The lower right soft key controls the averaging of the readings. If it is
set to ‘NOAVERAGE’, the phase readings are updated at a rate of
approximately three per second. If it is set to ‘AVERAGE’, the display
shows a running average of the last eight readings, to reduce the
effects of digit bobble. The ‘AVERAGE’ mode is particularly useful
when adjusting azimuth in analog tape machines.
In bargraph mode, the AMPLITUDE keys are used to set the endpoints
of the graph. After selecting the endpoint to change by pressing the
appropriate soft key, the ±10 dB keys will change the endpoint in
increments of 90 degrees. The INC and DEC buttons will change the
endpoint in increments of 10 degrees.
To obtain the specified accuracy, analog inputs must have amplitude
greater than about 20 mV and must have signal-to-noise ratio greater
than about 40 dB. If either input drops below about 8 mV (or below
10% of the selected fixed input range when the bargraph
HOLDRANGE function is used) the display will show the word ‘Low’,
and there will be no phase reading. If the S/N ratio in either channel is
less than 40 dB, the reading may be unstable, especially at low
frequencies.
4 Functions
Function Descriptions Phase
ATS-1 Dual Domain User's Manual 4-25
To Next Page
Loading...
Need help?
General
