Black Box ME759C-RJ45 Manual De Usuario

The Multi-Function LD Card’s RS-232 port is always the lower port on its
interface module. On ME758C models it is a standard DB25 connector
(pinout shown in Table 4-1 below, top). On ME759C models it is a 10-pin
female RJ-style connector (compatible with regular male RJ-45 cable
connectors), pinned according to a modified version of the EIA/TIA-561
standard, as shown in Table 4-2 below (bottom).

1

N/A

Not Used

2

107

DCE Ready (DCR [DSR])

3

109

Received Line Signal Detector (RLSD [CD])

4

108/2

DTE Ready (DTR)

5

102

Signal Common (SCOM [SGND])

6

104

Receive Data (RD)

7

103

Transmitted Data (TD)

8

106

Clear to Send (CTS)

9

105 or 133

Request to Send (RTS) or Ready for Receiving (RR)

10

N/A

Not Used

Pins 3 through 9 correspond to Pins 2 through 8 of the EIA/TIA-561 non-synchronous interface standard.
Pin 2 corresponds to Pin 1 of the EIA/TIA TSB-25 preliminary interface standard.

1 Protective Ground (PGND)

From Card

Transmit Clock DCE (TCC) 15

2 Transmit Data (TD)

To Card

3 Receive Data (RD)

From Card

From Card

Receive Clock DCE (RCC) 17

4 Request to Send (RTS)

To Card

To Card

Local Loopback (LL) 18

5 Clear to Send (CTS)

From Card

6 Data Set Ready (DSR)

From Card

To Card

Data Terminal Ready (DTR) 20

7 Signal Ground (SGND)

To Card

Remote Loopback (RL) 21

To Card

Transmit Clock DTE (TCT) 24

From Card

Test Mode (TM) 25