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Chapter 1: General Information
Unity 550
The Unity 550 utilizes and supports the following standards:
Features and
Options
The Unity 550 has integral support for the following COMPEL ™ features:
COMPEL™
COMPEL
Network
unparalleled functionality. With its unique network management features, such as grouping,
receiver control and scheduling, the operator can command individual groups of receivers to
Control
switch, tune, or "output" video or data targeted specifically for that one receiver or group of
receivers. In addition, COMPEL is able to switch the Unity 550 between satellite
transponders - even to a different satellite - for unequalled disaster recovery.
1.3 Unity 550 Product Specifications
RF Input
Input Frequency Range
Input Level Range
Maximum Aggregate Input Power
Input Impedance
Input VSWR
L.O. Leakage at Input
Demodulator/FEC
Symbol-rate Range
Max Eb/No @ Video Threshold
Compression System
4
MPEG-2/DVB Compliant
2.5 - 30 Msps Symbol Rate
SCPC and MCPC
RS-232 Asynch Data up to 384 Kbps
Line 21 Closed Captioning and Extended Data
World Standard Teletext
On-Screen Control
COMPEL
™ Network Control
COMPEL
™ CA and
Wegener
COMPEL
™ On-Screen E-Mail
gives you the power to manage a network of Unity 550 s and other Unity IRDs with
Table 1.1: Unity 550 Technical Specifications
Characteristic
800072-01 Rev. A
PIN Scrambling
Specification
950.00 - 2150.00 MHz
-25 dBm total signal power down to -135 dBm/Hz signal
power spectral density (-25 to -65dBm)
-5 dBm at max input signal
75 ohms, unbalanced
<2.5:1
- 55 dBm
Convert Symbol rate Fs to Transport Rate Ft by:
(2R*Fs)*(188/204)=Ft, where 'R' is the inner FEC code
ratio, either R = 1/2, 2/3, 3/4, 5/6, or 7/8.
2.5 - 30 Msps
The lower symbol rates will require a
Note:
higher frequency stability on the LNB.
Depends on inner FEC:
1/2: 4.5 dB
2/3: 5.0 dB
5/6: 6.0 dB
7/8: 6.4 dB
MPEG-2
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