Specifications

4.
Apply
power
to the GPS receiver
(NOT
THE PK-96 YET).
5. Be sure that
the GPS receiver is
outputting its NMEA data
before
powering
up the PK-96.
6. Power
up the PK-96 and within
four seconds,
you
should notice the PK-96 transmit LED
lighting
to transmit its location.
GPSMode'h"
Default: 0
(Disabled)
This
is a variable ranging
from 0-3 that selects
a specific mode of operation
specihc
to
GPS.
Three
CTRL-
C's returns unit to
GPSMode 0.
Mode 0
=
Normal
Packet TNC
operation.
(GPS
operation disabled.)
Mode 1
=
PK-96
connected directly
to a GPS receiver.
The PK-96 will
begin
parsing
its
programmed
NMEA
sentences under the fbllowing
conditions:
l. GLOCtx
timer expires.
2.
The PK-96 receives
an Unproto frame containing ?APRS?.
3. The
PK-96
receivcs
an Unproto fiame containing MYCALL..:?APRS?.
4. The PK-96
receives an Unproto frame
addressed to
its POLLCALL.
Upon reception
of one of these types
of
frames,
the
PK-96
will begin to
parse
its
programmed
NMEA sen-
tences. If the PK-96
successlully
parses
one
or both of its NMEA sentences, it will transmit the
inlbrma-
tion
parsed
as a
single UI frame. If there is no
data
received from
the GPS
receiver within fbur seconds, it
will reset its
GLOCtx timer and continue.
Mode 2
=
PK-96
connected directly
to an ULTIMETER II.
The PK-96 will
begin
parsing
its
programmed
NMEA sentences under the following conditions:
l.
GLOCtx timer expires.
2. The PK-96 receives
an Unproto frame
containing ?WX?.
3. The PK-96 receives
an Unproto frame containing MYCALL.:?APRS?.
4. The PK-96 receives
an Unproto frame addressed to its POLLCALL.
Upon reception of
one of these types of
frames,
the PK-96 will begin to
parse
its
programmed
NMEA sen-
tences. If
the PK-96 successfully
parses
one or
both of
its NMEA
sentences,
it
will transmit the
infbrma-
tion
parsed
as a single
UI
fiame.
If there is no data received from
the GPS
receiver within four seconds, it
will reset its
GLOCtx timer and
continue.
Variable Number
3
For
Commercial Use Only
Mode
3
=
PK-96
connected to a GPS receiver & computer terminal
(using
Timewave's Commercial GPS
adapter
cable).
When
the LOCtx timer expires or if the PK-96 receives
a UI
frame
addressed to
its
GPOLLCaII,
the PK-96
will
switch the serial
port
to receive data from the GPS receiver. After the NMEA commands are
parsed,
the FK-96 will transmit the
information
obtained as a Ui-frame and switch the
serial
port
back to the com-
puter.
If there is no data received from the GPS receiver within four seconds, the PK-96 will switch back
to
the computer and transmit nothing.