8
SHM-768K
1.4 Timing Elements
Receive Clock
—Derived from the receive signal
Transmit Clock
—Derived from 3 alternative sources: 1) Internal oscillator,
2) External from the DTE, 3) Loop clock derived from the receive signal,
looped back as a transmit clock
1.5 Indicators
Transmit Data
—TD
Receive Data
—RD
Request to Send
—RTS
Data Carrier Detect
—DCD
Test
—TEST
Power
—PWR
Bit Errors
—ERR
1.6 Physical
Size
—ME280A: 1.75"H x 9.6"W x 7.6"D (4.4 x 24.3 x 19.3 cm); ME280C:
0.9"H x 6.2"W x 9"D (2.5 x 15.7 x 23 cm); Rack: 7”H x 19"W x 8.5"D
(17.8 x 48 x 21.6 cm)
Weight
—ME280A: 3.4 lb. (1.5 kg); ME280C: 10.1 oz. (0.36 kg);
Rack: 8.8 lb. (4 kg)
1.7 Power Supply
Voltage
—115 or 230 VAC ±10%
Frequency
—47 to 63 Hz
Power
—5 watts