Comtech EF Data MM200 - Manual (Page 83)

MM200 High-Speed Microwave Modem Electrical Interfaces
TM086 - Rev. 4.1 5-7
5.11 Overhead/DS0 Audio Rear Panel Interface
This rear panel interface (Figure 5-4) provides eight 64 Kbps DS0 interfaces or seven DS0 and
one Audio Channels. Refer to Tables 5-6 and 5-7 for pin assignments.
Figure 5-4. Overhead/DS0 Audio Rear Panel Interface
Table 5-6. Channel 1 (Female 15-pin HD ‘D-Sub’)
DS0 Audio
Pin Signal Direction Pin Signal
1 RX_DS0 + Out 1
2 GND 2
3 TX_DS0 + In 3 PUSH_TT
4 REF_CLK + Out 4 REF_CLK +
5 N/C 5 AUDIO_TX -
6 RX_DS0 - Out 6
7 RX_CLK + Out 7
8 TX_CLK - In 8
9 REF_CLK - Out 9 REF_CLK -
10 N/C 10 AUDIO_RX +
11 RX_CLK - Out 11
12 TX_CLK + In 12
13 TX_DS0 - In 13 PUSH_TT-GND
14 N/C 14 AUDIO_RX -
15 N/C 15 AUDIO_TX +