Ring Communications CB901EX - Manual (Page 35)

April 2012 Operations Manual CB901EX
TECHNICAL SPECIFICATIONS
Power requirements: 27V DC regulated
Internal operating voltages:
CMOS integrated circuits:
+/- 5V reg.
TTL integrated circuits: +/- 5V reg.
Power consumption, Basic Cardset DP 952EX 1 amp.
Power consumption, subscriber card: 100 mA per card
Max. power consumption: approx, 50W
Cable specifications:
2 individual leads per station for
speech and signalling 2 leads for
power supply. Normal telephone
cable, twisted pairs, standard
0,5 - 0,6 mm/22 gauge
Line specifications:
Frequency range:
300-5000 Hz
Galvanic: 0 dBm (1 mW/600 ohm)
Speech level, normal: - 12 dBm
Speech level, max: + 4 dBm
Tone signalling level: - 10 dBm
Tone signalling frequencies
in accordance with CCITT norms
Switching principle: Time Division Multiplex (TDM)
with anolog transmission based on
Pulse Amplitude Modulation
(PAM)
Programme organization:
Microprocessor (MPU) 16 bit
processor MC68HC11.
Memories:
FLASH
32 kbyte
RAM 32 kbyte
Cassette dimensions (complete
with cover):
Height:
265 mm - 10.4"
Width: 483 mm - 19.0"
Depth: 262 mm - 10.3"
Page 35 of 77
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