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SYNC SHM-NPR MP
2. Description
The Sync SHM-NPR MP features surface-mount
technology and a custom VLSI chip. It supports up to
12 drops and is powered by data only. It operates at
speeds from 1.2 to 19.2 kbps. The unit has the best
speed-to-distance ratio of any available data-powered
sync SHM—11 miles (17.7 km) at low data rates and
four miles (6.4 km) at 19.2 kbps over two 22-AWG
twisted-pair wires (conservatively rated).
The SHM-NPR operates at full- or half-duplex and uses
three clocking methods: internal, external, and
received loopback. It’s also transformer-isolated for
ground-loop protection. You can select RTS/CTS delay
of 7 or 53 ms, and carrier status of constantly on or RTS-
controlled.
Ten models are available:
• Sync SHM-NPR MP (DB25) with Surge Protection
(4-Screw Terminal Block) (ME729A-MSP)
• Sync SHM-NPR MP (DB25) with Surge Protection
(4-Screw Terminal Block) (ME729A-FSP)
