Chronoskop CHR-9 Timegrapher
User manual
www.CHRONOSKOP.com
5
1. Introduction
1.1. General information on the device function
The Chronoskop CHR-9 timegrapher is an electronic measuring and testing device for the
production, repair and service of mechanical watches. The Timegrapher allows as well an
acoustic as a light barrier measurement with an external light barrier. Values such as Rate,
Beat Number, Beat Error and the average duration of a half-wave can be determined. With
sufficient quality of the acoustic signal, the amplitude of the clock can be measured. In a
long-term measurement, the temporal behavior of the rate can be observed on a graph. The
measurement results are displayed as graphically and as numerical values on the illuminated
touch display. During the measurement, you can switch between different display modes.
The target rate can be determined automatically, selected manually or individually set and
saved.
The acoustic measurement is realized with the built-in or an external piezo microphone. To
decouple acoustic noise, the built-in piezo is mounted on a 5 mm thick foam. The signal gain
can be adjusted with the rotary knob in the front wall. To measure a watch or a small clock, it
is to be placed on the piezo disk of the built-in microphone.
