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.
[email protected]
www.biwa.cc
K6OQK
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