If the power supplies to check out of the 184 There is something else that it could be. The clock on the 184 is not "stable" as we think of today. When I did the alignment on mine there was a +/- 25 Hz swing on the mine 10Mhz reference. This was caused by the heating and cooling of the crystal in the oven. Centering this 50Hz swing on 10Mhz. The unit is in spec and everything is working but with sensitive enough counters and other modern equipment the breathing of the clock is detectable. Still an awesome unit but if absolute stability is needed a TG501 with an external time base will tighten things up.
Zen
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-----Original Message-----
From:
[email protected] <
[email protected]> On Behalf Of Dale H. Cook via groups.io
Sent: Sunday, January 26, 2025 4:58 AM
To:
[email protected]Subject: Re: [TekScopes] Type 184 10MHz with a much lower frequency superimposed.
On 26 Jan 2025 3:08 am, Tom Lee wrote:
I¡¯d take a quick look at the supply rails before diving too deeply.
That is a universal principle of electronic servicing - you need to start with the power supplies because a PS problem is a fundamental problem.
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Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
