Comtech EF Data CLO-10 DoubleTalk Carrier-in-Carrier Bandwidth Compression Link Optimizer
Up to 16.384 MHz of Satellite Bandwidth Compression
CLO-10 DoubleTalk Carrier-in-Carrier Bandwidth Compression Link Optimizer
Comtech EF Data CLO-10 Link Optimizer provides up to 16.384 MHz of modem agnostic bandwidth compression (or up to 18.2 MHz when using Comtech EF Data’s CDM-710G High-Speed Satellite Modem with Adaptive Equalizer) that can be used to optimize one or more two-way satellite links.
The CLO-10 is based on the DoubleTalk Carrier-in-Carrier bandwidth compression technology that allows for two-way satellite links to be transmitted concurrently in the same transponder space, thereby providing significant savings in space segment. Operating at 70/140 MHz IF, the CLO-10 can be easily deployed between the frequency up/down converters and the modem or the transceiver and the modem.
Optimization
The DoubleTalk Carrier-in-Carrier technology is not just limited to providing space segment savings. It also enables multi-dimensional link optimization, thereby allowing satellite communications users to:
- Reduce operating expenses (OPEX)
- Increase throughput without using additional transponder resources
- Increase availability (margin) without using additional transponder resources
- Reduce capital expenses (CAPEX) by allowing a smaller BUC/HPA and/or antenna
- Or, a combination to meet specific user needs
Features
DoubleTalk Carrier-in-Carrier bandwidth compression
Up to 16.384 MHz (18.2 MHz when used with the CDM-710G High-Speed Satellite Modem with Adaptive Equalizer) cancellation bandwidth
Single link or multi-link optimization
Frequency: 50 MHz – 90 MHz or 100 MHz – 180 MHz, 1 kHz steps
Simple setup
M&C: Front panel, EIA-232/485 remote port and 10/100Base-T Ethernet with Telnet
Cancellation Bandwidth Data Rates
The CLO-10 is available in five different cancellation bandwidth tiers:
1.024 MHz
2.048 MHz
4.096 MHz
8.192 MHz
16.384 MHz/18.2 MHz (with CDM-710G with Adaptive Equalizer)
To meet changing needs, the bandwidth tiers can be upgraded in the field using FAST codes purchased from Digisat.
|
Cancellation Bandwidth |
Up to 16.384 MHz / 18.2 MHz (when used with CDM-710G with Adaptive Equalizer) |
|
Signal Cancellation |
30 dB minimum with like carriers |
|
BER Degradation |
0.3 dB (typical) when used with Comtech EF Data Modems Interfering carrier(s) at or below +10 dBc Adjacent carrier(s) at or below +13 dBc |
|
Input Frequency |
50 MHz – 90 MHz or 100 MHz – 180 MHz 1 kHz steps |
|
Input Level, Uplink (From Modem) |
0 to -40 dBm reference carrier +10 dBc maximum composite |
|
Input Level, Downlink |
-105 dBm + 10 log (BW) to -70 dBm + 10 log |
|
(From Down Converter) |
(BW) BW is input signal processing bandwidth, usually set to the symbol rate of the desired signal 94 - 10 log (BW) dBc maximum composite +20 dBm absolute maximum composite |
|
Output Frequency |
50 MHz – 90 MHz or 100 MHz – 180 MHz 1 kHz steps |
|
Output Level, Uplink (To Up Converter) |
Input level (uplink) - 1 _ 0.5dB |
|
Output Level, Downlink (To Modem) |
-20 to -30 dBm for C/I of _ 10dB |
|
Uplink - Output spurs, Stability, Spectrum |
Set by the modem |
|
Frequency Reference |
Selectable |
|
Internal Reference |
10 MHz, _ 1.5 ppm stability |
|
External Ref |
None (off), 1, 2, 5, or 10 MHz, internally |
|
(BNC Female) |
phase locked. Input is 50 / 75 _ compatible with 0.5 to 4.0 V pp sine or square wave. Requires high stability source. |
|
Input/Output impedance |
75 0 |
|
Unit Fault |
Form C relay |
|
Redundancy |
1:1 and 1:N (Covered by US Patent 5,666,646 - Radio frequency (RF) converter system with distributed protection switching and method therefore) |
|
Satellite Restrictions |
Satellite in “loop-back” mode (i.e. Transmit station must be able to receive itself) “Non-processing” satellite (i.e. does not demodulate/remodulate the signal) |
Satellite Teleports, Enterprise Networks, Broadband Internet Services, DS3 Satcom Links, Multi-Link VSAT Systems, G.703 Trunking, Mobile Backhaul
