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C hapter 1 ‑ G eneral D escription O perating M odes
Operating Modes
GPS ‑ ASCII
Messaging
Refer to Figure 1
on page 4
GPS ‑ SNTP Time
Server
Refer to Figure 2
on page 4
Ethernet &
Antenna
Usage
Ethernet ‑ no
Antenna ‑ yes
Ethernet ‑ yes
Antenna ‑ yes
Description
GPS time/date signal is acquired and used to
create appropriate time/date command mes‑
sages which are sent to each Target Device
via RS‑232 Device Ports.
GPS time/date signal is acquired and used to
create appropriate time/date command mes‑
sages which are sent to each Target Device
via RS‑232 Device Ports.
Concurrent with above, GCS will respond to
Unicast requests and broadcast Multicast mes‑
sages. Applies to SNTP Time Clients on the LAN
SNTP Time Client
Ethernet ‑ yes
Refer to Figure 3
on page 5
Antenna ‑ no
Device Port
Access
Ethernet required User can dialog with any Target Device con‑
for remote access nected to an RS‑232 Device Port. Access
is data transparent. While in access mode,
Antenna ‑ per
time/date sync is not possible on the selected
above
Device Port.
Refer to Figure 4
on page 5
GCS receives Multicast messages and/or
transmits Unicast messages and receives
Unicast responses from an available LANbased Time Server. Valid SNTP messages
are used to create appropriate time/date
command messages which are sent to each
Target Device via RS‑232 Device Ports.
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Table 1: GCS Operating Modes
The operating modes described above are depicted in the next four illustrations. Figure 5
on page 6 and Figure 6 on page 7 provide detailed illustrations of the GCS‑2 and
GCS‑6, respectively.
M icro ‑A ide
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