User's Manual

P. G. TM0060
4-1
SECTION 4. PROGRAMMING OPTIONS
4.0 PROGRAMMING OPTIONS
The amplifier contains a number of options which are programmed before the unit is
installed, or may be adjusted during system installation or modification. They are set in a
default setting by PG before shipment. A summary diagram of these jumpers is affixed to
the inside of the removable amplifier cover for use in the field, but a larger view is shown
herein (Fig 4-1) together with the following description of these settings.
It is suggested that when jumpers are removed to break a circuit, that they be reinstalled
on one pin at the same location to keep them readily available if the option is reselected
at a later date.
4.1 DC CONTINUITY (DC)
A DC jumper is provided to permit the amplifier to isolate J1 from the DC if there is NO
need for downstream power or downstream amplifier status signals and particularly if a
DC grounded device is installed in series with the amplifier. Removing the jumper breaks
the DC connection from connector J2 to J1, and is a recommended practice. The jumper
is labelled “DCJ1 DCJ2”. The jumper provides DC continuity between J1 and J2
connectors.
NOTE: Breaking the DC connection also disconnects the low frequency Fault code
from being transmitted along the cable from a downlink amplifier or power
supply.