Re: about 5209 output display

From: Signal Recovery
email: info@signalrecovery.com
Model: 5209
Date: 04 Apr 2005

Comments

Are you using the latest version of the manual (which you can download from this site)? In brief, the 5209's LCD opetation depends on the setting of the OUTPUT mode. The two common settings are: % FS Display Mode When set to the % FS mode, the OUTPUT LCD and the analog panel meter indicate the output expressed as a percentage of the present full-scale sensitivity. With the reference phase shifter adjusted for maximum output, a full-scale input signal will give an OUTPUT LCD indication of 100%, a positive full-scale deflection of the analog panel meter and +10 V at the OUT output connector. SIGNAL Display Mode This setting operates in the same way as the % FS mode except that, if the sensitivity is set to a “3 range”, a full-scale input will give an LCD indication of “3”, “30” or “300”, as opposed to the “100” indication that would occur if % FS were selected. This allows the input signal amplitude, in voltage or current units, to be read directly from the LCD and the back-lit sensitivity indictators For example, if the full-scale sensitivity is set to 30 mV, the reference phase shifter adjusted for maximum output and a 20 mV sinusoidal signal applied, then the then OUTPUT LCD indication will be 20. The units applying to this figure are those shown by the lit units indicator in the SENSITIVITY section, in this case “mV”. Hence the measured signal is 20 mV rms.