Black Box LR5100A-T Manuale Utente Pagina 93

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Interface Pinouts
85
V.35 Link Pinouts
The connector pinouts described here correspond to the connector labeled “V.35” on
the back of the unit.
13
1
25
14
DB25
Contact
Number
M.34
Contact
Number
Circuit
Name
Direction
To From
DCE DCE
1 A Protective Ground NA
2 ----------
3 ----------
4 C Request to Send X
5 ----------
6 E Data Set Ready X
7 B Signal Ground NA
8 F Data Channel Received Line Signal Detector X
9 P Transmitted Data (A) X
10 S Transmitted Data (B) X
11 R Received Data (A) X
12 T Received Data (B) X
13 ----------
14 V Receiver Signal Element Timing (A) X
15 ----------
16 X Receiver Signal Element Timing (B) X
17 ----------
18 U Transmitter Signal Element Timing (A) DTE X
19 W Transmitter Signal Element Timing (B) DTE X
20 H Data Terminal Ready X
21 Local Loopback X
22 J Calling Indicator X
23 Y Transmitter Signal Element Timing (A) X
24 ----------
25 a Transmitter Signal Element Timing (B) X
Figure D - 8 V.35 Link Pin Outs
The connecting cable must be a shielded cable.
Circuits which are paired (contain an (A) and (B) reference) should be connected to twisted pairs
within the connecting cable.
NOTE For U.K. Approval:
The connecting cable may be any length between 0 and 5M. One end must be terminated in a male 34 pin
X.21 bis connector as defined in ISO-2593 1984. The other end must be terminated in a male 25 pin X.21 bis
connector as defined in ISO-2110 1989
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