Quantum Data 881 - Manual (Page 390)

372 Chapter 11 CEC Interactive Troubleshooting Environment (ITE)
2. Select the port and device on the 882CA that you wish to use for testing. This is the
port of a device that you are emulating. Refer to the screen shot below which shows
selection of HDMI In 1&2 ports as a TV:
L
Bit timing tests
You can set the timing of the logical 1 or logical 0 data bit as well as the start bit in such a
way to test the ability of the device under test to handle bit timings that are at the edge of
what is allowable. For example, a 1 bit’s low period can be within the range from 0.4 to 0.8
milliseconds. You can set the time for the low period and entire period. When you set this
timing using the commands described, it affects all 1 or 0 bits in all subsequent messages
sent out by the emulated device.
To test the bit timing through the command line:
1. Enter the following command to modify the timing of the 1 bits in a message.
CEC1:CECT:1BIT 0.4 2.1 //sets the low period of a one bit to 0.4
milliseconds and the total bit time to
2.1 milliseconds
2. Enter the following command to modify the timing of the 0 bits in a message.