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Comtech EF Data OM20 User Manual

Page 192

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OM20 Universal Outdoor Modem

Appendix E

MN-OM20– Revision 5

E–10


Under Interface:

Under TX Setup:

Set Tx Clock = SCTE

Under Tx D&I:

Set Drop Mode = T1-D4

Use SATCh TS edit capability to define desired mapping of

Satellite Channels to drop Terrestrial Slots

Use Map Copy to copy Tx Edit to Tx Active


Under Modulator:

Under Mod IF:

Set Frequency to desired value

Turn IF Output Power On


Under Demodulator:

Under Demod Data:

Set Data Rate = 512000

Set Conv Enc = 3/4 Rate VIT


Under Demodulator:

Set Network Spec. = Drop & Insert


Under Interface:

Under RX Setup:

Set Buff Size to desired depth

Under Rx D&I:

Set Insert Mode = T1-D4

Set T1 E1 Frm Src = External

Use SATCh TS edit capability to define proper mapping of


Satellite Channels to insert Terrestrial Slots

Use Map Copy to copy Rx Edit to Rx Active

Under Demodulator:

Under Demod IF:

Set Frequency to desired value


Example 2:

Multidestinational Remote Site Programming

Drop 512 Kbps from a T1 trunk, 3/4 Rate Viterbi.

Extract 512 Kbps from a 1536 Kbps carrier and insert into a

T1 trunk, 3/4 Rate Viterbi.

Drop 512 Kbps from a T1 trunk, 3/4 Rate Viterbi

Configuration setup is exactly as previously shown in Example 1.

Extract 512 Kbps from a 1536 Kbps carrier and insert into a T1 trunk, 3/4 Rate Viterbi


Under Interface:

Under RX Setup:

Set Rx Type according to your hardware configuration