User guide

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Switch settings - AV204T/AV208T only
The AdderLink AV204T and AV208T transmitter modules are both equipped
with 10-way mini switches to allow quick configuration of various items. For
normal operation in the majority of cases, all switches should be OFF.
Switch 1 is used when upgrading the internal firmware and switches 2 to 10 are
all related to various aspects of serial communications.
Note: All switch settings must be selected before power is applied.
ADDE
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TRANSMITTER
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7 L
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K 8
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DERLINK
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208
1
2
3
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4
5
6
7
8
9
10
Operation mode (SW1 - select before powering on)
SW1 OFF
Normal operation
SW1 ON
Upgrade mode
Serial communications data byte length (SW2)
SW2 OFF
8-bits per character
SW2 ON
7-bits per character
Serial communications stop bits (SW3)
SW3 OFF
1 stop bit
SW3 ON
2 stop bits
Serial communications parity checking (SW4 & SW5)
None Odd Even
SW4 OFF ON ON
SW5 OFF OFF ON
Serial communications baud rate (SW6, SW7 & SW8)
19200 9600 2400 1200
SW6 OFF ON OFF ON
SW7 OFF OFF ON ON
SW8 OFF OFF OFF OFF
Serial communications hardware handshaking (SW9)
SW9 OFF
Software handshaking only
SW9 ON
Hardware handshaking enabled (RTS/CTS)
Compatibility mode (SW10 - select before powering on)
SW10 OFF
AV200 mode (RS232 enabled)
SW10 ON
AV100 mode (RS232 disabled)
Important
• It is essential that the source PC, all AV204T/AV208T modules and all
connected displays are configured to use the same serial communication
settings. The AV200T, AV200R and AV201R modules all auto-sense the serial
configuration and do not need to be set.
• When switches SW2 to SW10 are all OFF, the AV module is set to expect the
following serial port configuration: 19200 baud, 8-bit data byte, 1 stop bit,
no parity checking, software handshake.