156-90000-508
G3
Installation Guide
13
4.3 Additional test details
4.3.1 GPS Test
About three minutes after ignition is turned-on,
the PWR LED on the G3
front panel should
flash in amber color at the rate of one pulse per
second. This indicates that the GPS has acquired
the sky position of a sufficient number of satel-
lites to arrive at a ground position solution.
If the GPS has a good view of the sky and still
has not generated any position solution within
three minutes (it may take up to 10 minutes or
more if the sky view is partially blocked.), the
following trouble-shooting procedures should be
undertaken to isolate the fault:
1) Disconnect the GPS antenna cable connector
from the G3 radio and check for + 5 VDC on
the center pin of the GPS antenna connector
on the radio using a Digital voltmeter
(DVM). If the voltage is present, do not re-
connect the cable and proceed to step 2.
2) With the DVM, measure resistance between
the shell and the center conductor of the GPS
cable, resistance should be between 100 and
300 Ohms, if it measures open or short circuit
the GPS antenna is either a passive antenna
which is the WRONG type, or a defective ac-
tive antenna, replace with a known good ac-
tive antenna.
3) Connect the new antenna to G3 and wait
about three minutes for the POSITION
ACQUIRED indicator to start flashing on
G3
, if not, the G3 radio or its GPS receiver
is defective
4.3.2 RF Data Link Test
A link test between a mobile and a known base
station can be done using the Dataradio test
commands "Address" and "Send" test com-
mands. The “Address” and “Device” fields, the
“Send” button and the “Chat” message screen
are used to send messages to specific mobile or
base or to carry out RF test. Start by entering the
address of the mobile (or base station) you wish
to send a test message to or test:
1-
Specify the address:
Addresses may be entered by typing directly
in the “Address” field in two ways:
-
Numerically, the valid address range is
1-126.
-
As an “Alpha-Mapped-Nibble” (AMN) ad-
dress, consisting of upper case letters in the
range A-P. The valid address range is A to
GN.
-
The base address is usually: 1.
-
The program may display one of the follow-
ing messages on the status bar:
-
For Paragon products:
“address is not in AMN or number format”
-
For mobile products:
“address is not in the range A – GN”
In either case, check that the address entered is
within the acceptable range, is of a valid format
and correctly typed.
2-
Enter the Device number for mobile (or base
station).
3-
Press the Send button.
The Chat window reports “Sent to xx mobile”
(where xx is mobile name)
.
If test is successful:
Status line reports “Delivery confirmed.
If test unsuccessful:
Chat window reports “Waiting”,
Then the Status line reports “Delivery Failed”.