PCE Health and Fitness PCE-DSX 20 User manual

© PCE Instruments
PCE-DSX 20 Stroboscope
User Manual
User manuals in various languages (français,
italiano, español, português, nederlands, türk, polski,
русский, 中文) can be found by using our
product search on: www.pce-instruments.com
Last change: 19 January 2022
v1.0
English

© PCE Instruments
Contents
1Safety notes........................................................................................... 1
2Specifications........................................................................................2
3Delivery scope.......................................................................................2
4System description...............................................................................3
4.1 Front and back................................................................................................................. 3
4.2 Top and bottom................................................................................................................ 4
5Operation ............................................................................................... 4
5.1 Preparation ...................................................................................................................... 4
5.2 Set flash frequency .......................................................................................................... 5
5.3 Rotational speed measurement........................................................................................ 5
5.4 External input................................................................................................................... 6
5.5 Synchronised output / trigger output................................................................................. 7
5.6 Movement analysis .......................................................................................................... 7
6Notes ...................................................................................................... 7
6.1 Duration of use................................................................................................................. 7
6.2 Replacing the flash lamp.................................................................................................. 7
7Warranty.................................................................................................8
8Disposal ................................................................................................. 8

© PCE Instruments
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1 Safety notes
Please read this manual carefully and completely before you usethe device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.
•The device must only be used as described inthis instructionmanual. If used otherwise,
this can cause dangerous situations for the user and damage to the meter.
•The instrument may only be used if the environmental conditions (temperature, relative
humidity, …) are within the ranges stated in the technical specifications. Do not expose
the device to extreme temperatures, direct sunlight, extreme humidity or moisture.
•Do not expose the device to shocks or strong vibrations.
•Be careful withrotating objects! Even if they appear motionless in thestroboscopic light,
the risk of injury is high.
•Do not look directly into the flash as this could injure your eyes.
•Do not point thestroboscope at other people. Light pulses ofmore than 5 Hz may cause
people with photosensitive epilepsy to suffer a seizure.
•Do not touch the lamp with bare hands.
•The case should only be opened by qualified PCE Instruments personnel.
•Never use the instrument when your hands are wet.
•You must not make any technical changes to the device.
•The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,
no abrasives or solvents.
•The device must only be used with accessories from PCE Instruments or equivalent.
•Before each use, inspect the case for visible damage. If any damage is visible, do not
use the device.
•Do not use the instrument in explosive atmospheres.
•The measurement range as stated in the specifications must not be exceeded under
any circumstances.
•Non-observance of the safety notes can cause damage to the device and injuries to
the user.
We do not assume liability for printing errors or any other mistakes in this manual.
We expressly point to our general guarantee terms which can be found in our general terms of
business.
If you have any questions please contact PCE Instruments. The contact details can be found at
the end of this manual.

© PCE Instruments
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2 Specifications
Function
Range
Resolution
Accuracy
Flashes / speed
50 ... 35000
RPM/FPM
<1000 PRM: 0.1 RPM
±(0.05 % of rdg.
+ 2 dgt.)
<9999 RPM: 1 RPM
<35000 RPM: 10 RPM
Flash frequency
0.833 ... 583.3 Hz
<599.9 RPM: 0.001 Hz
±(0.05 % of rdg.
+ 2 dgt.)
<5999 RPM: 0.01 Hz
<35000 RPM: 0.1 Hz
Phase shift
0 ... 359°
1°
±(0.1% of rdg. + 2
dgt.)
Ext. trigger
0 ... 1200 ms
<1000 PRM: 0.1 RPM
±(0.1% of rdg. + 2
dgt.)
<9999 RPM: 1 RPM
<35000 RPM: 10 RPM
Level ext. trigger
High: 2.5 ... 12 V
Low: <0.8 V
Lamp type
Xenon flash
Flash response time
10 ... 30 µs
Colour temperature
6500 K
Flash output
8 joules
Beam angle
80 °
Power supply
PCE-DSX 20: 230 V AC 50/60 Hz
PCE-DSX 20-US: 110 V AC 50/60 Hz
Power consumption
240 mA @ 3600 FPM
Operating conditions
0 ... 50 °C / 32 ... 122 °F; max. 80 % RH
Dimensions
230 x 110 x 150 mm / 9 x 4.3 x 5.9“
Weight
approx. 1145 g / 2.5 lbs
3 Delivery scope
1 x stroboscope PCE-DSX 20
1 x plug for trigger input / output
1 x power cable
1 x user manual

© PCE Instruments
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4 System description
4.1 Front and back
①
Screws protective glass
⑦
Ext. trigger input / signal output
②
Xenon flash lamp
⑧
230 V AC input
③
Internal / external selection key
⑨
MODE key
④
Key X 2 (doubling)
⑩
Key +
⑤
Key ÷2 (halving)
⑪
Key -
⑥
+ / - rotary switch
⑫
On / off switch

© PCE Instruments
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4.2 Top and bottom
①
Handle
⑥
HZ mode LED
②
Display
⑦
Internal mode LED
③
RPM mode LED
⑧
External mode LED
④
DEG mode LED
⑨
Trigger mode LED
⑤
mSec mode LED
⑩
Tripod thread
5 Operation
5.1 Preparation
•Before first use, remove the film from the front protective glass and the display.
•Connect the stroboscope to the power supply using the power cable.
•Make sure that the voltage supply values indicated on the type plate correspond to your
mains supply.

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5.2 Set flash frequency
5.2.1 Quick adjustment
Use the X 2 and ÷2 keys to quickly change the flash frequency.
"X 2" doubles the currently set flash frequency.
Example based on flash frequency 100/min:
100 →X 2 →200 →X 2 →400
"÷2 " halves the currently set flash frequency.
Example based on flash frequency 400/min:
400 →÷ 2 →200 →÷ 2 →100
5.2.2 Moderate adjustment
Use the + / - rotary switch at the rear side for moderate flash frequency adjustment.
Turning to the right increases the flash frequency and turning to the left decreases the flash
frequency.
When turning slowly, only the last digit of the flash frequency is changed. When turning faster,
the tens or hundreds of the flash frequency are changed.
5.2.3 Fine-tuning
Use the "+" and "-" keys for fine adjustment.
Per keystroke, the last digit of the flash frequency is changed by the value 1.
Holding the key changes the tens or hundreds of the flash frequency.
5.3 Rotational speed measurement
•Place a unique mark on the object to be measured and switch on the machine.
•Switch on the stroboscope via the switch on the back.
•Use the "Int / Ext Signal" key to select the Internal option.
•Aim the light cone at the object to be measured.
•Set a flash frequency that is above the expected speed of the object to be measured.
•Change the flash frequency as described in chapter 5.2 until the mark shows a single
standing image. If 2, 3 or more standing marks are visible, reduce the flash frequency
until only one standing mark is visible.
•To check, double the flash frequency with the "X 2" key. Now you should see 2
opposite markings. Double the flash frequency again with the "X 2" key. Now you
should see 4 standing marks in a cross arrangement.

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5.4 External input
•Connect an external signal cable to the signal input on the rear side. (connector plug is
included in the delivery scope)
•Switch on the stroboscope via the switch on the back.
•Use the "Int / Ext Signal" key to select the External option.
•Within this setting, it is not possible to adjust the flash frequency on the device.
An external trigger signal that is outside the controllable flash frequency of the stroboscope is
signalled by flashing of the display and the flash triggering is set.
5.4.1 Rotational speed
•Select speed with the "MODE" key.
•As soon as an external signal is present, the stroboscope flashes in time with the
external signal. The corresponding rotational speed is shown on the display.
5.4.2 Phase shift delay mode (ms/degree)
If the input signal is 360 ° (see sketch), you can delay the flash by up to 359°. A correct setting is
only possible with a stable trigger signal.
•Use the "MODE" key to select deg or mSec.
•The flash delay is changed with the "+ / - rotary switch".
The flash frequency is maintained but, depending on the setting, triggered with a
delay.

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5.4.2.1 Application example
You want to view a rotating object with external triggering.
The viewing area or the mark of the rotating object is outside or not perfectly within your field of
view. With the phase shift / delay of the flash triggering, you can let the field of view / the marking
move optically around the axis of rotation to the ideal position.
5.5 Synchronised output / trigger output
The output signal is output via the "Ext. triggering / signal output" socket.
5.6 Movement analysis
•Set the stroboscope ideally as described in chapter 5.3.
•Now slowly press the "+ / - rotary switch". This triggers a slow motion effect that allows
you to view the movement more closely.
6 Notes
6.1 Duration of use
The maximum time of use of the stroboscope per measurement should not exceed the following
times. The pause between measurements should be at least 10 minutes.
Flash frequency
Duration
<2000 RPM
4 hours
2001 ... 3600 RPM
2 hours
3601 ... 8000 RPM
60 minutes
>8000 RPM
30 minutes
6.2 Replacing the flash lamp
The flash lamp must be replaced if the unit flashes erratically at a set flash frequency of more
than 3600. The lamp should be replaced by a qualified technician.
•Switch off the instrument and disconnect it from the power supply.
•Wait 15 minutes to allow all electronic components to discharge.
•Loosen the four screws of the lamp cover on the front side.
•Remove the protective glass and the reflector.
•Detach the flash lamp from the base.
•Insert a new flash lamp.
•Mount the reflector and the protective glass.
•Fasten the screws of the front cover.
Attention!
Do not touch the flash lamp with your fingers. Use protective gloves.

© PCE Instruments
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7 Warranty
You can read our warranty terms in our General Business Terms which you can find here:
https://www.pce-instruments.com/english/terms.
8 Disposal
For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament
applies. Due to the contained pollutants, batteries must not be disposed of as household waste.
They must be given to collection points designed for that purpose.
In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use
them or give them to a recycling company which disposes of the devices in line with law.
For countries outside the EU, batteries and devices should be disposed of in accordance with
your local waste regulations.
If you have any questions, please contact PCE Instruments.

© PCE Instruments
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PCE Instruments contact information
Germany France Spain
PCE Deutschland GmbH PCE Instruments France EURL PCE Ibérica S.L.
Im Langel 26 23, rue de Strasbourg Calle Mayor, 53
D-59872 Meschede 67250 Soultz-Sous-Forets 02500 Tobarra (Albacete)
Deutschland France España
Tel.: [phone] Téléphone: [phone] Tel. : [phone]
Fax: [phone] Numéro de fax: [phone] Fax: [phone]
[email protected] [email protected] [email protected]
www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol
United Kingdom Italy Turkey
PCE Instruments UK Ltd PCE Italia s.r.l. PCE Teknik Cihazları Ltd.Şti.
Unit 11 Southpoint Business Park Via Pesciatina 878 / B-Interno 6 Halkalı Merkez Mah.
Ensign Way, Southampton 55010 Loc. Gragnano Pehlivan Sok. No.6/C
Hampshire Capannori (Lucca) 34303 Küçükçekmece - İstanbul
United Kingdom, SO31 4RF Italia Türkiye
Tel: [phone] Telefono: [phone] Tel: [phone]
Fax: [phone] Fax: [phone] Faks: 0212 705 53 93
[email protected] [e-mail] in[email protected]
www.pce-instruments.com/english www.pce-instruments.com/italiano www.pce-instruments.com/turkish
The Netherlands United States of America
PCE Brookhuis B.V. PCE Americas Inc.
Institutenweg 15 1201 Jupiter Park Drive, Suite 8
7521 PH Enschede Jupiter / Palm Beach
Nederland 33458 FL
Telefoon: [phone] USA
[email protected] Tel: [phone]
www.pce-instruments.com/dutch Fax: [phone]
[email protected]
www.pce-instruments.com/us