HW Testsuite for image 0
VHDL image 0 covers the basic functionality required for the board. That is:
- Basic pulse repetition. The repetition characteristics are the
following:
- Input
- Pulses less than 600 ns are not repeated.
- Pulses bigger than 1.5 us are cropped to 1.5 us. If they are exceeding 3 us, the output will be a pulse of 1.5 us, then a low value for 1.5 us, another pulse of 1.5us and so on...
- Lowest level of the high value for Blocking is 1.5V.
- Lowest level of the high value for TTL is 2V.
- Output pulse
- It is 24V.
- Little dependence on temperature.
- Rise-time optimized for line attenuation (targeted to not produce frequencies that are killed after a 100 mts connexion).
- Input
Several tests are performed on the board for assuring correct functionality:
- Basic functionality.
- Input-output misconnections.
- Interoperability with different boards.
- ESD
- Long-term test.
Summary of tests
Test number | Target | Passed |
0 | Basic | YES |
1 | Basic | YES |
2 | Basic | YES |
3 | Basic | YES |
Basic functionality
Test 0
The pulse source is connected to the 'IN' LEMO connector of the front board, CONV-TTL-BLO. The parameters of the pulse are:
- 1us length
- 3.3V
It should be checked that CONV-TTL-BLO TTL output is achieved in 'OUT' LEMO connector of the same channel. A parallel termination of 50 Ohm is placed in the output.
Repeat this test for every channel.
> RESULTS
> It works on every channel.
Test 1
The pulse source is connected to the 'IN' LEMO connector of the front board, CONV-TTL-BLO. The parameters of the pulse are:
- 1us length
- 3.3V
It should be checked that CONV-TTL-RTM-BLO Blocking output is achieved in every of the three 'OUT' LEMO connector of the same channel. A parallel termination of 50 Ohm is placed in the output.
Repeat this test for every channel.
> RESULTS
> It works on every channel.
Test 2
The pulse source is connected to the 'IN' LEMO connector of the front board, CONV-TTL-BLO. The parameters of the pulse are:
- 300 ns length
- 3.3V
It should be checked that CONV-TTL-BLO TTL output is achieved in 'OUT' LEMO connector of the same channel. A parallel termination of 50 Ohm is placed in the output.
Repeat this test for every channel.
> RESULTS
> It works on every channel.
Test 3
The pulse source is connected to the 'IN' LEMO connector of the front board, CONV-TTL-BLO. The parameters of the pulse are:
- 300 ns length
- 3.3V
It should be checked that CONV-TTL-RTM-BLO Blocking output is achieved in every of the three 'OUT' LEMO connector of the same channel. A parallel termination of 50 Ohm is placed in the output.
Repeat this test for every channel.
> RESULTS
> It works on every channel.