Hi,
The SR620 has a Z80 dedicated to update the X/Y DACs. For some trimmings
it really helps.
The SR620 is a mix of a relatively flexible counter, yet it has some
limits, which can be annoying for some measurements. In the end I kind
of like it.
Cheers,
Magnus
On 02/23/2016 01:13 PM, Bob Camp wrote:
Hi
You may have cleaned up a dirty pot wiper as well …
The SR620 has X/Y outputs? Who knew? … that’s how often that feature
gets used around here.
Bob
On Feb 23, 2016, at 12:14 AM, Joseph Gray <jg...@zianet.com> wrote:
Ignore the problem with EXT trigger. I did a factory reset and now it
is working. I should have thought to reset it to begin with.
Joe Gray
W5JG
On Mon, Feb 22, 2016 at 8:14 PM, Joseph Gray <jg...@zianet.com> wrote:
Finally got an SR620 at a decent price. I'm going through the
Functional Tests and the Performance Tests now. So far, I have two
anomalies.
Pg 62 Functional Test - EXT input. When I vary the EXT trigger knob, I
don't get the trigger LED, except that it flashes briefly at one spot
as I move the knob from high to low.
XY outputs - text at the top is slanted and text near the middle right
is overlaid. I don't know if I care about this, as I am unlikely to
use this feature.
I can't test the printer port. No Epson printer. I probably don't care
about this, either.
Pg 63 Performance Test - Timebase frequency is 15 Hz high. I will adjust later.
Timebase accuracy +/- 0.0035 Hz passes.
This is far as I have gotten. After I get a bite of dinner, I will proceed.
The EXT trigger test not working worries me. Perhaps I am doing something wrong?
Joe Gray
W5JG
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