User's Manual
Table Of Contents
- 1 System Overview
- 2 Features Summary
- 3 EXACT-V2 Rack
- 3.1 EXACT-V2 mechanics
- 3.2 Interface characteristics
- 3.3 Front Panel signalization (LEDs description)
- 3.4 Power requirements
- 3.5 Performances and technical characteristics
- 3.5.1 General characteristics
- 3.5.2 Control and data Ethernet interfaces
- 3.5.3 Serial control interfaces
- 3.5.4 ASI inputs / output and MPEG-TS processing
- 3.5.5 Digital modulation
- 3.5.6 Clock synchronization
- 3.5.7 RF and monitoring outputs
- 3.5.8 Digital precorrection
- 3.5.9 Power level measurement inputs and AGC
- 3.5.10 Dry contacts
- 3.6 Conformity with EC Directive
- 4 EXACT-V2 Installation
- 5 Operation
- 6 Maintenance & Troubleshooting
- Appendix A GPS Installation Recommendations
- Appendix B Example of GPS Antenna
USER
MANUAL
MPD-1611291-A
EXACT-V2 High End Rack Modulator / Exciter
3/10/2017
MPD-1611291-A
Page 30/94
2.7.2.3 Protection Clipping Parameter
Since adaptive precorrection can produce power peaks at the modulator output, a
“protection clipping” has been added at the output of the modulator. It will allow the
user to protect the amplifier input by clipping the signal out from the modulator.
2.7.3 DAP Operation
DAP
stands for “Digital Adaptive Precorrection”, it is an option allowing the user to run
the EXACT-V2 in a very high-end mode in order to reach unequalled RF signal
performance and to allow a significant gain in transmitter Power Efficiency.
License activation
First, the use of the DAP mode requires the user to unlock the “DAP” license key. This
can be done in the Settings Tab under Management > Options
Note: Protection Clipping = 20 means OFF
Recommended value to start = 15dB (default value)