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7D01: Difference between revisions
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Note about external clock rate performance.
(7D01 pic without DF for template) |
(Note about external clock rate performance.) |
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{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Channels | | {{Spec | Channels | | ||
* 4 channels at 1016 bits/channel | * 4 channels at 1016 bits/channel, maximum external clock period 10ns (100MHz) | ||
* 8 channels at 508 bits/channel | * 8 channels at 508 bits/channel, maximum external clock period 20ns (50MHz) | ||
* 16 channels at 254 bits/channel | * 16 channels at 254 bits/channel, maximum external clock period 40ns (25MHz) | ||
'''Note about external clock rates''' (from Jim Mauck): | |||
''When I was a Tek Service Technician I worked on the 7D01. For several years I tested every 7D01 I worked on (and that was a lot of them) with a 100MHz external clock in 16 channel mode. I would use a DF2 and set it to reacquire continuously as long as the 7D01 memory was the same as the original data I stored into the DF2 memory. The analyzer would run for hours without error. The funny part is that it wasn't until I had been doing this for several years that I realized it wasn't specified to run at that frequency. I continued to test them that way even after I discovered my error. However the instrument exceeding the specifications might be due to the data source providing a generous setup and hold time relative to the active clock edge.'' | |||
}} | }} | ||
{{Spec | Sampling Rate | 10 ns to 5 ms per sample (1—2—5) or external clock up to 50 MHz}} | {{Spec | Sampling Rate | 10 ns to 5 ms per sample (1—2—5) or external clock up to 50 MHz}} | ||