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2240 Fiber Optic Modem User Manual
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4.5.5. CH_GND Jumper ................................................................................................. 54
4.6. Multi-Channel Interfaces ................................................................................ 54
4.6.1. RS-449/RS-423 Model MC1 ................................................................................ 54
4.6.2. RS-449/422 Interface ........................................................................................... 55
4.6.3. RS_BIAS Jumper ................................................................................................. 57
4.6.4. RR Jumper ........................................................................................................... 57
4.6.5. CS_GATE Jumper ............................................................................................... 57
4.6.6. CH_GND Jumper ................................................................................................. 57
4.6.7. UNBAL_REF Jumper ........................................................................................... 57
4.6.8. RS-423/DB-25 Interface....................................................................................... 58
4.6.9. V.35/RS-423 Model MC2 ..................................................................................... 59
4.6.10. CCITT V.35/MRC 34 Interface ........................................................................... 60
4.6.11. RTS_BIAS Jumper............................................................................................. 62
4.6.12. DCD Jumper ...................................................................................................... 62
4.6.13. CTS_GATE Jumper ........................................................................................... 62
4.6.14. CH_GND Jumper ............................................................................................... 62
4.6.15. RS-423/DB-25 Interface..................................................................................... 62
4.7. T1/E1 Interfaces ............................................................................................. 63
4.7.1. Transparent Bipolar - Models 4BX ....................................................................... 63
4.8. TTL/BNC Interface Model -BN ....................................................................... 66
4.9. Programmable Buffered Interface/Model P53 ................................................ 67
4.9.1. Jumper and Switch Settings................................................................................. 71
4.9.2. Generic Interface.................................................................................................. 72
4.9.3. External Station.................................................................................................... 74
4.9.4. Internal ................................................................................................................. 75
4.9.5. External ................................................................................................................ 76
4.9.6. DTE Adapter ........................................................................................................ 77
4.9.7. Legacy Adapter .................................................................................................... 78
4.10. High-Speed RS-422/Mil-Std 188-114C Interfaces ....................................... 79
