Installation
Table 2.11: 1PPS Input Connector
Item
Specification
Connector type:
BNC 50
Ω
socket
Connector designation:
1PPS IN
Pin-outs: Centre
Video
Signal
Shield
Ground/Chassis
2.6.9
External Reference Input Connector
One connector is provided to receive an external reference signal. For signal specification, see
Appendix A: Technical Specification.
Table 2.12: Ext Ref In Connector
Item
Specification
Connector type:
BNC 50
Ω
socket
Connector designation:
EXT_REF_IN
Pin-outs: Centre
Video
Signal
Shield
Ground/Chassis
2.6.10
70/140 MHz (IF) Output Connector
One IF output connector provides an IF output. For signal specification, see Appendix A:
Technical Specification.
Table 2.13: 70/140 MHz (IF) Output Connector
Item
Specification
Connector type:
BNC 50
Ω
socket
Connector designation:
70/140 MHz OUT
Pin-outs: Centre
Video
Signal
Shield
Ground/Chassis
2.7
Configuring the Modulator for Best Performance
2.7.1
Bringing the Modulator Online
When bringing a transmit carrier on line, the following sequence must be followed:
1.
Power on the modulator for five minutes to allow the oscillator to stabilize.
2.
Before connecting the L-band cable to the BUC, verify that:
The Symbol rate and the frequency of the modulator are correctly set
SBD75e Series Modulator Installation and Operation Manual
2-13
Summary of Contents for L-Band Satellite Modulator
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Page 45: ...Front Panel Monitoring Control SBM75e Series Modulator Installation and Operation Manual 3 15...
Page 73: ...Web GUI Monitoring Control 4 28 SBM75e Series Modulator Installation and Operation Manual...
Page 78: ...Technical Specification SBM75e Series Modulator Installation and Operation Manual A 5...
Page 90: ...Glossary B 12 SBM75e Series Modulator Installation and Operation Manual...