Filter
Top Products
54
MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.
Message ID: ZCH
Rate: variable; defaults to 1 Hz
Fields: 24
Field No. Symbol Field description Field type Example
$__ __ZCH Start of sentence and address field $PRWIZCH
1-2 SAT_PRN Channel 1 satellite PRN number (Note 1) xx 05
2 STATUS Channel 1 status indication (Note 1) hh -- F
3-4 ... Channel 2 satellite PRN number and status indication xx,hh- - ...
5-6 ... Channel 3 satellite PRN number and status indication xx,hh- - ...
7-8 ... Channel 4 satellite PRN number and status indication xx,hh- - ...
9-10 ... Channel 5 satellite PRN number and status indication xx,hh- - ...
11-12 ... Channel 6 satellite PRN number and status indication xx,hh- - ...
13-14 ... Channel 7 satellite PRN number and status indication xx,hh- - ...
15-16 ... Channel 8 satellite PRN number and status indication xx,hh- - ...
17-18 ... Channel 9 satellite PRN number and status indication xx,hh- - ...
19-20 ... Channel 10 satellite PRN number and status indication xx,hh- - ...
21-22 ... Channel 11 satellite PRN number and status indication xx,hh- - ...
23-24 ... Channel 12 satellite PRN number and status indication xx,hh- - ...
CKSUM Checksum *hh *37
<CR><LF> Sentence terminator
Note 1: Channel number (xx) is implied by position in message. Data for all 12 channels is always provided in this message. If a
channel is unused, a value of 0 will appear for both channel fields. The status indication (hh__ is a one-digit, hexadecimal value
which represents four bits as follows:
<y.O> Measurement of the satellite on this channel used in navigation solution.
<y.1> Ephemeris available for the satellite on this channel.
<y.2> Satellite on this channel is in track.
<y.3> DGPS corrections available for the satellite on this channel (Note: This bit will never be set whenever the configuration of a
particular Jupiter GPS receiver does not support DGPS).
Table 3-53 ZCH message (Navman proprietary Jupiter channel status)
3.6.1.9 Navman proprietary Jupiter channel status
(ZCH).
This message complements the GSV message by
providing satellite-to-channel mapping and a status
indication for each channel. The contents of the
‘ZCH’ message are described in Table 3-53.
Sample message:
$PRWIZCH,05,F,20,F,04,F,09,F,16,F,06,F,07,6,
00,0,24,F,00,0,00,0,00,0*37