RJ45 net kabel (8P8C)

Normalt, er det 2 type af montering begge er rigtige

Pin No.

Name

Notes/Description
1 DSR/RI Data set Ready/ring indicator
2 DCD Data Carrier Detect
3 DTR Data Terminal Ready
4 SGND Signal Ground
5 RD Receive Data
6 TD Transmit Data
7 CTS Clear to Send
8 RTS Request to Send

 

  

Dette er normalrækkefølgen i et straight netkabel at montere de enkelte ledninger i, set fra samme side som stikket ovenover.

    

Skal du lave et cross-over kabel, skal ledningerne i den ene ende af kablet monteres i denne rækkefølge.

  Sådan er krydsningsplanen i et cross-over netværkskabel.

   8 pin RJ45 (8P8C) male connector layout

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RS232 DB9 NULL Modem Pinout

DB9 Signal DB9 Signal
2 RD 3 TD
3 TD 2 RD
4 DTR 6,1 DSR, DCD
6,1 DSR, DCD 4 DTR
7 RTS 8 CTS
8 CTS 7 RTS
5 SGND 5 SGND
9 RI 9 RI

db9

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RS232 DB9 to DB25 Pinout

DB9 Signal DB25
1 DCD 8
2 RD 3
3 TD 2
4 DTR 20
5 SGND 7
6 DSR 6
7 RTS 4
8 CTS 5
9 RI 22

db9

View - looking into male connector

db25

Pin No. Name Bal/Ubal Notes/Description
1 Shield   Cable Shield, connected at DTE only.
2 BA   Transmit Data (A+) (a.k.a TxD)
3 BB   Received Data (A+) (a.k.a. RxD)
4 CA/CJ   RTS (A+) Request To Send
5 CB   CTS (A+) Clear To Send
6 CC U Data Communications Equipment Ready (modem/CSU) (a.k.a DSR)
7 AB   Signal Ground
8 CF   Data Carrier Detect (A+) (a.k.a DCD, CD or RLSD)
9 DD   Receiver Signal Element Timing (B-) RX Clock
10 CF - Data Carrier Detect (B-) (a.k.a DCD, CD or RLSD)
11 DA - Ext. Transmit Clock (B-)
12 DB   Tramsmit Signal Element Timing (B-) TX CLOCK
13 CB   CTS (B-) Clear to Send
14 BA   Transmit Data (TD) (B-) (a.k.a TxD)
15 DB   Transmit Signal element Timing (A+) TX CLOCK
16 BB   Received Data (B-) (a.k.a RxD)
17 DD   Receiver Signal Element Timing (A+) RX CLOCK
18 LL U Local Loopback
19 CA/CJ   RTS (B-) Request to Send
20 CD U DTE Ready (a.k.a DTR)
21 RL U Remote Loopback
22     RI Ring Indicator
23 AC   Signal Ground
24 DA   Ext TX Clock (A+)
25 TM U Test Mode