Dahua HCVR8204A-S3, User Manual, Page: 243 / 446

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Device supports IP channel. The network camera connection shall begin with the last
channel. Please note DVR needs to restart to activate new setup.
Note
Add IP channel function refers to the extra IP channel amount except current channel total
amount (IP). Different series products may support different extra IP channel
amount. For 16-channel series product (16 analog 48 IP channel), check the
channel 17 to channel 64, it is to change these channels to IP channels. See Figure
4-212.
4.17 System Settings
4.17.1 RS232
Step 1 From main menu->Setting->System->RS232.
Enter RS232 interface. See Figure 4-213.
Step 2 Set parameters.

Function: There are various devices for you to select. Console is for you to use the
COM or mini-end software to debug. The control keyboard is for you to control the
device via the special keyboard. Transparent COM (adapter) is to directly connect to
the PC to transfer data. Protocol COM is for card overlay function. Network keyboard
is for you to use the special keyboard to control the device. PTZ matrix is to connect
to the peripheral matrix control.

Baud rate: You can select proper baud rate.

Data bit: You can select proper data bit. The value ranges from 5 to 8.

Stop bit: There are two values: 1/2.
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Parity: There are five choices: none/odd/even/space mark.
System default setup is:
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Function: Console
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Baud rate:115200
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Data bit:8
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Stop bit:1

Parity: None
Step 3 Click Apply or Save to complete setup.