Henry Kolesnik wrote:

I've got an HP 8640B Opt 2, and am quite satisfied with it's performance but
this one doesn't go below 500KHz since it doesn't have Opt 1. I have
several choices and would like some user opinions if anyone has a
comparison. I can buy an HP 11710B down converter which will divide the 50
to 61 MHz band down to 10 KHz thru 11 MHz or an HP 11710A that divides 5 to
5.5 MHz to 5 KHz thru 500 KHz. The HP 11710 A&B are quite differnt in size,
appearnce and I wonder if the B is that much that I should only consider it?
In addition, I could try to find an HP 8640B with Opt 1 that includes an
internal audio oscillator that covers 20 Hz to 600 KHz, and sell my unit.
But I don't think I'd have phase lock available which is nice but probably
not mandatory. I'm not sure how the Opt 1 works with the attenuator.
At the present time I'm using a HP 606A a sizeable beast
that goes down to 50 Kc. I also have an HP 3586C which is quite good
as a Sig Gen, I got it becasue I wanted to listen to LF! So I is it an
11710,
an Opt 1 trade or something else, I wouldn't mind recovering some space!
Any user experience with these units appreciated.
thanks
hank wd5jfr


Can you use a function generator, or a test oscillator like the H-P
651 for frequencies below the lower limit on the H-P 8640? it is
something that comes in handy for other things anyway. The test
oscillator would stack on the 8640, its in the same style H-P cabinet.


--
19 days!


Michael A. Terrell
Central Florida