List of All Products

Null Modem Cable
CB-NM-xx

Null Modem Cable

Null Modem serial cables allows two DTE (computer, terminal, printer, etc...) or DCE (i.e. modems ...) devices to communicate with no conflict in data transmission. The transmit and receive signals are crossed to ensure proper data transmission. Cables in male-to-female configurations are typically used as serial printer cables, while female-to-female versions are typically connecting two PC serial ports.

With a null modem connection the transmit and receive lines are crosslinked. Depending on the purpose, sometimes also one or more handshake lines are crosslinked. Several wiring layouts are in use because the null modem connection is not covered by a standard.

Options:

a. DB9 (D-Sub 9-pin) Female to DB9 (D-Sub 9-pin) to Female
      1. CB-NM-9DBF-9DBF-06 -   6-foot Null Modem Cable
      2. CB-NM-9DBF-9DBF-10 - 10-foot Null Modem Cable
      3. CB-NM-9DBF-9DBF-15 - 15-foot Null Modem Cable
      4. CB-NM-9DBF-9DBF-25 - 25-foot Null Modem Cable
b. DB9 (D-Sub 9-pin) Female to DB9 (D-Sub 9-pin) to Male
      5. CB-NM-9DBF-9DBM-06 -   6-foot Null Modem Cable
      6. CB-NM-9DBF-9DBM-10 - 10-foot Null Modem Cable
      7. CB-NM-9DBF-9DBM-15 - 15-foot Null Modem Cable
      8. CB-NM-9DBF-9DBM-25 - 25-foot Null Modem Cable
c. DB9 (D-Sub 9-pin) Female to DB25 (D-Sub 25-pin) to Female
      9. CB-NM-9DBF-25DBF-06 -   6-foot Null Modem Cable
    10. CB-NM-9DBF-25DBF-10 - 10-foot Null Modem Cable
    11. CB-NM-9DBF-25DBF-15 - 15-foot Null Modem Cable
    12. CB-NM-9DBF-25DBF-25 - 25-foot Null Modem Cable
d. DB9 (D-Sub 9-pin) Female to DB25 (D-Sub 25-pin) to Male
    13. CB-NM-9DBF-25DBM-06 -   6-foot Null Modem Cable
    14. CB-NM-9DBF-25DBM-10 - 10-foot Null Modem Cable
    15. CB-NM-9DBF-25DBM-15 - 15-foot Null Modem Cable
    16. CB-NM-9DBF-25DBM-25 - 25-foot Null Modem Cable
e. DB25 (D-Sub 25-pin) Female to DB25 (D-Sub 25-pin) to Female
    17. CB-NM-25DBF-25DBF-06 -   6-foot Null Modem Cable
    18. CB-NM-25DBF-25DBF-10 - 10-foot Null Modem Cable
    19. CB-NM-25DBF-25DBF-15 - 15-foot Null Modem Cable
    20. CB-NM-25DBF-25DBF-25 - 25-foot Null Modem Cable
f. DB25 (D-Sub 25-pin) Female to DB25 (D-Sub 25-pin) to Male
    21. CB-NM-25DBF-25DBM-06 -   6-foot Null Modem Cable
    22. CB-NM-25DBF-25DBM-10 - 10-foot Null Modem Cable
    23. CB-NM-25DBF-25DBM-15 - 15-foot Null Modem Cable
    24. CB-NM-25DBF-25DBM-25 - 25-foot Null Modem Cable
g. DB25 (D-Sub 25-pin) Male to DB25 (D-Sub 25-pin) to Male
    25. CB-NM-25DBM-25DBM-06 -   6-foot Null Modem Cable
    26. CB-NM-25DBM-25DBM-10 - 10-foot Null Modem Cable
    27. CB-NM-25DBM-25DBM-15 - 15-foot Null Modem Cable
    28. CB-NM-25DBM-25DBM-25 - 20-foot Null Modem Cable

Note: (not all items are available for purchase, subject to inventory)