Just feed the PPS into the scope trigger on step 2.
The low repetition rate on the PPS would make this difficult on an
analog scope; on a digital scope it is easy. You can use any
sub-harmonic that is less than or equal the counter reference frequency
(10 MHz).
Brent
On 4/24/2015 3:45 PM, d0ct0r wrote:
Hello,
The input: HP 5386A which I would like to calibrate, Well warmed Tremble
Thunderbolt (1PPS only), 10 Mhz Datum OCXO (unknown accuracy), Rigol
1101E Oscilloscope.
The goal is to calibrate counter to read the Datum OCXO.
===========================
Reading the manual for 5386A, there is simple schema for calibration:
1. Connect HP 5386A 10Mhz OUTPUT to Oscilloscope
2. Connect Frequency Standard to Ext. Trigger on Oscilloscope
3. Adjust the frequency on 5386A TCXO for minimum sideways movement of
10 Mhz signal
However, my Trimble TB 10Mhz output is currently in use. I have only
1PPS signal available. The HP manual do not mention what exactly
frequency needs to be on "Frequency Standard" connected to Ext. Trigger.
Is there any method/option I could apply to calibrate HP counter ?
Thanks !
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