Renishaw RENGAGE RMP400 User manual

RMP400 high accuracy radio machine
probe
Installation guide
H-6570-8501-01-A
Draft 5 16/04/18

Renishaw part no: H-6570-8501-01-A
Issued: ??.????
© 2018 Renishaw plc. All rights reserved.
This document may not be copied or reproduced
in whole or in part, or transferred to any other
media or language, by any means, without the
prior written permission of Renishaw plc.
The publication of material within this document
does not imply freedom from the patent rights of
Renishaw plc.
Draft 5 16/04/18

i
Contents
Before you begin .............................................................1.1
Before you begin ............................................................1.1
Disclaimer ..............................................................1.1
Trade marks .............................................................1.1
Warranty................................................................1.1
Changes to equipment .....................................................1.1
CNC machines ...........................................................1.1
Care of the probe .........................................................1.1
Patents .................................................................1.2
EU declaration of conformity ...................................................1.3
FCC Information to user (USA only) .............................................1.3
WEEE directive .............................................................1.3
Radio approval .............................................................1.4
Safety ....................................................................1.5
RMP400 basics ...............................................................2.1
Introduction ................................................................2.1
Getting started ...........................................................2.1
System interface..........................................................2.2
Trigger Logic™ ...........................................................2.2
Probe modes...............................................................2.2
Configurable settings.........................................................2.2
Switch-on/switch-off methods................................................2.2
Enhanced trigger filter .....................................................2.4
Auto-reset function ........................................................2.4
Multiple probe mode.......................................................2.4
Acquisition mode .........................................................2.5
RMP400 dimensions .........................................................2.6
RMP400 specification ........................................................2.7
Recommended styli..........................................................2.9
Draft 5 16/04/18

RMP400 installation guide
ii
Contents
System installation ...........................................................3.1
Installing the RMP400 with an RMI or RMI-Q ......................................3.1
Operating envelope .......................................................3.1
Positioning the RMP400 and RMI or RMI-Q ....................................3.2
Performance envelope .....................................................3.2
Preparing the RMP400 for use .................................................3.3
Fitting the stylus ..........................................................3.3
Installing the batteries .....................................................3.4
Mounting the probe on a shank ..............................................3.5
Stylus on-centre adjustment.................................................3.6
Calibrating the RMP400 ......................................................3.7
Why calibrate a probe? ....................................................3.7
Calibrating in a bored hole or on a turned diameter...............................3.7
Calibrating in a ring gauge or on a datum sphere ................................3.7
Calibrating the probe length .................................................3.7
Trigger Logic™ ...............................................................4.1
Reviewing the probe settings ..................................................4.1
Multiple probe mode settings ..................................................4.2
Probe settings record ........................................................4.3
Changing the probe settings ...................................................4.4
RMP400 – RMI partnership....................................................4.6
RMP400 – RMI-Q partnership..................................................4.7
Operating mode.............................................................4.8
Maintenance .................................................................5.1
Maintenance ...............................................................5.1
Cleaning the probe ..........................................................5.1
Changing the batteries .......................................................5.2
Fault-finding .................................................................6.1
Parts list .....................................................................7.1
Draft 5 16/04/18

1.1
Changes to equipment
Renishaw reserves the right to change equipment
specifications without notice.
CNC machines
CNC machine tools must always be operated by
fully trained personnel in accordance with the
manufacturer’s instructions.
Care of the probe
Keep system components clean and treat the
probe as a precision tool.
Before you begin
Before you begin Warranty
Equipment requiring attention under warranty
must be returned to your equipment supplier.
Unless otherwise specifically agreed in writing
between you and Renishaw, if you purchased
the equipment from a Renishaw company, the
warranty provisions contained in Renishaw’s
CONDITIONS OF SALE apply. You should consult
these conditions in order to find out the details
of your warranty but, in summary, the main
exclusions from the warranty are if the equipment
has been:
• neglected, mishandled or inappropriately used;
or
• modified or altered in any way except with the
prior written agreement of Renishaw.
If you purchased the equipment from any other
supplier, you should contact them to find out what
repairs are covered by their warranty.
Disclaimer
RENISHAW HAS MADE CONSIDERABLE
EFFORTS TO ENSURE THE CONTENT OF THIS
DOCUMENT IS CORRECT AT THE DATE OF
PUBLICATION BUT MAKES NO WARRANTIES
OR REPRESENTATIONS REGARDING
THE CONTENT. RENISHAW EXCLUDES
LIABILITY, HOWSOEVER ARISING, FOR ANY
INACCURACIES IN THIS DOCUMENT.
Trade marks
RENISHAW and the probe symbol used in the
RENISHAW logo are registered trade marks of
Renishaw plc in the United Kingdom and other
countries. apply innovation and names and
designations of other Renishaw products and
technologies are trade marks of Renishaw plc or
its subsidiaries.
Google Play and the Google Play logo are
trademarks of Google LLC.
Apple and the Apple logo are trademarks of
Apple Inc., registered in the U.S. and other
countries. App Store is a service mark of Apple
Inc.,registered in the U.S. and other countries.
All other brand names and product names used
in this document are trade names, trade marks, or
registered trade marks of their respective owners.
see Section 1, “Before you begin”
Draft 5 16/04/18

1.2
Before you begin
Patents
Features of the RMP400, and other similar
Renishaw products, are the subject of one or
more of the following patents and/or patent
applications:
Patents will be listed
here when we have
them.. Possibly all
RMP40 patents and
strain gauge patents
(Steve to confirm)
Draft 5 16/04/18

1.3
Before you begin
C
FCC Information to user (USA
only)
47 CFR Section 15.19
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful
interference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation.
47 CFR Section 15.21
The user is cautioned that any changes or
modifications not expressly approved by
Renishaw plc or authorised representative could
void the user’s authority to operate the equipment.
EU declaration of conformity
Renishaw plc declares that the RMP400 complies
with the applicable standards and regulations.
Contact Renishaw plc or visit
www.renishaw.com/mtpdoc for the full EU
declaration of conformity.
WEEE directive
The use of this symbol on Renishaw products
and/or accompanying documentation indicates
that the product should not be mixed with
general household waste upon disposal. It is the
responsibility of the end user to dispose of this
product at a designated collection point for waste
electrical and electronic equipment (WEEE) to
enable reuse or recycling. Correct disposal of
this product will help to save valuable resources
and prevent potential negative effects on the
environment. For more information, please contact
your local waste disposal service or Renishaw
distributor.
Draft 5 16/04/18

1.4
Before you begin
Radio approval
Will be listed here, when there are some (testing
to take place first).
Draft 5 16/04/18

1.5
Before you begin
Safety
Information to the user
The RMP400 is supplied with two non-
rechargeable ½AA lithium-thionyl chloride
batteries (approved to BS EN 62133:2013
[IEC 62133:2012]). Once the charge in these
batteries is depleted, do not attempt to recharge
them.
The use of this symbol on the batteries,
packaging or accompanying documents indicates
that used batteries should not be mixed with
general household waste. Please dispose of
the used batteries at a designated collection
point. This will prevent potential negative effects
on the environment and human health which
could otherwise arise from inappropriate waste
handling. Please contact your local authority or
waste disposal service concerning the separate
collection and disposal of batteries. All lithium and
rechargeable batteries must be fully discharged or
protected from short circuiting prior to disposal.
Please ensure replacement batteries are of the
correct type and are fitted in accordance with
the instructions in this manual (see page 5.2,
“Changing the batteries”), and as indicated on the
product. For specific battery operating, safety and
disposal guidelines, please refer to the battery
manufacturer’s literature.
• Ensure that all batteries are inserted with the
correct polarity.
• Do not store batteries in direct sunlight or rain.
• Do not heat or dispose of batteries in a fire.
• Avoid forced discharge of the batteries.
• Do not short-circuit the batteries.
• Do not disassemble, pierce, deform or apply
excessive pressure to the batteries.
• Do not swallow the batteries.
• Keep the batteries out of the reach of children.
• Do not get batteries wet.
• If a battery is damaged, exercise caution when
handling it.
Please ensure that you comply with international
and national battery transport regulations when
transporting batteries or the products.
Lithium batteries are classified as dangerous
goods and strict controls apply to their shipment
by air. To reduce the risk of shipment delays, if you
need to return the products to Renishaw for any
reason, do not return any batteries.
In all applications involving the use of machine
tools or CMMs, eye protection is recommended.
The RMP400 has a glass window. Handle with
care if broken to avoid injury.
Information to the machine supplier/
installer
It is the machine supplier’s responsibility to ensure
that the user is made aware of any hazards
involved in operation, including those mentioned
in Renishaw product literature, and to ensure
that adequate guards and safety interlocks are
provided.
Under certain circumstances, the probe signal
may falsely indicate a probe seated condition. Do
not rely on probe signals to halt the movement of
the machine.
Information to the equipment installer
All Renishaw equipment is designed to comply
with the relevant EC and FCC regulatory
requirements. It is the responsibility of the
equipment installer to ensure that the following
guidelines are adhered to, in order for the product
to function in accordance with these regulations:
• any interface MUST be installed in a position
away from any potential sources of electrical
noise, i.e. power transformers, servo drives etc;
• all 0 V/ground connections should be
connected to the machine “star point” (the “star
point” is a single point return for all equipment
ground and screen cables).This is very
important and failure to adhere to this can
cause a potential difference between grounds;
Draft 5 16/04/18

1.6
Before you begin
• all screens must be connected as outlined in
the user instructions;
• cables must not be routed alongside high
current sources, i.e. motor power supply cables
etc, or be near high-speed data lines;
• cable lengths should always be kept to a
minimum.
Equipment operation
If this equipment is used in a manner not specified
by the manufacturer, the protection provided by
the equipment may be impaired.
Draft 5 16/04/18

2.1
RMP400 basics
Introduction
The RMP400 offers an unrivalled combination
of size, accuracy, reliability and robustness
and, allows high-accuracy probing on small to
medium machining centres or other machines
where line-of-sight problems affect optical signal
transmission.
Successfully combining patented RENGAGE™
strain gauge technology with the patented
frequency hopping radio transmission system of
the RMP40, the RMP400 provides existing probe
users with a simple upgrade to solid-state strain
gauge technology and all the associated benefits
this brings:
• excellent 3D performance to allow probing of
contoured surfaces;
• improved repeatability in all probing directions;
• a low triggering force combined with low pre-
travel variation to provide high accuracy, even
when used with long styli;
• a proven ten-fold improvement in life (10 million
triggers); ????
• the elimination of reseat failures;
• high resistance to machine tool vibration;
• resistance to shock and false triggering
through the use of solid state accelerometers.
In addition to providing high-accuracy
measurement on your machine tool, the RMP400
also offers:
• Faster calibration:
On complex 3D parts, it is common to
measure in several different directions. Each
direction of a standard mechanical probe must
be calibrated, to ensure that the pre-travel
variation is compensated in the measurement.
Performing this calibration for every 3D
direction can be time-consuming.
The RMP400 has almost no pre-travel
variation, so a single calibration value may be
used for any probing angle in 2D or 3D. This
results in a vastly reduced calibration time. An
additional benefit is a corresponding reduction
in errors introduced by environmental changes
within the machine during a long calibration
cycle.
• The ability to be used in applications
where axial and radial reorientations are
used, enabled by the use of solid state
accelerometers:
The auto-reset function is required and
recommendations should be followed for
optimum metrology performance.
Getting started
Three multicolour probe LEDs provide visual
indication of selected probe settings.
For example:
• Switch-on and switch-off methods
• Probe status – triggered or seated
• Battery condition
Batteries are inserted or removed as shown (see
page 3.5, “Installing the batteries”) for further
information).
On insertion of batteries, the LEDs will begin
to flash (see page 4.1, “Reviewing the probe
settings”).
see Section 2,
“RMP400 basics”
Draft 5 16/04/18

2.2
RMP400 basics
System interface
The RMI and RMI-Q are integrated interfaces/
receivers used to communicate between the
RMP400 probe and the machine control.
Trigger Logic™
Trigger Logic (see Section 4, “Trigger Logic™”) is
a method that allows the user to view and select
all available mode settings in order to customise
a probe to suit a specific application. Trigger
Logic is activated by battery insertion and uses
a sequence of stylus deflections (triggering) to
systematically lead the user through the available
choices to allow selection of the required mode
options.
A Trigger Logic app is available that simplifies this
process with clear, interactive instructions and
informative videos and is available for download
on the following app stores.
or
Current probe settings can be reviewed by
simply removing the batteries for a minimum of
five seconds, and then replacing them to activate
the Trigger Logic review sequence.
Probe modes
The RMP400 probe can be in one of three modes:
Standby mode –Probe is waiting for a switch-on
signal.
NOTE: The RMP400 will enter hibernation mode
should the system interface be powered off or
out of range for a period of 30 seconds (only
applicable to “radio on” mode).
Operational mode –When activated by one of
the switch-on methods, the probe is switched on
and ready for use.
Configuration mode – Ready to change the
probe settings using Trigger Logic.
Configurable settings
Switch-on/switch-off methods
The following switch-on/switch-off options are
user-configurable.
•Radio on/Radio off
•Radio on/Timer off
•Spin on/Spin off
•Spin on/Timer off
Draft 5 16/04/18

2.3
RMP400 basics
RMP400 switch-on method
Switch-on options are configurable
RMP400 switch-off method
Switch-off options are configurable
Probe ready time
Radio on
Radio switch on is commanded by
machine input.
Radio off
Radio switch off is commanded by
machine input. A timer automatically
switches the probe off 90 minutes
after the last trigger if it is not turned
off by machine input.
Timer off (timeout)
Timeout will occur 12, 33 or 134
seconds (user configurable) after the
last probe trigger or reseat.
1.7 seconds
maximum.
Spin on
Spin at 500 rev/min for one second
minimum.
Spin off
Spin at 500 rev/min for one second
minimum. A timer automatically
switches the probe off 90 minutes
after the last trigger if it is not spun.
Timer off (timeout)
Timeout will occur 12, 33 or 134
seconds (user configurable) after the
last probe trigger or reseat.
2.5 seconds. (The
probe must be
stationary for 2.5
seconds minimum
after it has stopped
spinning.)
NOTES:
In “radio on” mode, the switch-on time is user
selectable “fast” or “standard” when using
RMI-Q (selection is made in RMI-Q). Otherwise
1.7 seconds.
For more information on the user selectable
switch-on time when operating with RMI-Q, please
refer to the installation guide RMI-Q radio machine
interface (Renishaw part no. H-5687-8504).
In “radio on” mode, the switch-on time assumes
a good radio communication link. In a poor RF
environment this may rise to a maximum of
3.0 seconds.
In “spin on” mode, the one second starts from
the moment the spindle reaches 500 rev/min.
The RMP400 must be on for a minimum of
one second before being switched off.
Draft 5 16/04/18

RMP400 installation guide
2.4
RMP400 basics
Enhanced trigger filter
Probes subjected to high levels of vibration or
shock loads may output signals without having
contacted any surface. The enhanced trigger filter
improves the probe’s resistance to these effects.
When the filter is enabled, a constant 8 ms or
16 ms delay is introduced to the probe’s output.
The factory setting is 8 ms. If false triggering is
noticed, then consider increasing the filter delay to
16 ms.
Auto-reset function
In previous strain gauge products, the probe was
required to be turned off during reorientation
moves. The auto-reset function in the RMP400
can compensate for stylus forces, resulting from
changes in probe orientation, that can cause the
probe to trigger.
This feature is controlled by solid state
accelerometers and is suitable for applications
where axial and radial reorientation of the probe is
applied.
To achieve optimum metrology performance
when the auto-reset function is turned on, a dwell
is recommended before making a programmed
move that follows any reorientation of the probe.
When using a stylus of up to 150 mm long,
a 0.2 second dwell is necessary. In most
applications the machine response time will
adequately provide this.
When using a heavy stylus configuration, or a
stylus longer than 150 mm, it is recommended
that the RMP400 should be turned off during
reorientation moves.
Multiple probe mode
The RMP400 can be configured, using Trigger
Logic, to allow multiple radio probes in “spin on/
spin off” or “shank on/shank off” to be used with a
single RMI or RMI-Q.
Up to four RMP400s can be used with a single
RMI-Q in “radio on/radio off” mode. For further
details of this functionality, please refer to the
installation guide RMI-Q radio machine interface
(Renishaw part no. H-5687-8504).
NOTES:
Multiple probe mode is a function of the RMP400,
as such, the option will not appear when the
“radio on” option has been selected.
RMP400 probes which are set to “multiple probe
mode on” can coexist alongside any number of
RMP400 probes set to “multiple probe mode off”.
To allow multiple radio probes to work in close
proximity, and with a single RMI or RMI-Q,
16 choices of “mode on” colours are available,
each representing a different machine tool
installation. (see page 4.2, “Multiple probe
settings”).
All probes operating with a single RMI or RMI-Q
must be set to the same “mode on” colour choice;
any multiple probes located on adjacent machines
must all be set to an alternative “mode on” colour
choice.
NOTE: Each probe per “mode on” colour choice
needs to be partnered with the RMI or RMI-Q.
By configuring multiple probes to a single “mode
on” colour choice, all probes using this “mode on”
colour choice will have the same identity.
The probe to be partnered is partnered after
selecting the multiple probe mode setting and
choosing the “mode on” option. (see page 4.4,
“Changing the probe settings”).
There is no limit to the number of probes that can
be used with a single RMI or RMI-Q so long as
they all have the same “mode on” colour choice.
All RMP400 probes are factory set to “mode off”.
The addition of any further probe(s) into a single
probe installation will require that all probes are
reconfigured to the same “mode on” colour choice
and that one of the probes is then repartnered
with the RMI or RMI-Q.
Draft 5 16/04/18

2.5
RMP400 basics
The addition of any further probe(s), or
replacements, into a multi-probe installation can
be achieved simply through the reconfiguration of
the probe to the same “mode on” colour choice.
Acquisition mode
System set-up is achieved using Trigger Logic and
powering-on the RMI or RMI-Q.
Partnering is only required during initial system
set-up. Further partnering is only required if either
the RMP400 or RMI/RMI-Q is changed.
NOTES:
Systems using the RMI-Q can be partnered with
up to four RMP400s manually. Alternatively this
can be achieved by using ReniKey; a Renishaw
machine macro cycle which does not require the
RMI-Q to be power cycled.
For more information or to download ReniKey free
of charge visit:
www.renishaw.com/mtpsupport/renikey
Partnering by ReniKey is not available for RMI.
Partnering will not be lost by reconfiguration of
probe settings or when changing batteries, except
where multiple probe mode is selected.
Partnering can take place anywhere within the
operating envelope.
Draft 5 16/04/18

A range of probe-ready shanks is
available from Renishaw
50.5 (1.99)
19 (0.75)
Battery cassette
RMP400 window
11°
11°
Ø40 (Ø1.57)
50 (1.97)
M4 stylus
Probe status LED
2.6
RMP400 basics
RMP400 dimensions
Dimensions given in mm (in)
Stylus overtravel limits
Stylus length ±X/±Y Z
50 (1.97) 12 (0.47) 6 (0.24)
100 (3.94) 22 (0.87) 6 (0.24)
Draft 5 16/04/18

2.7
RMP400 basics
RMP400 specification
Principal application Workpiece inspection and job set-up on multi-tasking machines,
machining centres and gantry machining centres.
Dimensions Length
Diameter
50.5 mm (1.99 in)
40 mm (1.57 in)
Weight (without shank) With batteries
Without batteries
262 g (9.24 oz)
242 g (8.54 oz)
Transmission type Frequency hopping spread spectrum (FHSS) radio
Radio frequency 2400 MHz to 2483.5 MHz
Switch-on methods Radio M-code or spin on
Switch-off methods Radio M-code, timer or spin off
Probe feedrate (minimum) 3 mm/min (0.12 in/min) (see note 6)
Spindle speed (maximum) 1000 rev/min
Operating range Up to 15 m (49.2 ft)
Receiver/interface RMI or RMI-Q combined interface and receiver unit
Sense directions ±X, ±Y, +Z
Unidirectional repeatability 0.25 µm (10 µin) 2s– 50 mm stylus length (see note 1)
0.35 µm (14 µin) 2s– 100 mm stylus length
X,Y (2D) form measurement
deviation
±0.25 µm (10 µin) – 50 mm stylus length (see note 1)
±0.25 µm (10 µin) – 100 mm stylus length
X,Y, Z (3D) form
measurement deviation
±1.00 µm (40 µin) – 50 mm stylus length (see note 1)
±1.75 µm (70 µin) – 100 mm stylus length
Stylus trigger force
(see notes 2 and 5)
XY plane (typical minimum)
+Z direction (typical minimum)
0.06 N, 6 gf (0.22 ozf)
2.55 N, 260 gf (9.17 ozf)
Stylus overtravel force
XY plane (typical minimum)
+Z direction (typical minimum)
1.04 N, 106 gf (3.74 ozf) (see note 3)
5.50 N, 561 gf (19.78 ozf) (see note 4)
Stylus overtravel XY plane
+Z plane
±11°
6 mm (0.23 in)
Note 1 Performance specification is tested at a standard test velocity of 240 mm/min (9.45 in/min) with a 50 mm (1.97 in)
carbon fibre stylus. Significantly higher velocity is possible depending on application requirements.
Note 2 Trigger force, which is critical in some applications, is the force exerted on the component by the stylus when the
probe triggers. The maximum force applied will occur after the trigger point (overtravel). The force value depends on
related variables including measuring speed and machine deceleration. RENGAGE™ equipped probes offer ultra-
low trigger forces.
Note 3 Stylus overtravel force in the XY plane typically occurs 70 µm (2755.91 µin) after the trigger point and rises by
0.1 N mm 10 gf/mm (9.1 oz/in) until the machine tool stops (in the high force direction and using a 50 mm (1.97 in)
carbon fibre stylus).
Note 4 Stylus overtravel force in the +Z direction occurs 10 µm (393.70 µin) to 11 µm (433.07 µin) after the trigger point and
rises by 1.2 N/mm, 122 gf/mm (109.60 oz/in) until the machine tool stops.
Note 5 These are the factory settings, manual adjustment is not possible.
Note 6 Speeds below 3 mm/min commonly occur when manually moving the probe using the handwheel with a very fine
feedrate.
TBC by end of March
TBC
Draft 5 16/04/18

RMP400 installation guide
2.8
RMP400 basics
Environment IP rating IPX8, BS EN 60529:1992+A2:2013
(IEC 60529:1989+A1:1999+A2:2013)
IK rating IK01 (BS EN IEC 62262: 2002) [for glass
window]
Storage temperature –10 °C to +70 °C (+14 °F to +158 °F)
Operating temperature +5 °C to +50 °C (+41 °F to +122 °F)
Battery types 2 × ½AA 3.6 V lithium-thionyl chloride (LTC)
Battery reserve life Approximately one week after a low battery warning is first given (based
on 5% usage).
Typical battery life See the table below.
Typical battery life
Battery type
Spin switch on Radio switch on
Continuous use
Standby life 5% usage
(72 minutes/day)
Standby life 5% usage
(72 minutes/day)
Lithium-thionyl
chloride 230 days 90 days 230 days 90 days 165 hours
NOTE: Using RMP400 with “fast radio on” mode will result in a 20% reduction in standby battery life
and a 10% reduction in 5% usage battery life.
Draft 5 16/04/18

2.9
RMP400 basics
A
D
C
B
Recommended styli
High modulus carbon fibre styli are designed to
minimise pre-travel and improve accuracy, as
the stem material is extremely stiff. This inherent
stiffness makes the following styli most suitable for
strain gauge applications.
Part number A-5003-7306
Carbon fibre
A-5003-6510
Carbon fibre
A-5003-6511
Carbon fibre
A-5003-6512
Carbon fibre
ABall diameter mm (inch) 6 (0.24) 6 (0.24) 6 (0.24) 6 (0.24)
BLength mm (inch) 50 (1.97) 100 (3.94) 150 (5.91) 200 (7.88)
CStem diameter mm (inch) 4.5 (0.18) 4.5 (0.18) 4.5 (0.18) 4.5 (0.18)
DEWL mm (inch) 38.5 (1.52) 88.5 (3.48) 138.5 (5.45) 188.5 (7.42)
Mass in g (oz) 4.1 (0.14) 6.2 (0.22) 7.5 (0.26) 8.7 (0.31)
The featured range of solid carbon fibre styli
ensure the best possible performance of the
RMP400.
It is possible that the featured range of solid
carbon fibre styli may not be suitable for every
RMP400 application and that it may be necessary
to select specialised styli configurations to meet
specific application requirements.
In applications where specialised styli are to be
used, it may be beneficial to reduce the speed of
probing moves. It has been seen in some cases
that specialist styli configurations do not exhibit
the probing characteristics and performance
that would have otherwise been expected and
achieved when using standard styli. Reducing the
speed of the probing move may, in some cases,
improve the performance of the probe.
When selecting components for an application
specific stylus, it is recommended that
a configuration with the least number of
components is chosen. The stylus diameter
should always be as large as possible and the
overall stylus length kept to a minimum. If a stem
with a reduced diameter is required, then it is
recommended that an M4 stem with a short length
and reduced diameter is selected.
Draft 5 16/04/18

2.10
RMP400 basics
This page is intentionally left blank.
Draft 5 16/04/18