base

3Stem Pipe

2.Screw on the receiver base to the stem first, making sure that the stem pipe does not protrude from the receiver base. This adds protection to the cable when pulling it through the pipe stem. In addition to this, de-burr the pipe edges to reduce cable abrasion.

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