Thanks for the info, Greg!
-Dave
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On Saturday, August 17, 2019, 12:52:08 PM PDT, Greg Muir via Groups.Io <big_sky_explorer@...> wrote:
Dave,
One small caveat regarding the addition of the DP501 if you ever consider picking one up.? Making it work properly with the DC509 requires addition of interconnections between the DP501 and DC509 which is usually accomplished through adding a mating jumpered D connector to the interface connector (option 02 somewhat rarely found) on the rear of the TM50x power module (mainframe).? The DP501 is a divide-by-16 prescaler meaning that any signal passed through it in the prescale mode is divided by 16 instead of a ¡°normal¡± decade factor.? Tek came up with a somewhat unusual idea where they alter the DC509 clocking to make it work with the unusual divided signal from the DP501 to display a normal count.
If you do not possess a TM50x power module with the D interface connector on the rear you will have to go in and add a few jumpers to the backplane.? The interconnection arrangement between the two modules is called out in the DP501 manual.? I keep a internally modified TM502 for this purpose.
Since the DP501 is only useful between 100 MHz and 1.3 GHz, it possesses a front panel button to allow you to bypass the prescaling function at lower frequencies to allow the DC509 to operate in its normal mode.? This changes the counter back to its normal clocking as well as keeps you from having to juggle cables between the two when looking at those lower frequencies.
Greg
