GT5950 is a plug-in module for the GT5150 and GT5900. The GT5950 compares vectors in real time between two units, or between a UUT and the DIO memory. The vector width can be programmed for 8, 16 or 32 bit. A maximum of 256 failures (step and data) can be stored. There is a learn mode that can be used to learn vectors from a Known Good Board (KGB) to DIO memory. A fail output is available to pause the DIO on comparison fail. There are also several Ignore modes to mask out pre-determined comparison patterns. The GT5950 operates as an input device only.
The GT5950 consists of a Field Programmable Gate Array (FPGA) and buffers. The FPGA logic consists of : a Compare Engine, that compares the two selected inputs according to the ignore mode; Byte Manipulators, that adjust the vector and result according to the selected width; a Failure RAM to store the first 256 failure masks; and a Serial Communication Port to communicate with the PC through the DIO interface.
Selected features of the GT5950 Module are controlled via host software through the platform PC system, fully programmable functions include:
● KGB/UUT or UUT/Memory Comparison Modes
● Learn Mode (Store UUT output to DIO memory)
● 32, 16, and 8 bit modes (GT5150)
● Compare Ignore masking enable
● 256 Failures storage enable w/PAUSE on FAIL
● Compare Ignore masking enable
A block diagram of the GT5950 is displayed in the figure below:
GT5950 Block Diagram
Min |
Type |
Max |
Units |
|
I/O Channels Per Module |
8, 16, 32 |
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Terminations |
Fixed Parallel (socketed)330/390W factory Installed |
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Operating Temperature Range |
0 to +50°C |
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Storage Temperature Range |
-20 to +70°C |
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Type |
245 (Balanced Output) |
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Output level HIGH |
4.5 |
V |
||
Output level LOW |
|
|
1.2 |
V |
Output HIGH Current |
-60 |
-115 |
-200 |
mA |
Output LOW Current |
60 |
115 |
200 |
mA |
Input level HIGH |
3.6 |
|
|
V |
Input level LOW |
|
|
0.8 |
V |
Dynamic Transition Current |
|
120 |
|
mA |
Power 5VDC |
|
500 |
|
mA |
Propagation Delay Output |
0.4 |
1.3 |
2.5 |
nS |
Propagation Delay Input |
1.5 |
3.5 |
5.0 |
nS |
Output Skew |
|
2.0 |
|
nS |
Size |
4.40 x 3.40Inch |
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Weight |
50g |
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