Quantum Data 881 - Manual (Page 387)

881/882 Video Test Generator User Guide (Rev A.22) 369
3. Enter the following command to query the log for a message with a specific opcode and
to only return specific parameter values.
CEC1:MSGX? 83 D //queries log for message with specified opcode
and request return of destination address
4. Enter the following command to query the value of a specific byte number of
parameters a message with a user specified opcode:
CEC1:MSGX? 83 P 2 //returns value of 2nd byte of the parameters of
a message with opcode 83
5. Enter the following command to query whether one message with a user specified
opcode occurs before or after another.
CEC1:MSGX? 83 O 84 //returns order of message with opcodes specified
The response will be one of:
0 - opcode 2 occurred before opcode 1
1 - opcode 1 occurred before opcode 2
2 - opcode 1 or opcode 2 not found
3 - opcode 1 and opcode 2 not found
255 - opcode 1 is the same as opcode 2
To clear the CEC message log:
1. Enter the following command to clear the messages in the log.
CEC1:MSGC //clears the message log
You can also clear the message log with the following command:
CECU
Stress testing a CEC device
The CEC ITE provides both a command driven interface and a graphical Java-based
application (CEC Controller) for stress testing CEC devices under test. The features in the
ITE command line or CEC Controller can be used to verify certain compliance related
tests under various adverse conditions such as boundry testing of timing, arbitration,
corrupt bit timing, and acknowledgement.
Setting up the CEC Controller
You access the CEC Controller through the generator’s web home page.