Quantum Data 881, User Manual

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882 Video Test Instrument User Guide (Rev A.35) 87
CEC1:CECT:ARBM 0 1 0 //forces a device’s address to 0
bus to stop sending
CEC1:CECT:ARBM 0 0 1 //forces a sending device to go low when it
should not be
To test bus arbitration conflicts through the CEC/CDC Controller:
1. Access the CEC/CDC Controller using the procedures in “ To run the CEC/CDC
Controller: ” on page 78.
2. Select the arbitration test you wish to run.
The table below describes the fields of the Test Arbitration portion of the CEC/CDC
Controller dialog box.
Refer to the screen shot below which shows enabling the Seize address bus arbitration
test:
L
3. Select the device type in the Initiator and Follower pull down select boxes.
4. Select the command that you wish to send from the Opcode pull down select box.
5. Send the command by clicking on the Send activation button.
Setting Function
Seize start bit Holds the start bit on the next incoming session
Seize address bit sets all initiator address bits to 0 on the next
incoming message
Seize data bits sets an incoming data low bit a next incoming
message