GPSPCI 2/72008 Rev 1.2.1
6
Masterclock, Inc.
PRE-AMPLIFIED ANTENNA
The GPSPCI requires a pre-amplified antenna. It provides 5 VDC via the center pin of the
coaxial for remote power.
Warning: Attaching a passive (non pre-amplified) antenna to the
GPSPCI could destroy the GPS receiver module. This is a major repair cost, which is not
covered by warranty.
The unit is tested and shipped with the appropriate cable for the antenna that was ordered.
Should you require a longer antenna cable we recommend that you contact Masterclock so that a
properly matched cable and antenna can be supplied.
Although changing the GPS antenna or coaxial cable is not technically difficult, these changes
are strictly the usre’s responsibility. We neither warrant nor support operation with any hardware
not installed or supplied by us.
ANTENNA COAXIAL CABLE
The coaxial cable should not be crushed, crimped or bent at a sharp angle nor should it be
strained by pulling. Any damage to the cable could result in the GPSPCI not functioning
properly. If the cable is to be coiled for storage, the coil diameter should be at least 6”.
PROBLEMS – TROUBLE SHOOTING
All GPSPCI units are checked for proper operation before shipment. Unless physical damage is
found, the unit has been proven to be functional at the factory.
Please remember for an initial startup at a new location the unit could take up to 30 minutes.
After the unit has acquired satellites at the new location, the startup time is greatly reduced to
anywhere from a few seconds to several minutes.
If the antenna (and coaxial cable) has not been damaged and has an unobstructed view of the
sky, the power connector is properly installed and the front panel LED follows the startup
sequence described earlier (on, off & then on), the unit is working.
If you continue to have problems even after the above precautions have been noted please
contact the factory.
