Operational Influences-Hoptime & Saf; Mirrored Bits™ Protocol Support; Seamless Mode Emulation; Full-Duplex Emulation - GE TransNET 900 Reference Manual

Operational Influences—Hoptime & SAF
The synchronization period is influenced by two parameters'
values— HOPTIME
configurations and the associated synchronization period value.
Table 26. Synchronization Period versus
Sync Period
9.9 MIRRORED BITS™ Protocol Support
TransNET radios are compatible with Schweitzer's Mirrored Bits MB8
protocol, provided complementary firmware (06-4045A01) is installed in all
network radios. A detailed application guide (AG2003-07) is available from
Schweitzer Engineering Labs Web site, www.SELinc.com/aglist.htm, or
from Microwave Data Systems' Web site at www.microwavedata.com.

9.10 Seamless Mode Emulation

The command assumes the payload message will be ready for transmis-
RXD
sion after the delay period has expired. If there is a chance the payload data
may be delayed, it is recommended to use the
sure the entire message is received before delivery is started. The
command provides a highly-reliable seamless operating mode, but can be
very slow to start, especially if it waits for the reception of long messages
before passing on the message.

9.11 Full-Duplex Emulation

If your system design needs to support PTP or Point-to-Multipoint applica-
tions and your communications must appear to be full-duplex to the
connected devices, set the Master to
Network Address (
duplex mode (TDD). The radio system will appear to be full-duplex to the
connected devices, but actually operates half-duplex over the radio link. Data
is buffered by the transmitting side until it is its turn to transmit. Throughput
will be approximately 1/2 of the

9.12 Co-Located and Close-Proximity Masters

If your requirements call for multiple TransNET networks at the same loca-
tion, you need to ensure that interference between the systems in minimized
to prevent overload that will diminish the performance of the radios. Tradi-
tionally, vertical separation of the antennas of co-located radios was required
MDS 05-2708A01, Rev. F
and SAF (Store-and-Forward).
Hoptime and SAF Settings
Hoptime Value
441 ms
1.8 sec
3.5 sec
ADDR ). This will place the system in a time-division
DATA
MDS TransNET Ref. Manual
Table 26
7
28
28
(er) command to make
BUFF
(where
CSADDR xxxxx
interface rate.
shows several
SAF
OFF
OFF
ON
BUFF
is the
xxxxx
63