Leica Geosystems DISTO WH15 Product manual

Technical Reference Manual V1.20
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725538.doc 08.11.01
DISTO
DISTODISTO
DISTOTM
TMTM
TM OEM module 3.0 WH15/WH30
OEM module 3.0 WH15/WH30OEM module 3.0 WH15/WH30
OEM module 3.0 WH15/WH30
Distance Reference
The DISTOTM OEM module 3.0 is a powerful, easy to integrate distance measuring module. Due to safety aspects
(e.g. laser safety, labeling, ...), system integration is limited to companies which are qualified to integrate such
modules into their own housing and/or complete system.
Therefore this module is not intended to be sold as a final product or for any purposes other than the above-
mentioned.
Type: DISTOTM OEM module 3.0 WH15
Art. No.: 724866
Type: DISTOTM OEM module 3.0 WH30
Art. No.: 563890
Leica Geosystems AG CH-9435 Heerbrugg
Laser beam outlet

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DISTODISTO
DISTOTM
TMTM
TM OEM module 3.0 WH15/WH30
OEM module 3.0 WH15/WH30OEM module 3.0 WH15/WH30
OEM module 3.0 WH15/WH30
Contents:
1. TECHNICAL DATA.............................................................................................................................................................3
2. PHYSICAL DIMENSIONS AND FIXING.............................................................................................................................4
3. INTERFACE PARAMETERS..............................................................................................................................................5
3.1. SOFTWARE PARAMETERS ...............................................................................................................................................5
3.2. PIN ASSIGNMENT OF THE D-SUB CONNECTOR ...................................................................................................................5
4. POWER ON /OFF ...............................................................................................................................................................6
5. SOFTWARE INTERFACE PROTOCOL .............................................................................................................................6
5.1. GENERAL DEFINITIONS ...................................................................................................................................................6
5.1.1. Characters .............................................................................................................................................................6
5.1.2. Entries....................................................................................................................................................................6
5.1.3. Replies ...................................................................................................................................................................6
5.2. DATA FORMAT ...............................................................................................................................................................6
5.3. WORD INDEXES (WI) .....................................................................................................................................................7
5.4. ERROR REPORTS...........................................................................................................................................................8
6. COMMANDS.......................................................................................................................................................................9
6.1. GENERAL .....................................................................................................................................................................9
6.2. SET OF COMMANDS........................................................................................................................................................9
6.2.1. RESET command (a).............................................................................................................................................9
6.2.2. OFF command (b)..................................................................................................................................................9
6.2.3. STOP/CLEAR command (c) ..................................................................................................................................9
6.2.4. Distance measurement (g).....................................................................................................................................9
6.2.5. Distance measurement (G)....................................................................................................................................9
6.2.6. Tracking (h)............................................................................................................................................................9
6.2.7. Tracking (H) .........................................................................................................................................................10
6.2.8. Signal measurement (k).......................................................................................................................................10
6.2.9. Temperature measurement (t) .............................................................................................................................10
6.2.10. Laser (o, p) .....................................................................................................................................................10
6.2.11. Software version (00) ......................................................................................................................................10
6.2.12. Hardware version (01) .....................................................................................................................................10
6.2.13. Serial number (02)...........................................................................................................................................10
6.2.14. Date of manufacture (03).................................................................................................................................10
6.2.15. Setting distance offset (44)..............................................................................................................................10
6.2.16. Setting baud rate (70)......................................................................................................................................11
7. MEASURING ACCURACY ...............................................................................................................................................11
8. ACCESSORIES ................................................................................................................................................................11
9. VALIDITY..........................................................................................................................................................................12

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TM OEM module 3.0 WH15/WH30
OEM module 3.0 WH15/WH30OEM module 3.0 WH15/WH30
OEM module 3.0 WH15/WH30
1. Technical data
Typical measuring accuracy for WH15 1)
Typical measuring accuracy for WH30 1)
+/- 1.5 mm
+/- 3 mm
Maximum measuring accuracy for WH15 1)
Maximum measuring accuracy for WH30 1)
+/- 2 mm
+/- 5 mm
Smallest unit displayed 0.1 mm
Measuring range on natural surfaces 0.3 to 30 m
Measuring range on brown (reflecting) target plate ca. 20 to 100 m
Unambiguous display 0 to 300 m
Measuring reference from front edge (See 2 Physical dimensions
and fixing on page 4)
Diameter of laser spot at target at a distance of: 10 m Î6 mm
50 mÎ30 mm
100 mÎ60 mm
Time for a measurement: Single measurement
Tracking
0.6 to ca. 5 sec
0.15 to 5sec
Vibration 10 to 50 Hz, +/- 0.15 mm, 5 cycles
1 octave / min (at maximum and minimum
operating temperature)
ISO 9022-36-05
Bump (Shock) 25 g, 6 ms,
4000 shocks each axis and direction
ISO 9022-31-06
Drop 500g single shock once, on all surfaces
Light source Laserdiode 620-690 nm (red)
IEC 60825-1:1993; Class 2
FDA 21CFR Ch.Ι§1040: 1988; Class ΙΙ
Beam divergence:0.16 x 0.6 mrad
Pulse duration: 15x10-9 s
Maximum radiant power: 0.95 mW
Maximum radiant power per pulse: 8mW
Measurement uncertainty: ±5%
ESD (Without cables) (IEC 61000-4-2 (1995-01) Level 1)
2kV tested on metal body
EMC (Without cables) IEC 61000-4-3 (1995-02)
EN55022 Klasse B 1994
FCC Part 15 Class B
Power supply DC 9V … 30V
ON
OFF
max. 250mA
27mA @ 10V
Dimensions 140 x 70 x 55 mm
Temperature range Operation
Storage
-10 °C to +50 °C 2)
-40 °C to +70 °C
Degree of Protection IP65; IEC60529 (protected against ingress
of dust and water
Weight 430 g
Interface Serial asynchronous interface
(RS232 and RS422)
1) See 7 Measuring accuracy on page 11
2) In case of permanent measurement (tracking mode) the max. temperature is reduced to 45°C

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OEM module 3.0 WH15/WH30OEM module 3.0 WH15/WH30
OEM module 3.0 WH15/WH30
2. Physical dimensions and fixing
When fixing the Module you have to be careful not to point the instrument directly toward
the sun. The telescope functions as a magnifying lens and such exposure can damage
the distance measuring device.
You have to ensure, that the optics are kept free from dust, dirt and water.
Clean and Dry:
•Blow away dust from lenses.
•Do not touch the optics with fingers.
•Only clean with a soft cloth; if necessary, dampen with pure alcohol. Do not use other
cleaning agents. Plastic parts could be affected.
Please note the laser beam is not parallel to the housing or to the fixing points.

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3. Interface parameters
3.1. Software parameters
The interface of the DISTOTM OEM module 3.0 has been arranged so that it can be connected to a PC by means
of an adapter. The parameters of the interface are defined ex-works as follows:
9600 baud, none parity, 8 data bits, 1 stop bit
These settings can be changed, using the interface commands.
3.2. Pin assignment of the D-sub connector
The 15 pin D-sub connector contains the lines for RS232, RS422 and the power.
1
2
5
4
3
8
7
6
11
10
9
14
13
12
15
VCC
RX
TX
-RI
+DO
-DO
9..30VDC
+RI
GND
RS232
RS422
ON/OFF
Pin Designator Description Colors for accessories cable
725005 (RS422) 725006 (RS232)
1 RS232 Tx RS232 Send line White
2 RS232 Rx RS232 Receive line Brown
3 -DO RS422 Send line negative White
4 +DO RS422 Send line positive Brown
5 -RO RS422 Receive line negative Green
6 +RO RS422 Receive line positive Yellow
7 BAT + Power DC +9V…+30V Brown (Supply cable)
8 BAT + Power DC +9V…+30V
9NC
10 NC
11 NC
12 NC
13 ON / OFF ON: Open OFF: switch to ground Green (Supply cable)
14 GND Ground line Grey Green
15 GND Ground line White (Supply cable)

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4. Power on /off
•Pin 13 of the D-sub Connector is Open (Tristate):
To switch the module on, use command “a” (See 6.2.1 RESET command (a) on page 9).
To switch the module off, use the command “b” (See 6.2.2 OFF command (b) on page 9). After this
command, the measurement module is switched off, but the electronic interface is still active and waits for the
next command on the serial interface.
•Pin 13 of the D-sub Connector is switched to ground:
The module and the interface board are switched off. All commands are ignored.
5. Software interface protocol
5.1. General definitions
5.1.1. Characters
All characters with ASCII codes below 127 can be used for entering commands. A command is concluded by
means of an ASCII code below 32 (last character or terminator <trm>).
The DISTOTM OEM module 3.0 also transmits a terminator to conclude a reply. The terminator transmitted is
<cr><lf>.
5.1.2. Entries
Each DISTO OEM module 02 command consists of one or more letters and a terminator.
Examples:
a<trm>
N00N<trm>
Numerical entries (command parameters, %) are always entered as whole numbers and the following format is
permitted:
Sign (optional) and digits which do not commence with zero: -8007.
5.1.3. Replies
DISTOTM OEM module 3.0 transmits one or more replies to each command received. These are the possible
replies:
?<trm> - OK prompt: Everything ok, DISTOTM OEM module 3.0 is ready to execute
a new command
@E123<trm> - Error report: A three-digit error code is transmitted in accordance with the
table in the appendix.
12..10+12345678 <trm> - One or more data words with terminator.
Plain text - Plain-text data
A command will result in at least an OK prompt or an error report.
5.2. Data format
A data word as reply consists of 16 characters, combined as follows:

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OEM module 3.0 WH15/WH30
12345678910111213141516
WW....+12345678
Position Description: Remark
1,2 Word index 00-99 With zeroes at start
3,4 no significance In service mode as expansion of word index
5 Attribute 0: Measured value
1: Manually-entered value
6 Units 0: mm
. : No units
7-15 Decimal value With sign and zeroes at start
16 Space
In some instances the following data format appears:
12345678910111213141516
WW....+1234+678
Position Description: Remark
1,2 Word index 00-99 With zeroes at start
3,4 no significance In service mode as expansion of word index
5 Attribute 0: Measured value
1: Manually-entered value
. : No attribute set
6 Units 0: mm
. : No units
7-11 Decimal value 1 With sign and zeroes at start
12-15 Decimal value 2 With sign and zeroes at start
16 Space
5.3. Word indexes (WI)
The following WIs are available to the user:
WI no. Format (example) Meaning Rem.
12 12....+xxxxxxxx Serial number of module
[0....99999999]
13 13....+xxxxyyyy Software version
xxxx: Identification
yyyy: SW-Version 0100 -> V1.00
14 14....+xxxxxxyy Hardware version
xxxxxx: Board number
yy: Revision index
15 15....+xxxxxxxx Date of manufacture [YYYYMMDD] Year, Month, Day
31 31..06+xxxxxxxx Slope distance [1/10 mm]
40 40....+xxxxxxxx Temperature [1/10 º C]
51 51....+xxxxxxxx Always 0 (only for compatibility reasons)
53 53....+xxxxxxxx Measurement signal [mV]
58 58..16+xxxxxxxx Distance offset [1/10 mm]

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5.4. Error reports
No. Format Meaning
203 @E203 Prohibited parameter in command entry, or prohibited command, or non-valid
result
217 @E217 Parameter set-up incorrect (Contact Leica Geosystems)
221 @E221 Parity error (Prior to contacting Leica Geosystems please check the Terminal
settings)
222 @E222
Interface buffer overflow
(Contact Leica Geosystems if error occurs when sending less than 24
characters)
223 @E223 Interface framing error
(Contact Leica Geosystems)
224 @E224
GSI buffer overflow
(Contact Leica Geosystems if error occurs when sending less than 24
characters)
252 @E252 Temperature too high
(contact Leica Geosystems if error occurs at room temperature)
253 @E253 Temperature too low
(contact Leica Geosystems if error occurs at room temperature)
255 @E255
Received signal too weak, distance < 250mm
(Use different target and distances, if the problem persists, please contact Leica
Geosystems)
256 @E256
Received signal too strong
(Use different target and distances, if the problem persists, please contact Leica
Geosystems)
257 @E257
Too much background light
(Use different target and distances, if the problem persists, please contact Leica
Geosystems)
272
to
299
@E272 Hardware failure (Contact Leica Geosystems)
Before contacting Leica Geosystems please collect as much information as possible.

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6. Commands
6.1. General
After a command has been entered, it is decoded and processed. If additional commands are sent, processing of
the current command will be aborted if possible and the last command to be received will be processed. After the
command has been executed, there will always be either an OK prompt or an error report.
6.2. Set of commands
6.2.1. RESET command (a)
Function: Resets the module.
GSI IN: a<trm>
GSI OUT: ?<trm> or @Exxx<trm>
6.2.2. OFF command (b)
Function: Switches the module off. It is very important to switch the module off, before disconnecting the
power. To switch the module on, use pin 2 at connector J1
(See 3.2 Pin assignment on page 5).
GSI IN: b<trm>
GSI OUT: ?<trm> or @Exxx<trm>
6.2.3. STOP/CLEAR command (c)
Function: Stops the current execution.
GSI IN: c<trm>
GSI OUT: ?<trm> or @Exxx<trm>
6.2.4. Distance measurement (g)
Function: Triggers simple measurement of distance. Each new command cancels an active
measurement.
GSI IN: g<trm>
GSI OUT: WI31 WI51<trm> or @Exxx<trm>
6.2.5. Distance measurement (G)
Function: Triggers configurable measurement of distance.
(not implemented in the current SW version, react like the command g)
GSI IN: G<trm>
GSI OUT: WI31<trm> or @Exxx<trm>
6.2.6. Tracking (h)
Function: Triggers continuous measurement of distance. The measurements are continued until the next
command is issued or until a fault arises.
GSI IN: h<trm>
GSI OUT: WI31 WI51<trm> or @Exxx<trm>

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6.2.7. Tracking (H)
Function: Triggers continuous measurement of distance. The measurements are continued until the next
command is issued or until a fault arises.
GSI IN: H<trm>
GSI OUT: WI31<trm> or @Exxx<trm>
6.2.8. Signal measurement (k)
Function: Triggers continuous measurement of the signal. The measurements are continued until the
next command is received or until a fault arises.
GSI IN: k<trm>
GSI OUT: WI53<trm> or @Exxx<trm>
6.2.9. Temperature measurement (t)
Function: : Triggers measurement of temperature.
GSI IN: t<trm>
GSI OUT: WI40<trm> or @Exxx<trm>
6.2.10. Laser (o, p)
Function: Switches laser on or off.
GSI IN: o<trm> Switches laser on
p<trm> Switches laser off
GSI OUT: ?<trm> or @Exxx<trm>
6.2.11. Software version (00)
Function: Outputs software version at interface.
GSI IN: N00N<trm>
GSI OUT: WI13<trm> or @Exxx<trm>
6.2.12. Hardware version (01)
Function: Outputs instrument type at interface.
GSI IN: N01N<trm>
GSI OUT: WI14<trm> or @Exxx<trm>
6.2.13. Serial number (02)
Function: Outputs serial number at interface.
GSI IN: N02N<trm>
GSI OUT: WI12<trm> or @Exxx<trm>
6.2.14. Date of manufacture (03)
Function: Date of manufacture at interface.
GSI IN: N03N<trm>
GSI OUT: WI15<trm> or @Exxx<trm>
6.2.15. Setting distance offset (44)
Function: Sets distance offset. The offset is added to each distance measured. Setting is nonvolatile!
GSI IN: N44N%N<trm>
%: Distance offset [1/10mm] within the range ±29.999m
GSI OUT: WI58<trm> or @Exxx<trm>

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95.4%
-3s
99.7%
-s s 3s
x
-2s 2s
68.27%
6.2.16. Setting baud rate (70)
Function: Sets the baud rate with fixed parity (none parity).
GSI IN: N70N%N<trm>
% Baud rate % Baud rate
3 1200 6 9600
4 2400 7 19200
5 4800
GSI OUT: ?<trm> or @Exxx<trm>
7. Measuring accuracy
The measuring accuracy corresponds to the ISO-recommendation ISO/R 1938-
1971 with a statistical confidence level of 95% (i.e. ±twice the standard deviation,
refer to diagram below). The typical measuring accuracy relates to average
conditions for measuring. It is valid in the tracking mode.
The maximum measuring error relates to unfavorable conditions such as:
- highly-reflecting surfaces (e.g. reflector tapes)
- operating at the limits of the permitted temperature range, adaptation to ambient
temperature interrupted
-very bright ambient conditions, strong heat shimmer
and can be up to ±2 mm for WH15 and ±5 mm for WH30 (twice standard
deviation).
During the measuring time the distance will be averaged. This applies when measuring to
moving targets.
8. Accessories
Interface Cable (725706)
IP65 protected cable for RS232 Interface and power supply (15 pin D-sub to 9 pin D-sub female connector and
separate Power Supply). For colors and assignment refer to table under 3.2 Pin assignment of the D-sub
connector.
Length 3m
Interface Cable (725705)
IP65 protected cable for RS422 Interface and power supply (15 pin D-sub to RS422 and separate Power Supply).
For colors and assignment refer to table under 3.2 Pin assignment of the D-sub connector.
Length 3m
Software (Disto Online)
Is continuously updated. Ask your module dealer or visit the DISTO web site at http://www.disto.com

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9. Validity
This document is valid for the DISTOTM OEM module 3.0. The following firmware versions support the listed
commands:
Identification: 0000 (0000)
Version: V2.00 (0200)
Version: V2.20 (0220)
Version: V3.20 (0320)
To get this information refer to 6.2.11 Software version (00) on Page 10.
725538-1.2.0en
Printed in Switzerland
Copyright Leica Geosystems AG, Heerbrugg, Switzerland 2001
Leica Geosystems AG
DISTO
CH-9435 Heerbrugg
(Switzerland)
Phone ++41 71 727 31 31
Fax ++41 71 727 46 73
www.leica-geosystems.com