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Black Box Console Server user guide 136
PC serial port
PC, example connections,
with a Black Box RS232 RJ45 connector and a direct (1:1) connection to the PC
(connection not through a structured cabling system), and using hardware flow
control:
1. If your PC is fitted with a DB25 connector, use the same DB25 pinouts as for
modems, shown in Section Modems
2. We assume you are connecting your PC directly to the Black Box device (no
structured cabling system).
3. In addition to the signals shown in the examples above, you may connect
Protective Ground (P/GND) if you have shielded twisted-pair (STP) cable.
Connect P/GND at either your equipment or the Black Box device (but not both).
P/GND will reduce interference in noisy environments.
4. The application of the connection example is a PC running terminal emulation
software set to ‘hardware flow control’.
Connection from the 25-pin Admin Port to a PC
Black Box RS232 PC
RJ45 DB9
DSR 2 <———————— 4 DTR
DTR 3 ————————> 6 DSR
S/GND 4 5 S/GND
TXD 5 ————————> 2 RXD
RXD 6 <———————— 3 TXD
CTS 7 <———————— 7 RTS
RTS 8 ————————> 8 CTS
Black Box 25-pin Admin Port PC
DB25 DB9
TXD 3 ———————> 2 RXD