Master/Slave X.21; Modem Settings (Master); Modem Settings (Slave); Figure 3-18. X.21 Master/Slave Configuration - Comtech EF Data SDM-650B Installation And Operation Manual

Configuration

3.6.1.3 Master/Slave X.21

Refer to Figure 3-18 for the X.21 master/slave configuration.
Note: On Rev. E boards, there are on-board jumpers to loop back the clock. Refer to
Table 3-1 (see the note in the previous example).

3.6.1.3.1 Modem Settings (Master)

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3.6.1.3.2 Modem Settings (Slave)

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3–54

Figure 3-18. X.21 Master/Slave Configuration

TX-CLOCK: INT.
Install JP10 and JP11 on buffer card (AS/3812).
Set S3 as required. Refer to Table 3-9.
TX-CLOCK: EXT.
Install JP11 on buffer card (AS/3812).
Set S3 as required. Refer to Table 3-9.
SDM-650B Satellite Modem
Rev. 5