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Also available in the tethered mode is synchronization. MicroWave 330 incorporates synchronization circuitry
that provides time division multiplexing so multiple links and Model 380 or Model 385 microwave transceivers
can be used in close proximity without mutual interference. Two (2) MicroWave 330 links and seven (7)
transceivers can be connected on the sync line.
A typical Tethered configuration using a CM II as the controller and a ROM II is show in Figure 21.
Note:
power wiring has been left off this example for clarity
.
RECEIVER
TRANSMITTER
RECEIVER
TRANSMITTER
TRANSMITTER
RECEIVER
CM II
ROM II
RS422
To Alarm Panel
Tether
Figure 21 – Tethered Configuration
6.0 Wiring
6.1 Power Supply
MicroWave 330 operates from 10.5 to 60 VDC @ 2.5W. The operational current rating with standard power
supplies are: 12 VDC @ 125mA Tx / 208mA Rx, 24 VDC @ 63mA Tx / 104mA Rx and 48 VDC @s 32mA
Tx / 52mA Rx. Figure 22 shows the typical voltage drop for a 500 foot (152.4m) length of cable using various
wire gauges.
Figure 22 – Voltage Drop
Содержание MicroWave 330
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