Radyne DMD20 Installation And Operation Manual page 8

Table of Contents DMD20 Universal Satellite Modem
3.1.6.1 Terminal _______________________________________________________ 3-6
3.1.6.2 Remote Port____________________________________________________ 3-7
3.1.6.3 Async Port _____________________________________________________ 3-7
3.1.6.4 Ethernet Port ___________________________________________________ 3-7
3.1.6.5 Clock _________________________________________________________ 3-7
3.2 Earth Station to Earth Station Communications Port _______________________ 3-7
3.3 Terrestrial Loopback ________________________________________________ 3-7
3.4 Modem Status _____________________________________________________ 3-7
3.5 Baseband Processor Card ___________________________________________ 3-8
3.5.1 Baseband Processing______________________________________________ 3-8
3.6 DMD20 Clocking Options ___________________________________________ 3-11
3.6.1 SCTE: Serial Clock Transmit External ________________________________ 3-11
3.6.2 SCT: Serial Clock Transmit ________________________________________ 3-11
3.6.4 EXT CLK: External Clock __________________________________________ 3-11
3.6.5 BNC EXC: BNC External Clock _____________________________________ 3-11
3.6.6 IDI: Insert Data In ________________________________________________ 3-11
3.6.7 SCR: Serial Clock Receive_________________________________________ 3-11
3.6.8 EXT IF REF: External IF Reference__________________________________ 3-12
3.7 Transmit Timing ___________________________________________________ 3-12
3.7.1 EXT CLK as TX Clock Source (RS-422 or V.35 Interface) ________________ 3-12
3.7.2 SCT or SCTE ___________________________________________________ 3-12
3.7.3 G.703 Interface __________________________________________________ 3-12
3.8 Receive Timing ___________________________________________________ 3-12
3.9 Loop Timing ______________________________________________________ 3-12
3.9.1 Transmit (RS-422 or V.35 Interface) _________________________________ 3-13
3.9.2 G.703 Interface or Asymmetrical Data Rates __________________________ 3-13
3.9.3 Receive ________________________________________________________ 3-13
3.10 Drop and Insert (D&I) ______________________________________________ 3-13
3.10.1 Drop Only _____________________________________________________ 3-15
3.10.2 Insert Only_____________________________________________________ 3-15
3.11 Mode Selection __________________________________________________ 3-16
3.11.1 PCM-30 _______________________________________________________ 3-16
3.11.2 PCM-30C _____________________________________________________ 3-16
3.11.3 PCM-31 _______________________________________________________ 3-17
3.11.4 PCM-31C _____________________________________________________ 3-17
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