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 57/94
3.5.6 Clock synchronization
Characteristics Typical Value Comment
External References
External 10 MHz Reference Input
Impedance:
50 Ohms
Level:
-15 to +15 dBm
Frequency:
10 MHz ± 0.6 ppm
External 1 PPS Reference Input
Level:
LVTTL level – 5 kohms
Min Pulse Width:
1 µs
10 MHz Reference Output: 0 dBm ± 3 dB
1 PPS Reference Output
Level:
LVTTL
Pulse Width:
≥ 100 ns
Characteristics Typical Value Comment
GPS Synchronization
System:
GPS
Frequency:
1575.42 MHz
Max Nb of Tracked Sat.:
12
Antenna System Gain:
10 dB
Sensitivity:
<-138 dBm
PPS Accuracy:
± 50 ns
Antenna Power Supply:
3.3 Volts DC
Characteristics Typical Value Comment