Gleave and Company Watch Parts, Clock Parts and Tools since 1948

£

For testing Mechanical Watches
The Chronoscope S1 is the instrument for effective and
professional testing of watches by the repair service, by
specialised shops and in the industrial field. Noble design,
functional layout of the operating elements and the large
LCD display, provide a comfortable handling of the instrument.
Different display modes as well as the graphic presentation
of the beat noises are available.

With the automatic microphone, available as accessory, the
watch can be tested in 3 to 6 different positions. The
VARIO display mode provides fast overview of the quality
and stability of the rate and amplitude. VARIO is the ideal
mode for the inspection at the point of sales in the specialised
shop and for the incoming watch inspection.

General Description
The Chronoscope S1 is an instrument with sophisticated
and simple handling. It provides a fast and easy way to set
all parameters. Totally 20 test programs can be created
with individual measurement parameters and the number
of test positions for the measuring cycle.

Continuous Diagram Recording
The rate deviation is continuously drawn on the screen.
Measured values for rate deviation, amplitude and beat error
are displayed numerically.
The numerical results for rate, amplitude and beat error
measurements are displayed at the first expiration of the
selected measuring time. The average values are updated
every 2 seconds. The evaluated diagram part is marked
with the scrolling bar.

Vario Display Mode
The Vario mode measures the rate and amplitude stability
over a longer time range. This clearly arranged display
mode is the ideal extension for a short or a long examination
(up to 100 hours).
During the measurement it is possible to toggle between
the displays of the measurement values of the rate and the
amplitude.
The following values are constantly updated as long as the
measurement process is running:
–– smallest measured value
–– largest measured value
–– absolute average value over the entire measuring time
–– elapsed measuring time.

Sequence Display Mode
The automatic microphone Micromat S is the ideal accessory
for the realisation of test sequences. During the program
preparation 3 to 6 test positions can be defined, including
stabilisation and measuring time.
This neatly structured table clearly displays the measurement
results in each position as well as the average and the
largest difference between all positions.
By means of the Interface S1 (accessory) also the previous
model Micromat P and the Micromat Tourbillon can be attached.

Measuring Cycle for Tourbillon Watches
The automated microphone also allows tourbillon watches
to be tested. For performing the test, the microphone rotates
four times around its axis while the watch is set in the
vertical position. The measuring time corresponds to the
revolution time of the microphone, in most cases 60 seconds/
revolution (same time those the tourbillon cage for a
revolution needs).
The values of the rate, amplitude and beat error measured
for each angular position are displayed at the end of the
test cycle. The maximal difference between the different
angular positions and their average is also displayed.

Scope Display Mode
The Scope function graphically displays the acoustic beat
noise of the watch. A detailed analysis of the beat noise,
i.e. of the state of the escapement, can be carried out.
Signal levels are represented as an envelope curve. The
measured value of the amplitude is numerically displayed.
The display is based on one of the following three time intervals:
20 ms, 200 ms and 400 ms.

Rate Measurement of Quartz Watches
The rate accuracy of quartz and tuning fork watches can be
measured with signal sensor Expert Q, available as accessory.

Quartz Display Mode
–– Measurement of analogue quartz watches
The example shows the rate recording of an analogue
quartz watch with a motor pulse period of 1 second.
The digital adjustment (inhibition) every 60 seconds can
readily be identified.
The numerical result for the rate accuracy is displayed at
the first expiration of the measuring time.
–– Measurement of digital quartz watches
The working frequency of the watch’s LCD display is
evaluated to provide the rate measurement. All frequencies
up to 128 Hz that are a multiple of 4 Hz can
be processed.
–– Measurement of tuning fork watches
The oscillation frequency of the tuning fork is magnetically
recorded and evaluated to provide the rate measurement.

Compact and Space Saving
With its ergonomic design and compact assembly, the
Chronoscope S1 is the ideal instrument when space is at
a premium.

Additional Functions
–– Log printout of the numerical measurement results or
of the display contents on the Witschi thermo printer,
available as accessory.
–– Export of the numerical results and graphics (screen
contents) to a PC by means of the software AutoPrint
(accessory).
–– Real time clock. Date and time are displayed and printed
in the log.
–– The Witschi GPS receiver (accessory) allows the time

Technical Data

Measurement Possibilities
Rate deviation, amplitude and beat error of mechanical
watches. Diagram recording of the beat noises. Rate deviation
from quartz and tuning fork watches by means of the
signal sensor Expert Q, available as accessory.

Beat Number
Automatic selection of all common beat numbers.
Manual selection of any beat number between 3’600
to 43’200 b/ h.

Measuring Modes
–– Standard mode for watches with the Swiss
escapement.
–– Special1 Mode for watches with coaxial escapement.
–– Special2 Mode for watches with AP escapement.
–– Special4 Mode with specific amplitude filter for the
measurement of watches with the Swiss escapement.

Gain Control
Automatic. Manual control facility for watches with stray or
unusual beat noises.

Display Modes
–– Cont Continuous diagram recording of the beat noise.
Measured values for rate deviation, amplitude and beat
error are displayed numerically.
–– Vario Rate and amplitude stability check over a longer
time range, up to 100 hours.
–– Scope Graphic display of the beat noises with adjustable
time interval: 20, 200 and 400 ms.
–– Seq. Only with the optional Micromat S and older
Micromat versions possible.
Stabilisation time: adjustable from 2 s to 99 s and Aut.
Measuring cycle: adjustable for 3 to 6 test positions.
–– Quartz Rate measurement of quartz- and tuning fork
watches. Only with the optional signal sensor Expert Q
possible.
Rate accuracy: numerical display in s/d.
Resolution: selectable in 0.1 s/d or 0.01 s/d.
Measuring range: ± 999 s/d (quartz mode ± 9.9 s/d).
Accuracy: ± 0.1 s/d (quartz mode ± 0.01 s/d.
Amplitude: numerical display in degrees.
Resolution: 1° or 0.1°. Measuring range from 80° to 360°.
Accuracy: ± 0.4°.
Lift angle adjustable from 10° to 90°. Resolution: 0.1°.
Beat error: numerical display in milliseconds.
Resolution: 0.1 ms. Measuring range: 9.9 ms.
Accuracy: ± 0.1 ms
Time scale adjustable from 1 to 9 mm/ms (zoom).
4 selectable tracing speeds.
The last three screen contents are callable.
base of the Chronoscope

Functions
Adjustable measuring time: 2, 4, 6, 8, 10, 20, 30, 40, 50,
60, 120, 180, 240 s and automatic selection of the shortest
possible measuring time. For the quartz mode: 2, 4, 6, 8,
10, 20, 30, 40, 60, 120, 180, 240 s and Aut.
Selectable languages: English, German, French, Spanish
and Italian.
Acoustic check: built in loud speaker.
Interfaces:
–– RS232 to attach the Witschi thermo printer.
–– RS232 to attach a PC or the Witschi GPS receiver.

Details
Time base: pre-aged and thermo-stabilised high frequency
quartz, OCXO.
Stability: ± 0.004 s /d between 10° and 50° C.
Aging for the first year: max. ± 0.03 s /d.
Front panel: colourless anodised.
Rear cover and stand: plastic, anthracite coloured.
Display: LCD graphic display, 240 x 128 pixels, illuminated.
Dimensions: 225 x 200 x 87 mm (w x h x d).
Weight: 3.4 kg, microphone and mains adapter included.
Mains connection: mains adapter for 230 V~ or 120 V~,
1.2 A.

Accessories
Witschi thermo printer with Item JB01-MCP7810
universal mains adapter 90 V~ - 260 V~.
Thermo paper, roll. Item JB01-MM58-DPU20-N
Micromat S. Item 23.26PK1
Micromat Tourbillon. Item 13.15PK1
Interface S1 for the connection of Item 11.22.251
the Micromat P/Tourbillon and the Expert Q.
Clamping microphone for wall clocks. Item 13.1820
Optoelectr. sensor for pendulum clocks. Item 13.1620
Tripod for optoelectronic sensor Item 13.16.201
AutoPrint: Software for result and Item 64.55.901PK1
graphic file transmission to a PC.
Software M1/S1/MMC. Item 11.20.931PK1
PC-Software for the administration
of the measuring results. Displays the frequency analysis,
isochronisms and unbalance centre of the balance wheel.
Network capability with WicoTrace.
For up to 2 independent measurement channels.