MDS 05-4670A01, Rev. E
SD Series Reference Manual (x710 Mode)
7
lines coming from each remote monitor. In this type of system, there is
a modulator/demodulator (modem) at the main computer and at each
remote site, usually built into the remote monitor itself. Since the cost of
leasing a dedicated-pair phone line is quite high, wireless technology is
often used as a cost-effective alternative.
Invisible place holder
Figure 4. Typical MAS Point-to-Multipoint Network
Point-to-Point System
Where permitted, the transceiver can also be used in a point-to-point
arrangement.
A point-to-point system consists of just two radios—one
serving as a Master and the other as a Remote (see Figure 5). It provides
a simplex or half-duplex communications link for the transfer of data
between two locations.
Invisible place holder
Figure 5. Typical Point-to-Point Link
RTU
MASTER STATION
REMOTE RADIO
REMOTE RADIO
RTU
HOST SYSTEM
OR:
SDA-Augmented
Master Station
RTU
REMOTE RADIO
RTU
REMOTE RADIO
Summary of Contents for DS-SD4-1
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