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 38/94
- A VDC signal from an external power sensor from 0 to 5VDC
The working mode is configurable using the WEB GUI.
Depending on the mode selected, additional parameters will be needed, such as the
coupler sample value or external sensor offset/slope factor, to ensure an accurate
measurement. Please refer to you external device user manual.
Minimum and maximum warning and alarm thresholds for both forward and reflected
power can be set via WEB GUI by the user for error management and monitoring.
2.10 Automatic Gain Control (AGC)
EXACT-V2 provides a built-in output AGC to drive power amplifier stage. The output
allows the device to maintain a very stable system output power that could otherwise
vary depending on temperature, aging, etc.
This feature uses the previously described FWP-In input. The maximum gain can be
configured (depending on the initial EXACT-V2 output power and the maximum EXACT-
V2 output power) by the user to protect the PA input stage from power peaks.
Figure 20: Built-in output AGC