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Question posted by larsbak on May 1st, 2022

No Light I Range Led's

No ligthts in range led's and filter leds and no response with input signal. Power led is on and +÷15 V ok

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Answer #1: Posted by SonuKumar on May 1st, 2022 10:34 PM

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Related Sennheiser UPM 550 Manual Pages

Instructions for Use - Page 2

... according to DIN 45405 RMS-rectification according to CCIR Filter1kHz Reserve filter '.,Reserve filter External filter Function "Test" OJ Input Range selector switch \ID~Input "External filter" ~.) Potentiometer "Ca!. 0 dB for extern al filter" UPM 550-1 ~ Input selector switch I.~ Input Level adjustment Switch UPM 550 Commutateur secteur Prise de sortie 60 Q/0,1 V Prise de sortie 600...

Instructions for Use - Page 7

...15 dB. 1 The amplifiers of the filters. Direct measurement of harmonic distortion of this standard the indication on via externally connected filters. 9. The inputs are measured. g. LED-indicators for noise measurements laid down in the attenuation range of the UPM 550 have a wide overload range. This avoids reading errors at UPM 550-1) The time-constants of a 1 kHz signal...

Instructions for Use - Page 8

... indicating meter will light e) Modified indieating...switeh (15), may be...UPM 550,-1). Two LED's below the power transformer, the four elearly labelied fuse holders are selected by means of the set of the instrument, remove rear panel and pull out the b) Input seleetor-switeh (21). The measuring ranges are e) Filter "1 kHz STOP". This is done as the TEST-position is selected an audio signal...

Instructions for Use - Page 9

... to aeeept the additional filterboard. Filter Characteristics and Frequency Response of 1 kHz filter (1 kHz pass). 1. The front-panel ineludes two pushbutton Res. 1 and Res. 2 already fully wired to a harmonie distortion indieation of a reeorded 333 Hz-signal at the test piece output. 3. B 17-1 UPM 550- B 17-15 UPM 550- STOP" (UPM 550-1). External Filters The rear panel is fitted with...

Instructions for Use - Page 10

... UNIVERSEl UPM 550/UPM 550-1 G'e,,""" ""'","oe Schema bloc UPM550 Geo'"",,, d'I sd. Voltage ranges Frequency range lor peak reetrllcatlon Ranges 1 mV10100 V Ranges 30 ~V to DIN 45405 and DIN45500 dB (A)-Welghtlng 1IIIer 10 DI N 45 500 1000 Hz Stop 1IIIer Setting range 01 level potentiometer Optlonal plug-In Illters Operating lemperature Power requrrements Dimensions Welght UPM 550 0 30...