Communication Cards
3-16 Rev 2/01
3.7.2 Dial-up Modem Card Specifications
OPERATION Mode:
Full-duplex 2-wire for dial-
up PSTN (Bell 212 compatible).
Data Rate:
1200 or 2400 baud
asynchronous (software
selectable).
Parity:
None, odd, or even
(software selectable).
Format:
8, 9, 10, or 11 bits,
including start, stop, and parity
(software selectable).
Modulation:
V.21 and 103, binary
phase-coherent FSK; V.22 and
212A, 4 point DPSK at 600 baud;
V.22bis, 16 point QAM at 600 baud.
Transmit Carrier Frequencies:
Originate, 1200 Hz ± 0.1%;
Answer, 2400 Hz ± 0.1%.
Receive Carrier Frequencies:
Originate, 2400 Hz ± 7 Hz;
Answer, 1200 Hz ± 7 Hz.
Transmit Amplitude:
-1 dB
typical.
Telephone Line Impedance:
600 ohm typical.
RTS to Transmission Delay:
Configurable in 50 millisecond
periods (software selectable).
Receiver Sensitivity:
Off to On
threshold, -45 dBm. On to Off
threshold, -48 dBm.
OPERATION
(CONTINUED)
POWER
REQUIREMENTS
ENVIRON-
MENTAL
DIMENSIONS
WEIGHT
APPROVALS
Maximum Output Level:
0
dBm nominal into 600 ohms.
LED Indicators:
TXD, RXD,
AA, and OH.
Connector:
RJ11 (6-pin).
Surge Protection:
Conforms to
FCC part 68 and DOC.
Surge Isolation:
1000 Vac and
1500 volt peak.
Certification:
FCC Part 68
approved.
4.5 to 5.5 Vdc, 0.25 W maxi-
mum, supplied by processor
board.
Operating Temperature:
-40 to
75 °C (-40 to 167 °F).
Storage Temperature:
-50 to
85 °C (-58 to 185 °F).
Operating Humidity:
To 95%
relative, non-condensing.
0.7 in. H by 2.0 in. W by
2.75 in. L (18 mm by 51 mm
by 70 mm).
1.3 oz. (36 g).
Covered by CSA approval for the
unit in which card is installed.
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