Mahr Maxum III User manual

Instruction Manual
Digital Indicator
Document Part No. 2239028 Rev. D
Maxum III
1

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Maxuum III Digital Electronic Indicator 2239028 Rev D
Models
Part No. Short
Range
Part No.
Long Range Description Stem
Diameter
Stem Length
mm / inch
2033101 2033102**
No output
0.375” 17mm / 0.670”
2033103 2033104 0.375” 38mm / 01.50”
2033105 2033106 8mm 17mm / 0.670”
2033107 2033108 8mm 38mm / 1.50”
2033111 2033112**
6 Pin output
0.375” 17mm / 0.670”
2033113 2033114 0.375” 38mm / 01.50”
2033115 2033116** 8mm 17mm / 0.670”
2033117 2033118 8mm 38mm / 1.50”
2033121 2033122
10 pin output
0.375” 17mm / 0.670”
2033123 2033124 0.375” 38mm / 01.50”
2033125 2033126** 8mm 17mm / 0.670”
2033127 2033128 8mm 38mm / 1.50”
2033001
Display Unit No Stem
Use with Digital
Transducer
2033091 - 2033099
2033011
2033021

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Maxuum III Digital Electronic Indicator 2239028 Rev D
CONTENTS
1.0 PRECAUTIONS AND GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.0 PRODUCT FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Maxum III Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.1 Controls - Standard Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.2 Controls - Enhanced Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.0 Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Entering Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.1 Exiting Setup Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.2 Changing inch / metric units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Changing Measuring Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Changing Digital Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Changing Digital Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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Maxuum III Digital Electronic Indicator 2239028 Rev D
3.5 Selecting Analog Fan Scale/ Overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.5.1 Setting-up the Indicator Analog Fan Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.6 Installing and Removing the Overlay Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.6.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.6.2 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.7 Selecting Data Output Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.0 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1 Operating the Maxum III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.1 Off-Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.2 Over-Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.1.3 Standard Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.1.4 Initial Setup -Standard/TSP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.1.5 Setting Upper and Lower Tolerance Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1.6 Reapportioning Measuring Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2 Enhanced Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.2.1 Enhanced/Actual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

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Maxuum III Digital Electronic Indicator 2239028 Rev D
4.2.1.1 How to change between the Standard Mode and the Enhanced Mode: . . . . . . . 28
4.2.2 Enhanced/Dynamic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.2.1 Minimum Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.2.2 Maximum Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.2.3 Total Indicated Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.2.4 Hold / Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.2.5 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1 Battery Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1.1 Changing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.1.1 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.1.2 Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2 Checking Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3 Cleaning the Spindle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.3.1 Contact Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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Maxuum III Digital Electronic Indicator 2239028 Rev D
5.4.1 Resetting Digital Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.0 Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.1 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.0 Output Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.1 STD Maxum Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.1.1 Power Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.1.2 Signal Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.1.3 Hardwired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1.4 Possible Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1.5 Signal Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.1.5.1 HOLD/UPDATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.1.5.2 RESET/ZERO (Wake-Up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.2 ASCII Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.2.1 Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

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Maxuum III Digital Electronic Indicator 2239028 Rev D
8.2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.2.3 Sleep Mode/Over range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.2.4 Electrical Characteristics (ASCII) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.2.5 Power Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.3 Digimatic / BCD Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.4 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.4.1 Digimatic Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.4.1.1 Timing Diagram for Digimatic Data Transfer Method . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.4.1.2 BCD Encoded Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.4.2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.5 Mating Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.0 Quick Step Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

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Maxuum III Digital Electronic Indicator 2239028 Rev D
These instructions apply to the Maxum III Indicators and Indicat-
ing units:
1.0 PRECAUTIONS AND GENERAL INFORMATION
All Maxum III Models: Your new Maxum III Digital Electronic
Indicator will provide both Standard and Enhanced measure-
ments. When placed in the Enhanced Mode, the Maxum III pro-
vides the capability of measuring relative maximum, minimum
and T.I.R. values
Maxum III units come with battery installed and operate in the
traditional Standard Maxum Mode. When not in use the Indica-
tor or Indicating unit is left in its Sleep mode which conserves
battery power. ( ’2.1 Maxum III Features’ on page 9).
The unit also includes removable overlays for duplication of the
previous Maxum and Maxum Plus model design where
needed.
Maxum III units are ruggedly built to withstand hard use, and
their gasketed case, crystal and stem assemblies resist
encroachment by most fluids. However, Maxum III Indicators,
Indicating Units and Digital Transducers should never be
immersed. Regularly inspect all seals and spindle boots to guard
against fluid penetration.
Digital Output Models:
To prevent contaminants from entering the 6 or 10-pin digital
output connectors, the dust cap should always be firmly in
place whenever an output cable is not connected.
Digital Transducers:
Any Maxum III Indicating Unit can be used with any Maxum III
Digital Transducer. Make sure the transducer connector is prop-
erly aligned with the indicator connector before connecting
them. Maxum III Indicating Units may not be used with Maxum
and Maxum Plus style remote transducers. Maxum III Digital
Transducers must be used with an adapter cable to connect to
Maxum and Maxum Plus Indicating Units ( ’7.0 Specifications’
on page 42 for adapter cable part numbers).

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Maxuum III Digital Electronic Indicator 2239028 Rev D
NOTE: To disconnect the Digital Transducer, pull the connector
straight out; do not twist or unscrew the connector. Also, do
not severely bend, twist or strain the transducer cable.
Figure 1
2.0 PRODUCT FEATURES
2.1 Maxum III Features
Switchable Inch / Metric Units
Allows the indicator to display in ‘in’units or ‘mm’ units. Select-
able in the Setup Mode.
Tolerance Limits
Allows the selection of left and right tolerance limits within the
analog scale displayed.
Range Signal
There are two conditions that occur when the readings are
over-range. The Off-Scale condition occurs when the fan display
exceeds the analog scale and is indicated by a flashing segment
at the most left or right segment location. The Over-Range con-
dition occurs whenever the digital reading is exceeded and is
indicated by a blank display that shows both the polarity sign
and the in/mm units icon. Unit is still active and not to be con-
fused with the Sleep Mode condition.
Selectable Digital Resolution
There are two selections for digital resolution with each Digital
Range selection (see below):
Selectable Digital Range
Digital Range Available Resolutions
±0.100 inch / ±1.99 mm 0.0005” or 0.0001” /
0.005 mm or 0.001mm
±0.040 inch / ±1.0 mm 0.0005” or 0.0001” /
0.005 mm or 0.001 mm
±0.0199 inch / ±0.199 mm 0.00005” or 0.00002” /
0.001 mm or 0.0005 mm

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Maxuum III Digital Electronic Indicator 2239028 Rev D
The Short Range Maxum III unit is capable of selecting two dig-
ital ranges. The Short Range model can select between ±0.040
and ±0.199 in (±1.00 and ±0.199 mm) ranges. The Long
Range model has one range of ±0.100 in (±1.99 mm) only.
Selectable Analog Magnification
Each Maxum III unit is capable of selecting between two mini-
mum analog graduation values. An inch/metric overlay can be
used for traditional analog display preference. The Long Range
model can select between 0.001 and 0.0005 in (0.01 and
0.005 mm) resolutions. The Short Range model can select
between 0.001 and 0.0005 in (0.01 and 0.005 mm) resolutions
for the ±0.040 in / ±1.0 mm range and between 0.0005 and
0.0001 in (0.005 and 0.001 mm) resolutions for the ±0.0199 in
/ ±0.199 mm range
Sleep Mode
The Maxum III unit is designed with an auto power down fea-
ture to conserve battery life. If it senses approximately 10 min-
utes of inactivity (i.e. no spindle movement, no buttons pushed,
no Digimatic data output request), the unit will go into a Sleep
state. Display shows only a ‘+’ or ‘-’ sign depending on measur-
ing direction selected in setup. Unit is inactive.
OPTION: The Sleep Mode may be disabled as a factory option
when requested at time of order. However, when using bat-
tery power the life of the battery will be reduced. This option
is typically used with the Remote External Power option, which
bypasses battery operation.

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Maxuum III Digital Electronic Indicator 2239028 Rev D
Transducer Range
Maxum III Remote Indicating Units auto-sense the type of Digi-
tal Transducer plugged into it. There are two types of Digital
Transducers that are auto-sensed; Short Range versions, which
have a ±0.040 in / ±1.0 mm measuring range and Long Range
versions, which have a ±0.100 in / ±1.99 mm measuring range.
Digital Output
Each Maxum III unit is capable of selecting between three
choices of data output format; the Standard Maxum output
format, the Maxum Serial output format, and a Digimatic output
format.
Digital Calibration
The Maxum III indicator can be calibrated via pushbutton
sequencing for accurate performance.
Low Battery Signal
The text Bat is displayed on the digital display signifying that a
battery change is necessary which helps avoid collection of bad
data. It initially flashes as a warning then under continuous use
eventually remains on so that no readings will be displayed.
Calibration Lockout (Option)
Allows the entry into the calibration mode via an access key
(Order No. 2240545 - 6 pin, Order No. 2240547 -10 pin) when
plugged into the data output port. Calibration is inaccessible
without this Access Key. Specific models only.
Setup Lockout (Option)
Allows the entry into the setup mode via an Access Key (Order
No. 2240545 - 6 pin, Order No. 2240547 -10 pin) when
plugged into the data output port. Setup mode is inaccessible
without this Access Key. Specific models only.
Remote External Power (option)
allows use of remote power from an external regulated power
supply or data collector via the data output port. When
remotely powered, battery is bypassed and it is not used unless
remote source is inactive. Available on models that have a data
output port only. Never use an external power supply on mod-
els that do not have this special option feature.

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Maxuum III Digital Electronic Indicator 2239028 Rev D
External Power Supply:
6 pin model 2239090
10 pin model 2239091
CAUTION: DO NOT continuously toggle external power source
on and off as this can cause damage to the digital indicator
and the remote power source.
DO NOT remove or install the external power source cable
while the external source in on.
Ratio Model (Option)
There are two ratios available for the Maxum III indicator. All
standard models come with a 1:1 ratio meaning 0.010 inch
movement of the spindle results in 0.010inch reading on the
indicators digital display. Some applications require a 4:5 ratio.
Maxum III models ordered with this 4:5 ratio will read 0.008
inch on the indicators digital display when the spindle is moved
0.010inch in linear travel. There are no other ratios available on
this indicator. This is a factory set option.
2.1.1 Controls - Standard Mode
Makes use of 6 push button modes, (Left Limit, Left Display
Index, Right Display Index, Right Limit, Autozero) for selections
in two operating modes (Standard and Enhanced) and sepa-
rately for entering the Setup Mode and Calibration Mode. But-
tons are only active when a reading is on the display.
Figure 2 - Indicator shown in TSP Mode
True Spindle Position
Enters unit into its TSP Mode to show the actual position of the
spindle in the indicator's measuring range.
True Spindle
Position
Left Tolerance
Limit
Display Switches
Right Tolerance
Limit
Auto Zero

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Maxuum III Digital Electronic Indicator 2239028 Rev D
Left Tolerance Limit
Sets the left arrow at desired limit.
Display Switches
Indexes the digital readout and analog display clockwise (right-
handed switch) or counterclockwise (left-hand switch). The dis-
play switches will function only when the Indicator or Indicating
Unit is in the Auto-Zero (gaging) mode.
Right Tolerance
Sets the right arrow at desired limit.
RESET
To electronically set both the analog display and digital readout
to zero.
2.1.2 Controls - Enhanced Mode
Figure 3
MODE
Shows the real time static measurement of the spindle in the
indicator's measuring range while in Enhanced Mode (see Sec-
tion, ’4.2 Enhanced Mode’ on page 28). When the mode but-
ton is used to activate the Enhanced function the indicator's
analog display changes to the alternate mode, i.e. a normal Fan
display changes to a Single Element display, and dynamic but-
ton functions become active.
Mode
Min
TIR
Max
Reset
Hold

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Maxuum III Digital Electronic Indicator 2239028 Rev D
MIN
Activates the dynamic minimum value retention function. Dis-
plays the lowest or most negative measurement seen by the
indicated movement.
TIR
Activates the dynamic Total Indicated Reading Value retention
function. Displays the lowest and highest points on the analog
scale (if not exceeded) and the total reading of max minus min
(max - min) on the digital readout.
HOLD
Activates the Hold function, which freezes the displayed read-
ing at that moment in time. A second press of the button
releases the frozen reading and updates the display to the cur-
rent spindle position. This function can also be remotely trig-
gered via the output port on specific models - see Section ’8.0
Output Information’ on page 43.
MAX
Activates the Dynamic Maximum Value retention function. Dis-
plays the highest or most positive measurement seen by the
indicated movement.
RESET
Electronically sets both the analog display and digital readout to
zero when in the Enhanced Actual or TIR modes. Electronically
sets both the analog and digital readout to the current spindle
position location in the minimum or maximum modes. This
function can also be remotely triggered via the output port on
specific models (Section, ’8.0 Output Information’ on page 43).
3.0 Setup Mode
The Maxum III has six operator changeable features, which are
selectable in the indicators Setup Mode. These features are:
changing linear units between inch and millimeter, changing of
measuring direction polarity, selecting of two digital ranges (full
or reduced - short range models only), selecting the digital reso-
lution, how to select the analog scale magnification including
proper overlay usage, and selecting of data output format to be
used with an external device. The Maxum III uses the two
mushroom push-buttons to enter Setup Mode, make feature
selections, and exit Setup Mode. A quick reference sheet of but-

15
Maxuum III Digital Electronic Indicator 2239028 Rev D
ton operation for the Maxum III setup menu is provided at the
end of the manual ’9.0 Quick Step Flow Chart’ on page 55.
NOTE: For models with the Setup Mode Lockout Option this
mode is accessible with the Access Key:
Order No. 2240545 - 6-pin,
Order No. 2240547 -10-pin
when plugged into the data output port. Setup Mode is inac-
cessible without this Access Key.
3.1 Entering Setup Mode
Entering the Setup mode is accomplished by pressing and hold-
ing the HOLD button for three or more seconds until the display
shows SEt, indicating *Setup Mode. At the SEt screen, press and
release the RESET button to enter the selection menu of setup
features.
*NOTE: The Setup Mode can only be entered while the unit is
in both Standard Mode and then tsp (true spindle position)
mode. Refer to ’4.1 Operating the Maxum III’ on page 25.
Once in the Setup Mode simply press the corresponding button
to toggle through the features and choices. The RESET button
toggles through the setup menu items and the HOLD button
toggles through the indicated feature selections. The selection
displayed is the one that is saved when exiting the Setup Mode.
Figure 4 - Maxum III indicator in Setup Mode
3.1.1 Exiting Setup Mode
To exit Setup Mode press and hold the RESET button a mini-
mum of 3 seconds then release the button. The setup menu
item should disappear and the unit is back into its operating TSP
Mode. If the unit has not exited from the Setup mode, then
repeat this step again.

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Maxuum III Digital Electronic Indicator 2239028 Rev D
3.2 Changing inch / metric units
1. Enter setup mode.
2. Press the RESET button until the letter uindicates the
unit’s setup feature.
Figure 5 - Shown in Millimeter Units
3. Press the HOLD button to toggle between inch (in) and
metric (mm) units. Notice the in/mm icon indicates the
selected units on the LCD display.
Figure 6 - Shown in Inch Units
3.3 Changing Measuring Direction
1. Enter Setup Mode
2. Press the RESET button until the letter dshows in the
last digital position of the LCD display. The dindicates
the Direction Setup feature.

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Maxuum III Digital Electronic Indicator 2239028 Rev D
Figure 7 - Shown in Reverse Polarity Direction
3. Press the HOLD button to toggle between Normal (n)
and Reverse (r) direction. Notice the tolerance arrows
also indicate the direction change.
3.4 Changing Digital Range
1. Enter setup mode.
2. Press the RESET button until the letter rshows in the last
digital position of the LCD display. The rindicates the
digital Range Setup feature.
3. Press the HOLD button to toggle between standard
range and reduced range selections. Notice on the LCD
display that the digital readout will change from one
measuring range to another. Only Short Range Models
have this selection available.
Figure 8
For Long Range Models the choice is fixed at 100 in (1.99 mm).
For short range models the choices will be 0.040in and 0.020 in
- for the 0.0199" range (1.00 mm and 0.199 mm).

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Maxuum III Digital Electronic Indicator 2239028 Rev D
Figure 9
3.5 Changing Digital Resolution
1. Enter Setup Mode.
2. Press the RESET button until the letter rshows in the last
digital position of the LCD display. The rindicates the
digital Range setup feature.
3. Press the RESET button once to enter the Digital Resolu-
tion setup feature. Note that there is no half-digit icon
used for this setup feature.
Figure 10
4. Press the HOLD button to toggle between standard
digital resolution and high digital resolution selections.
Resolution selections are dependent on indicator model
and digital range selection (see, ‘Overlay Selection Table’
on page 20).

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Maxuum III Digital Electronic Indicator 2239028 Rev D
Figure 11
3.6 Selecting Analog Fan Scale/ Overlay
3.6.1 Setting-up the Indicator Analog Fan Scale
1. Enter Setup Mode
2. Press the RESET button until the letter Fshows in the last
digital position of the LCD display. The Findicates the
analog Fan display setup feature.
3. Press the HOLD button to toggle through the analog
graduation value selections.
Figure 12
Notice the fan display toggles between half full scale (only half
the LCD fan segments are on) and full scale (all the LCD fan
segments are on). This ?fan scale and full fan scale help the
operator in deciding which overlay to use.
The ?fan scale indicates that the 25-0-25 overlay should be
used. The full fan scale indicates that either the 5-0-5 or 50-0-
50 overlay should be used. See the following Section, ’3.6
Selecting Analog Fan Scale/ Overlay’ on page 19 and corre-
sponding to the ‘Overlay Selection Table’ on page 20 for correct
installation and choice when using the overlay option.

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Maxuum III Digital Electronic Indicator 2239028 Rev D
Figure 13
3.7 Installing and Removing the Overlay Scale
Once the pushbutton settings have been set, if desired, install
the corresponding overlay onto the front of the Maxum III per
table, Overlay Selection Table’ on page 20. The following is a
recommended procedure for installing and removing the over-
lay from the front of the Maxum III indicator.