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Appendix A. SUMMARY OF
A.1
Modulator
Note: Features not in the initial product release are identified in parentheses.
Modulation
Symbol rate range
Data rate range
Operating modes
FEC
Transmit filtering
Scrambling
Output frequency
External Reference
Harmonics
and spurious
Transmit On/Off
Ratio
Output phase noise
Output power
See Table A-5
Up to 10 Msps (lower end is modulation and FEC rate dependant). Refer to Figure A-1.
See Table A-5
Transparent, closed network, DoubleTalk™ Carrier-in-Carrier®
See Table A-5
Per INTELSAT IESS-308 (0.35) or 0.20 (for use with closer adjacent channel spacing)
V.35 or synchronous
50 to 90, 100 - 180 MHz, 100 Hz resolution (70/140 MHz IF)
950 to 1950 MHz, 100 Hz resolution (L-Band)
o
Stability ± 1 ppm, 0 to 50
Stability ± 0.06 ppm, 0 to 50
Stability ± 0.06 ppm, 0 to 50
1, 2, 5, 10, or 20 MHz @ 0 dBm to +20 dBm. Internal reference phase locks to external
reference.
Greater than -55 dBc/4 kHz (typically <-60 dBC/4kHz) – measured from 25 to 400 MHz
(70/140MHz IF)
Greater than -55 dBc/4 kHz (typically <-60 dBC/4kHz) – measured from 500 to 2500 MHz
(L-Band)
Spurious measured relative to an unmodulated (CW) carrier
55 dB minimum
0
< 0.48
rms double sided, 100 Hz to 1MHz
(minimum of 10 dB better overall than the INTELSAT IESS-308/309 requirement)
-5 to -25 dBm, 0.1 dB steps (70/140MHz IF)
-5 to -45 dBm, 0.1 dB steps (L-Band).
Refer to Automatic Uplink Power Control section.
SPECIFICATIONS
o
o
C (32
to 122
F) (standard low-stability internal reference)
o
o
o
C (32
to 122
F) (Optional high-stability internal reference)
o
o
o
C (32
to 122
F) (standard reference for L-Band)
A–1
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