Witschi ChronoMaster User manual

Precision measuring device
ChronoMaster / ChronoMaster Air
Read the instructions prior to performing any task!

Wits-55131-CH, 3, en_GB
Translation of the original
© 2021 Witschi Electronic AG
Witschi Electronic AG
Bahnhofstrasse 26
3294 Büren a.A.
Switzerland
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.witschi.com
24.03.2021Precision measuring device ChronoMaster / ChronoMaster Air2

This document enables safe and efficient use of the Chrono-
Master/ChronoMaster Air precision measuring device (here-
after referred to as the “device” (applies to both models) or
“ChronoMaster Air”). The document is a component of the
device and must be kept near the device where it can be
accessed by personnel at all times.
This document is valid for ChronoMaster und ChronoMaster
Air. If the content is only valid for ChronoMaster Air, this is indi-
cated accordingly.
Personnel must have carefully read through and understood
this document before commencing work. The basic prerequi-
site for safe work is compliance with all the safety, warning
and process instructions specified in this document.
In addition, the local health and safety regulations and general
safety rules for the area in which the device is used apply.
Illustrations in this document help provide a basic under-
standing and may deviate from the actual design.
The content of this document is protected by copyright. Its use
is permitted within the context of device use. No other use is
permitted without the written approval of Witschi Electronic
AG.
Your point of sale can provide you with technical information.
You can find your nearest point of sale on our website at
http://www.witschi.com/de/firma/vertretungen
We are also always interested in hearing from you about your
experiences in using the device and any information that could
help us improve our products.
Address Witschi Electronic AG
Bahnhofstrasse 26
3294 Büren a.A.
Switzerland
Phone [phone]
Fax [phone]
E-mail ser[email protected]
Internet www.witschi.com
About this document
Copyright
Customer Service
Customer Service information
24.03.2021 Precision measuring device ChronoMaster / ChronoMaster Air 3

Table of contents
1 Product description................................................................ 6
1.1 Overview......................................................................... 6
1.2 Scope of delivery............................................................ 9
1.3 Software.......................................................................... 9
1.4 Modes.............................................................................. 9
1.5 Slide switch (ChronoMaster Air only)....................... 11
1.6 Bluetooth connection (ChronoMaster Air only)...... 11
1.7 Technical data.............................................................. 12
1.8 Signal LED..................................................................... 14
2 Safety..................................................................................... 16
2.1 Symbols in this document.......................................... 16
2.2 Risk of material damage............................................ 17
2.3 Rechargeable batteries............................................... 18
2.4 Intended use................................................................. 18
2.5 Owner’s responsibilities.............................................. 19
2.6 Personnel qualifications.............................................. 19
3 Commissioning the device.................................................. 20
3.1 Unpacking the device.................................................. 20
3.2 Requirements for the location................................... 21
3.3 Installing the software................................................ 22
3.4 Connecting the device................................................ 24
3.5 Assigning the device to a channel............................ 25
3.6 Charging the rechargeable batteries (Chrono-
Master Air only)............................................................ 28
4 Performing a measurement................................................ 29
4.1 Configuring measurement settings.......................... 29
4.2 Positioning the watch and starting a measure-
ment automatically..................................................... 29
4.3 Controlling the measurement using control keys.. 33
4.4 Monitoring and configuring the measurement...... 34
5 Device transport and storage............................................ 35
5.1 Device shutdown......................................................... 35
5.2 Device transport and storage.................................... 35
6 Device maintenance and cleaning.................................... 37
6.1 Safety during maintenance........................................ 37
6.2 Replacing the rechargeable batteries (Chrono-
Master Air only)............................................................ 37
6.3 Maintenance schedule............................................... 39
7 Troubleshooting.................................................................... 40
7.1 Error messages in the display software................... 40
7.2 Damage to the device................................................ 40
7.3 Troubleshooting........................................................... 40
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8 Disposal................................................................................. 42
8.1 Device disposal............................................................ 42
8.2 Rechargeable battery disposal (ChronoMaster Air
only)............................................................................... 42
9 Index....................................................................................... 43
Appendix................................................................................ 46
A Declaration of conformity .................................................. 47
B Declaration of conformity for ChronoMaster Air ........... 
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1 Product description
1.1 Overview
Fig. 1: ChronoMaster Air
No. Description
1 Pivoting microphone for measurement of the watch noises
2 Signal sensor for recording and transmission of the watch noises
• Ä Chapter 4.2 “Positioning the watch and starting a measurement automatically”
on page 29
3 Clamping jaw made of neoprene for clamping the watch or the watch movement
• Ä Chapter 4.2 “Positioning the watch and starting a measurement automatically”
on page 29
4 USB cable for connecting the device to the PC or tablet computer
• Ä Chapter 3.4 “Connecting the device” on page 24
5 Switching screw for setting the device for right-handers or left-handers
6 Control keys for frequently used functions: selecting the previous program or the next pro-
gram, restart and start/stop
• Ä Chapter 4.3 “Controlling the measurement using control keys” on page 33
7 USB-C port (ChronoMaster Air only)
8 ON/OFF slide switch (on bottom) (ChronoMaster Air only)
• Ä Chapter 1.5 “Slide switch (ChronoMaster Air only)” on page 11
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No. Description
9 2 × 2 AAA rechargeable batteries (on bottom) (ChronoMaster Air only)
• Ä Chapter 1.7 “Technical data” on page 12
10 LED signal lamp for visual indication of the device status and watch signal
• Ä Chapter 4.2 “Positioning the watch and starting a measurement automatically”
on page 29
• Ä Chapter 1.8 “Signal LED” on page 14
The ChronoMaster/ChronoMaster Air is a precision measuring
device that allows measurement of the rate deviation, the
amplitude and the beat error of mechanical watches. The
compact microphone features integrated measurement elec-
tronics.
All standard beat numbers can be determined automatically.
Manual adjustment for any beat numbers in a range from
3,600 to 72,000 A/h is possible as an alternative.
Watches can be tested in the 6 main testing positions, in 4 ver-
tical intermediate positions and in 2 special positions. The
position is identified automatically.
Using different measuring modes, watches can be tested with
the following escapements:
•Swiss lever escapement
•Cylinder escapement
•Duplex escapement
•Chronometer escapement
•Co-axial escapement
•AP escapement
Information on the measuring options
Further information on the measuring options
can be found under Ä “Measuring modes”
on page 9 and in the corresponding software
manual.
Two versions of the ChronoMaster software are available:
•ChronoMaster
•ChronoMaster PRO
All functions are available at all time when ChronoMaster Air
is used.
Measuring options
Versions
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The “Witschi Token Installer” software can be used to install
what is known as a token on the ChronoMaster to upgrade the
ChronoMaster to the PRO version.
Ordering a token
The token is created specifically for the Chrono-
Master to be upgraded. The token contains the
item number and the serial number of the Chro-
noMaster.
More information can be found in the software
manual.
Using what is known as a demo token, you can test the PRO
version for a limited time. The demo token features a time-
stamp, and can only be installed once on the ChronoMaster. If
new functions are provided by the manufacturer, a new demo
token can be created, which can be installed again once.
A USB cable is used to connect the device to the PC or tablet
computer. The measurements are controlled using the corre-
sponding “Chronoscope Service” display software.
The “Chronoscope Service” display software allows you to
choose between the “Diagram” and “Vario” display modes
for both versions. In addition, the “Trace” , “Sequence” ,
“Polar” , “Scope 1” and “Scope 2” display modes are
included with the ChronoMaster PRO version.
The ChronoMaster Air can either use a USB-C cable or a Blue-
tooth connection to communicate with the PC or tablet com-
puter.
Information on controlling the measurements
Further information on controlling the measure-
ments is to be found under Ä “Display modes”
on page 10, in Ä Chapter 4 “Performing a
measurement” on page 29 and in the corre-
sponding software manual.
Witschi Token Installer (for Chrono-
Master only)
Controlling the measurements
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1.2 Scope of delivery
The scope of delivery includes the ChronoMaster and a USB
flash drive with the following contents:
•“Chronoscope Service” display software
•Software manual in German, French, English, Spanish and
Italian as PDF files
Information on the display software
Further information on the display software can
be found in Ä Chapter 1.3 “Software”
on page 9 and Ä Chapter 3.3 “Installing the
software” on page 22, and in the corre-
sponding software manual.
The scope of delivery also includes:
•This document
•Calibration certificate
•Warranty information
•Dust cover
•4 × Eneloop AAA rechargeable batteries with charger (Chro-
noMaster Air only)
•USB-C cable (1 m) and charger (ChronoMaster Air only)
1.3 Software
The measurements are controlled using the “Chronoscope
Service” display software. It is provided on the supplied USB
flash drive.
Information on the display software
Information on installation and operation of the
display software is to be found in Ä Chapter 3.3
“Installing the software” on page 22 and in
the corresponding software manual.
1.4 Modes
The device provides various measuring modes that can be set
in accordance with the escapement type of the watch to be
tested.
Measuring modes
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Measuring
mode
Information
Standard Standard measuring mode for watches with
Swiss lever escapement.
Rate Measuring mode for the rate measurement
only of watches with cylinder, duplex or chro-
nometer escapement, in addition to watches
with unusual beat noises.
Special 1 co-
axial
Measuring mode for watches with co-axial
escapement.
Special 2 AP Measuring mode for watches with AP
escapement.
Special 3 – 9 Not active (reserved)
Determining the escapement type
You can find out the escapement type of the
watch for testing by consulting the watch man-
ufacturer.
Information in the software manual
Further information on the measuring modes
can be found in the corresponding software
manual.
The “Chronoscope Service” display software provides two
possible display modes for the ChronoMaster and Chrono-
Master PRO versions:
•Continuous diagram recording
•Vario
The following display modes are also available for the Chrono-
Master PRO version:
•Trace
•Sequence
•Polar
•Scope 1, Scope 2
All display modes are available when ChronoMaster Air is
used.
Display modes
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Information in the software manual
Further information on the display modes can
be found in the corresponding software
manual.
1.5 Slide switch (ChronoMaster Air only)
There is a slide switch on the bottom of the device. Before a
measurement can be performed, the slide switch must be
moved to the “ON” position. When the ChronoMaster Air is
connected to a USB power adapter or to a PC, the integrated
rechargeable batteries are charged, regardless of which posi-
tion the slide switch is set to.
Device downtime
Moving the slide switch to the “OFF” position,
thereby switching off the device, is recom-
mended in the event of an extended period of
downtime.
1.6 Bluetooth connection (ChronoMaster Air only)
Bluetooth® is a registered trademark of Blue-
tooth SIG, Inc.
The Bluetooth connection generally has a range of several
metres. The range is affected by many different factors. To
ensure that a measurement can be performed without inter-
ruptions, placing the ChronoMaster Air as close as possible to
the receiver is recommended. The signal strength of the Blue-
tooth communication is displayed as an icon both in the
header of the measurement window, and in the channel over-
view.
Meaning of the signal strength display:
Symbol Meaning
Strong signal strength
Range and display of signal
strength
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Symbol Meaning
Sufficient signal strength
Weak signal strength, insufficient
Faults affecting the Bluetooth connection
If more than one ChronoMaster Air is con-
nected to the PC or tablet computer by Blue-
tooth, or faults or interruptions occur, using the
external Bluetooth dongle “Laird” (item no.
JB15-BT851) is recommended. It can be ordered
from the company Witschi Electronic AG as an
accessory.
1.7 Technical data
Device Type no.
ChronoMaster 13.3210
ChronoMaster Air 13.3310
•TCXO quartz, high-frequency quartz time base
Stability ± 0.08 s/d
Ageing, 1st year ± 0.03 s/d
Function Measuring range Resolution Precision Comments
Rate deviation ± 999 s/d 1.0 s/d, 0.1 s/d or
0.01 s/d can be
selected
± 0.1 s/d Numerical display in
s/d
Amplitude 70° to 360° 1° or 0.1° can be
selected
± 0.4° Numerical display in
degrees
Lift angle adjustable
from 10° to 90°, resolu-
tion 0.1°
Beat error 9.9 ms 0.1 ms ± 0.1 ms Numerical display in
milliseconds
Configuration
Time base
Measuring capacity
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Designation Purpose
USB Connect the device to the PC or tablet computer for the following functions:
•Power supply
•Data transmission
•Controlling measurements
Bluetooth con-
nection (Chrono-
Master Air only)
Connect the device to the PC or tablet computer using Bluetooth for the fol-
lowing functions:
•Data transmission
•Controlling measurements
Data Value Unit
Technology Bluetooth
Low Energy
4.2
Bluetooth module CYBLE-2220
05-00
Output –18 to +3 dBm
Range, depending on placement 2 – 3 m
Module ID FCC ID:
WAP2005,
IC ID:
7922A-2005
Frequency 2.4 GHz
Data Value Unit
Brand Panasonic
Type Eneloop
AAA
Technology Nickel metal
hybrid
(NiMh)
Capacity 750 mAh
Charging time 4 – 5 hours
Device autonomy > 20 hours
Data Value Unit
Width 130 mm
Communication interfaces
Bluetooth connection (Chrono-
Master Air only)
Rechargeable batteries (Chrono-
Master Air only)
Dimensions and weight
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Data Value Unit
Height 110 mm
Depth 110 mm
Weight 180 g
Processor Quadcore processor i5 or i7
Operating system Windows 10, build number
14393 or higher
Working memory (RAM) at least 4 GB
USB interface 2.0, type A
Display Minimum resolution:
1366 × 768 pixels
Data Value Unit
Temperature range 10 – 50 °C
Relative humidity, maximum 10 – 80 %, non-
con-
densing
1.8 Signal LED
An LED is installed on the base of the device that uses several
different colours to indicate the device status:
Device status LED display Meaning
The slide switch is in the
“ON” position (Chrono-
Master Air only).
Lights up in green approx. 3 sec-
onds after switching on
Rechargeable battery charge suffi-
cient.
Lights up in red approx. 3 sec-
onds after switching on
Rechargeable battery charge not
sufficient.
ChronoMaster Air is not
connected by Bluetooth.
Flashes in blue Bluetooth is in ‘advertising mode’,
ChronoMaster Air can be found and
paired by the PC.
Lights up in blue for approx.
4 seconds
Connecting Bluetooth.
Recommended requirements for PC
or tablet computer
Operating conditions
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Device status LED display Meaning
ChronoMaster Air is opera-
tional.
Flashes in red Charge voltage of the rechargeable
batteries is low (< 10%). From this
moment on, only approx. 1 hour of
ChronoMaster Air operation
remains.
Device is performing
measurement.
Flashes in yellow Display of the beat noises of the
watch placed on the device.
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2 Safety
This section provides an overview of all the important safety
aspects that ensure personal protection and safe and trouble-
free operation of the device. There are additional, task-specific
warnings in the sections on the individual life cycle phases.
2.1 Symbols in this document
Safety information and warnings are identified by symbols in
this document. The safety information and warnings are intro-
duced by signal words that indicate the extent of the hazard.
NOTICE!
This combination of symbol and signal word
indicates a potentially hazardous situation that
can entail material damage if not avoided.
ENVIRONMENT!
This combination of symbol and signal word
indicates possible hazards to the environment.
This symbol draws your attention to useful tips
and recommendations and to information that
helps ensure efficient and trouble-free opera-
tion.
The following labels are used in this document to draw atten-
tion to instructions, results, lists, references and other ele-
ments:
Label Explanation
1., 2., 3. ...
Step-by-step instructions
ðResults of actions
References to sections of this document
and other applicable documents
Lists without a fixed order
Safety indications and warnings
Tips and recommendations
Additional labels
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2.2 Risk of material damage
NOTICE!
Damage to the USB cable or to the electronics
Damage to the USB cable or to the electronics
can damage the device.
– Only allow Customer Service to perform
work on the device’s electronics ( Ä “Cus-
tomer Service” on page 3).
– In the event of damage to the USB cable or
the plug, disconnect the USB plug and
arrange for a repair by Customer Service
( Ä “Customer Service” on page 3).
– Keep moisture away from live parts. It can
result in a short-circuit.
– Do not kink or jam USB cables, damage
them on sharp edges or bring them into con-
tact with heat sources.
– Check the USB cable and plug for damage
every time before using the device.
NOTICE!
Material damage due to opening the housing!
Opening the housing causes a risk of damaging
components inside the device or damaging the
housing itself.
– Never open the housing of your own accord.
– In the event of malfunctions or problems that
cannot be solved using the operation
manual, contact Customer Service ( Ä “Cus-
tomer Service” on page 3).
NOTICE!
Material damage due to use of non-recharge-
able batteries!
If non-rechargeable batteries are used in the
ChronoMaster Air, it could be damaged or
destroyed.
– Only use rechargeable NiMh batteries in size
AAA.
Damage to the USB cable or to the
electronics
Material damage due to opening
the housing
Material damage due to use of
non-rechargeable batteries (Chro-
noMaster Air only)
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2.3 Rechargeable batteries
WARNING!
Risk of injury in the event of improper use of
rechargeable batteries!
In the event of improper use of rechargeable
batteries, there is a risk that they will explode,
or that substances harmful to health could
escape that can cause burns in the event of
contact with skin, acute toxicity in the event of
ingestion, or blinding in the event of contact
with the eyes.
– To recharge the rechargeable batteries, con-
nect the ChronoMaster Air to the charger
provided, or to a PC.
– The rechargeable batteries can remain in the
ChronoMaster Air when being recharged
from a PC or laptop.
– Never short circuit the contacts (positive or
negative terminal) of the rechargeable bat-
teries.
2.4 Intended use
The ChronoMaster/ChronoMaster Air precision measuring
device is intended solely for measuring mechanical watches to
determine the rate deviation, amplitude and beat errors.
The device can test watches of any size due to the clamping
jaw.
The intended use includes compliance with all the information
in this document.
Any use beyond or other than the intended use shall be con-
sidered misuse.
NOTICE!
Material damage due to misuse!
Misuse of the device can result in material
damage.
– Never immerse the device in water or other
liquids. Keep the device away from rain and
wet conditions at all times.
– Never clamp any objects other than watches
or watch movements on the device.
For ChronoMaster Air only
Misuse
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2.5 Owner’s responsibilities
The device is intended for commercial use. The owner of the
device is subject to the statutory obligations of occupational
health and safety.
In addition to the safety indications and warnings in this docu-
ment, you must comply with the safety, occupational health
and safety and environmental protection requirements that
apply to the device’s area of application.
The following applies in particular:
•Throughout the entire period that the device is in operation,
the owner shall check that the operating instructions com-
piled by the owner comply with the current versions of regu-
lations and must adapt the instructions as necessary.
•The owner shall ensure that all persons who handle the
device have read and understood this document. In addi-
tion, the owner shall train personnel at regular intervals.
•The owner shall ensure that the service intervals described
in this document are complied with.
•The owner shall ensure that the service intervals for the
components are complied with.
2.6 Personnel qualifications
This document stipulates the following qualifications for the
operator:
Customer Service
Certain work may only be performed by Customer Service.
Customer Service personnel have been trained extensively for
all work performed on measuring devices.
Work that is the specified task of Customer Service personnel
may not be performed by unauthorised personnel. Contact
Customer Service when this work is due.
Operator
The operator of the device has all the necessary knowledge
and training to handle watches. In addition, the operator has
been instructed by the owner about the tasks entrusted to him
or her and about possible hazards in the event of improper
behaviour. The operator may only perform tasks that go
beyond normal operation where this is provided for in the
operating instructions and the owner has specifically entrusted
the operator with such tasks.
Owner’s obligations
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3 Commissioning the device
3.1 Unpacking the device
The device is delivered by a local logistics company. All the
components included in the scope of delivery are delivered
together in a single package.
Upon receipt of the delivery, check it immediately to ensure
that it is complete and undamaged.
If there is any visible external transport damage, proceed as
follows:
1. Do not accept the delivery.
2. Make a note of the scope of damage on the carrier’s
delivery note.
3. Lodge a complaint.
Claims for damages can only be made within
the applicable claim periods.
Lodge a complaint for any damage as soon as
it is identified. Claims for damages can only be
made within the applicable claim periods.
1. Take the device out of its packaging.
2. Keep the original packaging for any later transport or
storage ( Ä Chapter 5 “Device transport and storage”
on page 35).
Delivery
Transport inspection
Unpacking the device
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