[time-nuts] HP 5300B - HP 5308A Counter Time Base Question...
Dave M
dgminala at mediacombb.net
Sat Nov 1 15:54:25 EDT 2014
The time basse oscillator is only a crystal around a logic gate; not
exciting at all. The adjustment is on the 5300A unit. There is a hole in
the rear panel of the case that allows adjustment. You are going to need a
calibrated standard of some kind to calibrate it against.
The manuals for both the 5300A and the 5309A are on the Keysight web site at
http://www.keysight.com/main/facet.jspx?t=79910.g.3&cc=US&lc=eng&sm=g&no=0
Cheers,
Dave M
Burt I. Weiner wrote:
> I was recently given a HP-5300B / 5308A counter. I thought it might
> be handy when I'm at an AM broadcast transmitter and needed to make
> "rough" frequency measurements. It turns out that at 1000 kHz it
> reads about 4.5 Hz high. Looking inside I'm not sure if there's a
> time base adjustment. I looked at the on-line manuals available and
> I don't find any reference to adjusting the time base
> frequency. Does anyone here know anything about these counters? Is
> there a schematic available? I'm not looking for precision, but 4.5
> Hz at 1 MHz seems a tad much.
>
> Burt, K6OQK
>
> Burt I. Weiner Associates
> Broadcast Technical Services
> Glendale, California U.S.A.
> biwa at att.net
> www.biwa.cc
> K6OQK
>
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