CMX269AE2 MX-COM, Inc., CMX269AE2 Datasheet - Page 13

• Manufacturer Part Number: CMX269AE2
• Description: 1200/2400/4800bps MSK modem
• Manufacturer: MX-COM, Inc.

1200/2400/4800bps MSK Modem
Operating Characteristics Notes:
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
1999 MX-COM, Inc.
1. Measured at V
2. Excludes any current drawn by external components, but includes current drawn by the crystal
3. See Figure 6: Typical Variation of Bit Error Rate with Input Level
4. SNR = Signal-to-Noise Ratio in the Bit-Rate-Bandwidth.
5. See Figure 7: RX Bit-Error-Rate vs. Signal-to-Noise Ratio
6. Dependent upon Xtal tolerance
7. With an alternating (1010…) pattern.
8. Measured with a 150mV
9. A signal level of 230mV
10. For an unmodulated carrier
components.
(1200/2400 baud operation) or 8kHz (4800 baud operation). See Section 3, Note 2 for details on
optimizing noise immunity.
Transmitter Output
TX Output Level
Output Level Variation
Output Distortion
3rd Harmonic Distortion
Isochronous Distortion
Logic ‘1’ Carrier Frequency
Logic ‘0’ Carrier Frequency
1200/1800Hz
1200/2400Hz
2400/4800Hz
1200Hz - 1800Hz/1800Hz - 1200Hz
1200Hz - 2400Hz/2400Hz - 1200Hz
2400Hz - 4800Hz/4800Hz - 2400Hz
1200bps
2400bps
4800bps
1200bps
2400bps
4800bps
DD
www.mxcom.com tel: [phone] 744 5050 fax: [phone]
= 5.0 volts. Signal levels and thresholds are proportional to V
RMS
RMS
is used in C.D. probability measurements. Noise bandwidth is 5kHz
input signal (no noise).
13
All trademarks and service marks are held by their respective companies.
Notes
10
10
1
6
6
6
6
6
6
Min.
0
0
0
CMX469A PRELIMINARY INFORMATION
1200
1200
2400
1800
2400
4800
Typ.
25.0
20.0
10.0
775
3.0
2.0
Max.
DD
±1.0
±1.0
±1.0
40.0
30.0
20.0
5.0
3.0
.
Doc. # 20480191.002
mV
Units
dB
dB
dB
Hz
Hz
Hz
Hz
Hz
Hz
%
%
RMS
s
s
s