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Black Box Console Server user guide 139
Connection from the 25-pin Admin Port to a Terminal
For a terminal operating at speeds faster than 9600 baud, or for a terminal which
cannot use xon/xoff flow control, the following connections are required:
Notes:
1. 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.
2. * asterisk denotes that you connect CTS to CTS only if input flow control (from
the Terminal to the Black Box device) is required.
Black Box 25-pin Admin Port Terminal
DB25 DB25
TXD 3 ———————> 3 RXD
RXD 2 <——————— 2 TXD
GND 7 ———————— 7 GND
Black Box device Terminal
RS232 RJ45 DB25
RXD 6 <———————— 2 TXD
TXD 5 —————--—> 3 RXD
RTS 8 <———————— 4 or
20
RTS or
DTR
*CTS 7 —————--—> 5 *CTS
S/GND 4 ———————- 7 S/GND