I0 Product Identifier
I1 Display ROM Checksum
I2 ROM Checksum Test
I3 Firmware Revision
I4 Product Features
I6 Identify Signal Converter
I7 Version Number
&T0 Terminate Test In Process
&T1 Initiate Local Analog Loopback
&T3 Perform Local Digital Loopback
&T4 Enable Granting Of RDL Requests
&T5 Deny Granting Of RDL Requests
&T6 Initiate Remote Digital Loopback
&T7 Initiate RDL With Self Test
&T8 Local Loopback With Self Test
&T19Perform RTS/CTS Cable Test
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