Atlona AT-UHD-CLSO-840 handleiding
Handleiding
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AT-UHD-CLSO-840
50
Advanced Operation
RS-232 Control
The AT-UHD-CLSO-840 provides RS-232 control between an automation system and an RS-232 device using a
captive screw connector block. The AT-UHD-CLSO-840 provides two modes of RS-232 control: Pass-through mode
and control mode.
RS-232 is serial data protocol that allows Data Terminal Equipment (DTE) devices, such a computer or control
system, to communicate with Data Communication Equipment (DCE) devices, such as the AT-UHD-CLSO-840,
amplier, or display. Although IP control is available, RS-232 still plays an integral part of many control systems.
Although the 25-pin D-type connector (DB-25) was dened as the RS-232 standard, it is now commonly
implemented in a nine-pin (DE-9) connector package and is numbered, as shown below.
Most DTE devices provide a male connector, while DCE devices have a female connector. However, this is not
always the case. If the port type is unknown, then a multimeter can be used to determine whether the port is DTE or
DCE:
Determining the Port Type
1 2 3 4 5
6 7 8 9
5 4 3 2 1
9 8 7 6
DE-9 (male) DE-9 (female)
1 2 3 4 5
6 7 8 9
5 4 3 2 1
9 8 7 6
DTE Pin Descriptions
DCE Pin Descriptions
Pin Signal Description
1 DCD Data Carrier Detect
2 RxD Receive Data
3 TxD Transmit Data
4 DTR Data Terminal Ready
5 GND Ground (Signal)
6 DSR Data Set Ready
7 RTS Request to Send
8 CTS Clear to Send
9 RI Ring Indicator
Pin Signal Description
1 DCD Data Carrier Detect
2 TxD Transmit Data
3 RxD Receive Data
4 DSR Data Set Ready
5 GND Ground (Signal)
6 DTR Data Terminal Ready
7 CTS Clear to Send
8 RTS Ready to Send
9 RI Ring Indicator
1. Turn on the multimeter and set it to measure DC voltage.
2. Connect the positive and negative leads to pins 3 and 5, respectively.
3. Check the voltage reading:
If the voltage is between -3 V DC and -15 V DC, then the device is DTE.
Otherwise, it is DCE.
Voltage levels between -3 V and -15 V DC represent a logic “1”.
Voltage levels between +3 V and +15 V DC represent a logic “0”.
1 2
Multimeter
3 4 5
6 7 8 9
COM
+
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Productinformatie
| Merk | Atlona |
| Model | AT-UHD-CLSO-840 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 11442 MB |
