The fastest sweep the 7603 is "specified for" is 5ns/div which is obtainable with a 7B53A set the highest sweep (.05us/div) with the x10 multiplier engaged.
I'm amazed you find the 7B85 or 7B87 work well with the 7603 as I thought the delay line in the 7603 was too short for these.
FWIW if you are looking for detail in a sweep at faster than 5ns/div then you also need a (much) faster vertical amp.
David
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-----Original Message-----
From:
[email protected] <
[email protected]> On Behalf Of Jouko Koskinen
Sent: 08 March 2021 16:50
To:
[email protected]Subject: [TekScopes] 7603 horizontal performance
Has anybody tried to improve the horizontal amplifier to have a bit better performance?
Regards,
Jouko