Sanding STS-752RC User manual

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CONTENTS
FOREWORDS.........................................................................................................4
1. IMPORTANT PARTS AND FUNCTIONS...........................................................7
1.1 IMPORTANT PARTS.........................................................................................7
1.2 DISPLAY............................................................................................................8
1.3 KEYPAD ............................................................................................................8
1.4 FIXED KEYS......................................................................................................9
1.5 TRIGGER KEY..................................................................................................9
1.6 SOFT KEYS.......................................................................................................9
1.7 SYMBOLS .......................................................................................................10
1.8 MENU TREE....................................................................................................11
2. PREPARATION FOR MEASUREMENT..........................................................12
2.1 UNPACKING AND STORE OF INSTRUMENT ..............................................12
2.2 INSTRUMENT SETUP....................................................................................12
2.3 BATTERY POWER REMAINING DISPLAY....................................................14
2.4 REFLECTOR PRISMS....................................................................................15
2.5 MOUNTING AND DISMOUNTING INSTRUMENT FROM TRIBRACH..........16
2.6 EYEPIECE ADJUSTMENT AND COLLIMATING OBJECT............................16
2.7 INPUTTING MODE..........................................................................................16
2.8 POINTSEARCH...............................................................................................17
2.9 WILDCARD SEARCH......................................................................................19
3. ROUTINE MEASUREMENT.............................................................................20
3.1 DISTANCE SURVEY CAUTIONS...................................................................20
3.2 EDM SETTINGS..............................................................................................20
3.3 START SURVEY.............................................................................................25
4. FUNCTIONS......................................................................................................31
4.1 LEVELING .......................................................................................................31
4.2 TARGET OFFSET...........................................................................................31

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4.3 DELETING LAST RECORD............................................................................32
4.4 MAIN SETTINGS.............................................................................................33
4.5 HEIGHT TRANSFER.......................................................................................35
4.6 HIDDEN POINT MEASUREMENT..................................................................38
4.7 FREE-CODING................................................................................................39
4.8 CHECKING TIE...............................................................................................39
4.9 EDM TRACKING.............................................................................................40
4.10 LIGHT ON/OFF..............................................................................................41
4.11 LASER POINTER ON....................................................................................41
4.12 RETICLE ILLUMINATION ON/OFF...............................................................41
5. PROGRAMS .....................................................................................................42
5.1 SETTING JOB .................................................................................................42
5.2 SETTING STATION.........................................................................................43
5.3 SETTING ORIENTATION ...............................................................................44
5.4 SURVEYING....................................................................................................48
5.5 STAKING OUT ................................................................................................49
5.6 FREE STATION...............................................................................................57
5.7 COGO..............................................................................................................60
5.8 TIE DISTANCE................................................................................................70
5.9 AREA MEASUREMENT (PLANE)...................................................................73
5.10 REMOTE HEIGHT MEASUREMENT (REM)................................................75
5.11 REFERENCE LINE / ARC.............................................................................77
5.12 ROAD ............................................................................................................92
5.13 CONSTRUCTION SITE STAKE OUT .........................................................105
6. FILE MANAGEMENT .....................................................................................110
6.1 JOB................................................................................................................110
6.2 KNOWN POINT.............................................................................................114
6.3 MEASUREMENT DATA................................................................................117
6.4 CODING ........................................................................................................120
6.5 INITIALIZING INTERNAL MEMORY.............................................................121

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6.6 MEMORY STATISTIC...................................................................................122
6.7 U DISK MODE...............................................................................................122
6.8 DATA OUTPUT/DATA IMPORT....................................................................124
6.9 USB SEND DATA/USB RECEIVE ................................................................125
7. COMMUNICATION SETTING........................................................................128
8. DATA TRANSFER..........................................................................................129
9. SYSTEM INFORMATION...............................................................................130
10. CHECK AND ADJUSTMENT.......................................................................131
10.1 PLATE VIAL.................................................................................................131
10.2 CIRCULAR VIAL..........................................................................................131
10.3 INCLINATION OF RETICLE........................................................................132
10.4 PERPENDICULARITY BETWEEN SIGHT AXIS AND HORIZONTAL AXIS (2C) ....132
10.5 VERTICAL INDEX DIFFERENCE COMPENSATION.................................134
10.6 VERTICAL INDEX DIFFERENCE (I ANGLE) & SETTING VERTICAL INDEX 0 .....135
10.7 TRANSVERSE AXIS ERROR COMPENSATION ADJUSTMENT .............136
10.8 OPTICAL PLUMMET...................................................................................137
10.9 INSTRUMENT CONSTANT (K) ..................................................................138
10.10 PARALLEL BETWEEN LINE OF SIGHT AND EMITTING PHOTOELECTRIC AXIS ...........140
10.11 REFLECTORLESS EDM...........................................................................140
10.12 TRIBRACH LEVELING SCREW ...............................................................141
10.13 RELATED PARTS FOR REFLECTOR......................................................141
11. SPECIFICATION...........................................................................................142
12. ACCESSORIES ............................................................................................144
[APPENDIX-A] CALCULATING ROAD ALIGNMENT......................................145
1. ROAD ALIGNMENT ELEMENTS ................................................................145
2. CALCULATION ROAD ALIGNMENT ELEMENTS......................................146

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FOREWORDS
Congratulations on the purchase of the SANDING Total Station STS-750RC
Series.
This manual is for the application of SANDING Total Station STS-750RC
Series.
Total Station STS-750RC is equipped with visible infrared laser EDM which can
measure the distance without sighting a reflector.
Before operating the instrument, please read this manual carefully.
FEATURES:
Powerful Software Functions
The internal software installed in Total Station STS-750RC Series is precisely
designed. It boasts of compact menu structure and complete and practical
application programs, which proves efficient and helpful in the process of project
measurement and stake-out.
Simplified Operation
Total Station STS-750RC Series has various functional keys, coupled with an input
mode combining characters and numbers perfectly. It’s simple, practical, and
convenient in use, which enables the engineers who don’t even have too much
surveying experience to master the operation quickly.
Absolute Encoding Disk
The pre-assembled Absolute Encoding Disk enables the user to start measurement
directly after switching on the instrument. Even if the user changes the battery during
operation, the azimuth data will not be deleted.
Reflectorless EDM
The reflectorless laser EDM function equipped in Total Station STS-750RC Series
can be operated the measurement on various materials of different colors (such as
the wall surface of building, telegraph pole, wire, cliff, hill and mountain, earth and soil,
stump) from long distance with high precision. It brings great convenience to
surveyors when measuring a target that is hard or even impossible to reach.
SD card and miniUSB data transfer
With SD card and miniUSB cable, Total Station STS-750RC provides users an
enlarged storage and a more convenient data transfer with comparison to previous
COM port.
High Precision and Long Measuring Range
The measuring range of Total Station STS-750RC Series is 5.0km with single prism.
And the reflectorless range of STS-750RC Series can reach up to 350m.
Reliable Water Dust Proof Function
Total Station STS-750RC Series boasts of water and dust proof function, which
realizes a breakthrough in terms of the hardware performance of total station.

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PRECAUTIONS
1. Do not collimate the objective lens directly to the sun without a filter.
2. Do not store the instrument in high and low temperature to avoid the sudden
or great change of temperature.
3. When the instrument is not in use, place it in the case and avoid shock, dust
and humidity.
4. If the temperature in the work site is greatly different from that in the store
place, before operation you should leave the instrument in the case with the
cover opened until the temperature of the instrument get similar to the
surrounding temperature.
5. If the instrument will not be used for a long time, you should remove the
battery. And the battery should be recharged once a month.
6. During transportation, the instrument should be placed in the carrying case, it
is recommended that cushioned material should be used around the case for
support.
7. To meet the requirement of less vibration and better accuracy, the instrument
should be mounted on a wooden tripod rather than an aluminum tripod.
8. Clean exposed optical parts with degreased cotton or lens tissue only!
9. Clean the instrument surface with a woolen cloth. If it gets wet, dry it
immediately.
10. Before working, check the power, functions and indications of the instrument
as well as its initial settings and correction parameters.
11. Unless the user is a maintenance specialist, do not attempt to disassemble
the instrument by yourself even if you find the instrument abnormal.
12. Do not sight the eyes when Total Station STS-750RC Series is in work and
emits visible laser.
SAFETY GUIDE
Internal EDM (Visible Laser)
Warning:
The total station is equipped with an EDM of a laser grade of 3R/Ⅲa. It is verified
by the following labels.
On the vertical tangent screw sticks an indication label “CLASS III LASER
PRODUCT”. Another same label is on the opposite side.
This product is classified as Class 3R laser product, which accords to the
following standards.
IEC60825-1:2001 “SAFETY OF LASER PRODUCTS”.
Class 3R/Ⅲa laser product: It is harmful to observe the laser beam continuously.
User should avoid sighting the laser at the eyes. It can reach 5 times the emitting
limit of Class2/II with a wavelength of 400mm-700mm.

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Warning:
Continuously looking straight at the laser beam is harmful.
Prevention:
Do not stare at the laser beam, or point the laser beam to others’ eyes. Reflected
laser beam is a valid measurement to the instrument.
Warning:
When the laser beam emits on prism, mirror, metal surface, window, etc., it is
dangerous to look straight at the reflex.
Prevention:
Do not stare at the object which reflects the laser beam. When the laser is switched
on (under EDM mode), do not look at it on the optical path or near the prism. It is only
allowed to observe the prism with the telescope of the total station.
Warning:
Improper operation on laser instrument of Class 3R will bring dangers.
Prevention:
To avoid to be harmed, each user is required to take safety precautions, and take
everything under control within the distance that would incur dangers (according to
IEC60825-1:2001).
The following shows the explanation related to the key sections of the
Standard.
Laser instrument of Class 3R is applicable outdoors and in construction field
(measurement, defining lines, leveling).
a) Only specialists who are trained related course and authenticated are allowed to
install, adjust, and operate this kind of laser instrument.
b) Stand related warning symbols in the scale of use.
c) Prevent any person to look straight at or use optical instrument to observe the
laser beam.
d) To prevent the harm caused by laser, block the laser beam at the end of the
working route. When the laser beam exceeds the limit area (harmful distance*) and
when there are motivating persons, stopping the laser beam is a must.
e) The optical path of the laser should be set higher or lower than the line of sight.
f) When the instrument is not in use, take care of it properly. The person who is not
authenticated is not allowed to use.
g) Prevent the laser beam from irradiating plane mirror, metal surface, window, etc.,
especially beware of the surface of plane mirror and concave mirror.
* Harmful distance means the maximum distance between the start point and the point which the laser is
weakened to a degree that isn’t harmful.
The internal EDM instrument equipped with a Class 3R/III a Laser has a harmful distance of 1000m
(3300ft). Beyond this distance, the laser intensity is weakened to Class I (Looking straight at the laser
beam causes no harm to the eyes.)

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1. IMPORTANT PARTS AND FUNCTIONS
1.1 IMPORTANT PARTS
1) objective lens
9) keyboard
2) center mark
10) tribrach lock
3) eyepiece
11) laser plummet (optical plummet)
4) telescope focusing knob
12) leveling screw
5) collimator
13) plate vial
6) Ni-H rechargeable battery
14) vertical tangent screw
7) horizontal tangent screw
15) SD card and USB port
8) display
16) tribrach
17) circular vial
1
2
5
4
6
3
7
8
9
11
12
17
15
10
13
16
9
14

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1.2 DISPLAY
【Measure】
1/4
PtID
:
A1
R.HT
:
1.000 m
HZ
:
0°00’00”
V
:
90°00’00”
Ⅰ
:
----.---- m
Mem.
:
----.---- m
ALL
DIST
RECORD
↓
1.3 KEYPAD
1) Focus
Actively measured field.
2) Symbols
3) Fixed keys
Keys with firmly assigned functions.
4) Alphanumeric keys
STS-750RC
SD20125
Version：12.09.17
1
5
2
3
4
3
3
6
7

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5) Navigation keys
Control of input bar in edit and input mode or control of focus bar.
6) Soft key bar
Displays functions that can be called up by the soft keys.
7) Function keys
Are assigned the various functions displayed on the bottom of the screen.
1.4 FIXED KEYS
[User]: User key can be defined. It can be defined from the “Function” menu.
[FNC]: Quick access to measurement-supporting functions.
[Menu]: Menu key, to access to Programs, Settings, EDM Settings, File
Management, Adjustment, Comm Parameters, Data Transfer, System
Information.
[PAGE]: Page key. Turn to next page if several pages are available.
[ESC]: Quit a dialog or the edit mode without saving the changes. Return to an
upper menu.
[ENT]: Confirm an input, and continue to the next input field.
1.5 TRIGGER KEY
The measurement trigger key has three settings (All, DIST, OFF), which can be
defined in Settings.
1.6 SOFT KEYS
【Measure】
1/4
PtID
:
A1
R.HT
:
0.000m
HZ
:
0°00’00”
V
:
90°00’00”
Ⅰ
:
----.----m
Mem.
:
----.----m
ALL
Set Hz
ALL
DIST
TILT
CODE
RECORD
BEEP
EDM
↓
│←
↓
SetStn
EDM
↓
The measurement data is displayed in the several upper lines of the display,
while a selection of commands and functions are at the bottom of the screen,
which can be chosen by pressing corresponding function keys from F1 to F4.

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Soft Keys:
Key
Function
[All]
Starts angle and distance measurements, and saves the
measured values.
[DIST]
Starts angle and distance measurements without saving
the measured values.
[RECORD]
Saves displayed values.
[ENH]
Opens the coordinates input mode.
[LIST]
Displays the list of existed points.
[SEARCH]
Searches for the point entered.
[EDM]
Enters to EDM settings.
[ESC]
Returns to the previous screen.
[│←]
Returns to the highest soft key level.
[ ↓ ]
Turns to next soft key level.
[ENT]
Sets displayed message or dialog and quits dialog.
1.7 SYMBOLS
Symbol indicates a particular operating status depending on different software
versions.
Key
Meaning
A double arrow indicates choice fields.
Using the navigation keys the desired parameter can
be selected.
Quits a selection with the enter key or navigation keys.
, ,
Indicates that several pages are available which can be
selected with [PAGE].
Ⅰ,Ⅱ
Telescope position is on Face Ⅰor Face Ⅱ.
,
Hz is set to “left angle measurement”(or right angle
measurement), that is to anticlockwise (clockwise).
, ,
IR EDM mode/reflectorless EDM mode/reflecting sheet
measurement mode.
Shows the remaining battery capacity.
,
The compensator is on/off.
01, AB
Numeric mode/alphanumeric mode.
Mem.
COM.
The measuring data recorded in the internal memory or
via com port to data collector.

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1.8 MENU TREE
[Menu]>F1-F4: Confirms the selected menu. Press [PAGE] to view the next
page.

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2. PREPARATION FOR MEASUREMENT
2.1 UNPACKING AND STORE OF INSTRUMENT
·Unpacking
Place the case lightly with the cover upward, and unlock the case, take out the
instrument.
·Storing the Instrument
Cover the telescope cap, place the instrument into the case with the vertical
clamp screw and circular vial upwards (Objective lens towards tribrach), and
slightly tighten the vertical clamp screw and lock the case.
2.2 INSTRUMENT SETUP
Mount the instrument to the tripod. Level and center the instrument precisely to
ensure the best performance.
Operation Reference:
a. Level and center the instrument by plumb bob.
1) Set up the tripod
①First, extend the legs of the tripod to a suitable length, make the tripod head
approximately parallel to the ground and tighten the screws.
②Make the centre of the tripod and the occupied point approximately on the
same plumb line.
③Step on the tripod to make sure if it is well stationed on the ground.
2) Mount the instrument on the tripod.
Put the instrument carefully on the tripod head and level the instrument by
loosening the tripod screw. If the plumb bob is positioned right over the center of
the point, slightly tighten the tripod.
3) Roughly level the instrument by adjusting the circular vial.
①Turn the leveling screw Aand B to move the bubble in the circular vial, in which
case the bubble is located on a line perpendicular to a line running through the
centers of the two leveling screw being adjusted .
②Turn the leveling screw C to move the bubble to the center of the circular vial.

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4) Precisely leveling by using the plate vial
①Rotate the instrument horizontally by loosening the Horizontal Clamp Screw
and place the plate vial parallel to the line connecting leveling screw A and B,
and then bring the bubble to the center of the plate vial by turning the leveling
screws A and B.
②Rotate the instrument 90º(100g) around its vertical axis and turn the remaining
leveling screw or leveling C to center the bubble once more.
③Repeat the steps ①② for each 90º(100g) rotation of the instrument and
check whether the bubble is correctly centered in all directions.
b. Center by using the optical plummet
1) Set tripod
Lift tripod to suitable height, ensure equal length of three legs, spread and make
tripod head parallel to the ground, and place it right above the measurement
station point. Prop up tripod on the ground and fix one leg.
2) Install instrument and collimate the point
Set instrument carefully on tripod, tighten the central connecting screw and
adjust optical plummet to make the reticle distinctly. Hold the other two unfixed
legs with both hands and adjust position of these two legs through observation of
optical plummet. As it approximately aims at the station point, make all three
legs fixed on the ground. Adjust three leg screws of the instrument to make
optical plummet collimate precisely to the station point.

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3) Use circular vial to roughly level the instrument.
Adjust length of three legs of tripod, make the circular vial bubble of the
instrument in the middle.
4) Use plate vial to level the instrument accurately.
①Rotate the instrument horizontally by loosening the Horizontal Clamp Screw
and place the plate vial parallel to the line connecting leveling screw A and B,
and then bring the bubble to the center of the plate vial by turning the leveling
screws A and B.
②Rotate the instrument 90°, make it perpendicular to the connecting line of level
screws A and B. Turn level screw C to make the bubble of the plate vial in the
middle.
5) Precisely centering and leveling
Through observation of optical plummet, slightly loosen the central connecting
screw and move the instrument evenly (Don’t rotate the instrument), making the
instrument precisely collimating to the station point. Then tighten the central
connecting screw and level the instrument precisely again.
Repeat this operation till the instrument collimate precisely to the measurement
station point.
2.3 BATTERY POWER REMAINING DISPLAY
Battery power remaining display indicates the power capacity.
【Measure】
1/4
PtID
:
A1
R.HT
:
0.000 m
HZ
:
0°00’00”
V
:
90°00’00”
Ⅰ
:
----.---- m
Mem.
:
----.---- m
All
DIST
RECORD
↓
Note:
①The battery operating time will vary depending on the environmental conditions
such as ambient temperature, charging time, the number of times of charging and
discharging, etc. It is recommended for safety to charge the battery beforehand or
to prepare spare fully-charged batteries.
②The battery power remaining display shows the power level regarding the current
measurement mode. Distance measurement consumes more power than angle
measurement. Pay particular attention to this when switching angle measurement
mode to distance measurement mode, because insufficient battery power might
force the operation interrupted.
Before outdoor operation, battery power status should be checked in advance.
Power Capacity

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③When the measurement mode is changed, the battery power would not
immediately show the actual status. The battery power indicating system shows
the general status but not the instantaneous change of battery power.
Battery Recharging Cautions:
☆Battery should be recharged only with the original charger.
☆Remove the on-board battery from instrument and connect it to battery charger.
When the indicator lamp on the battery charger is flashing in red, the charging is
in progress. When charging is complete (indicator lamp turns green), disconnect
the charger from its power source.
☆The charger has built-in circuitry for protection from overcharging. However, do
not leave the charger plugged into the power outlet after recharging is completed.
☆Be sure to recharge the battery at a temperature from 0°to ±45°C. Recharging
may be abnormal beyond the specified temperature range .
☆When the indicator lamp does not flash after connecting the battery and charger,
either the battery or the charger might be damaged. Please contact specialists for
repairing.
☆Rechargeable battery can be repeatedly recharged 300 to 500 times. Complete
discharge of the battery may shorten its service life.
☆In order to get the maximum service life, be sure to recharge it at least once a
month.
Battery Removal Cautions ：
☆Before removing the battery from the instrument, make sure that the power is
turned off. Otherwise, the instrument may be damaged.
2.4 REFLECTOR PRISMS
When measuring distance, a reflecting system needs to be placed at the target
place. A reflector system consists with single prism or triple prisms, which can be
mounted on a tribrach or a prism pole. Reflector system can be self-configured
by users according to the work requirement.

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2.5 MOUNTING AND DISMOUNTING INSTRUMENT FROM TRIBRACH
Dismounting
If necessary, the instrument (including reflector prisms with the same tribrach)
can be dismounted from tribrach. Loosen the tribrach locking screw in the locking
knob with a screwdriver. Turn the locking knob about 180°counter-clockwise to
disengage anchor jaws, and take off the instrument from the tribrach.
Mounting
Insert three anchor jaws into holes in tribrach and line up the directing stub with
the directing slot. Turn the locking knob about 180°clockwise and tighten the
locking screw with a screw driver.
2.6 EYEPIECE ADJUSTMENT AND COLLIMATING OBJECT
Method of Collimating Object
①Sight the telescope to bright place and rotate the eyepiece tube until you can
see the reticle clearly.
②Collimate the target point with top of the triangle mark in the rough collimator.
(Keep a certain distance between eye and the collimator).
③Make the target image clear with the telescope focusing screw.
If there is parallax when your eye moves up, down or left, right, it means the
diopter of eyepiece lens or focus is not well adjusted and accuracy will be
influenced, so you should adjust the eyepiece tube carefully to eliminate the
parallax.
2.7 INPUTTING MODE
Total Station STS-750RC series has alphanumeric keypad. User therefore can
input numbers and characters directly.
Each key of Total Station STS-750RC series is defined with three characters and
one number.

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Numeric Mode: User can only enter numbers.
Alphanumeric Mode: User can enter numbers and letters. By pressing several
times you can toggle through the characters. For example: A->B->C->7.
Press [F4] to switch between numeric and alphanumeric input mode.
Sign
The characters which can be input in STS-750RC Series are：A~Z . / $ % _ @ &
* ? ! + －etc.
+/－：In alphanumeric input mode, "+" and "-" are considered as normal
alphanumeric characters with no mathematical function. In numeric input mode, it
can only be used in front of the numbers entered.
Special characters
In wildcard searching, it is required to use the sign “*”. In character input mode of
STS-750RC Series, press [+/-] key once.
In the edit mode, the position of the decimal place cannot be changed. The
decimal place is skipped.
All keys can be entered into screen.
Use navigation key to move the cursor.
Use navigation key to delete the relevant character
2.8 POINTSEARCH
Pointsearch is a comprehensive function, which uses a procedure to search
measurement points or known points in internal memory.
The searching scope can be limited to a particular job or the whole storage.
The search procedure always finds known points before measured points that
fulfill the same search criteria. If several points meet the search criteria, then the
points are listed according to their storing time. The instrument finds the most
current (most newly-recorded) known point first.
Direct Search
By entering an actual PtID (e.g.: “A12”), all points with the corresponding point
number are found.
There are many places to start the point searching function. Here, take searching
the known points in “setting station” as an example.

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STEPS
DISPLAY
[MENU]
[Programs]
[Surveying]
[Setting Station]
Input PtID: A12
SEARCH
【Setting Station】
Input Station PtID !
StnPt
:
A12
Select job/input Pt coord
01
SEARCH
LIST
ENH
Select the right one and press OK.
【Pt Serach】1
A12
Known
A12
Station
VIEW
ENH
JOB
OK
If there is no existing point, after inputting
the point name, press F3 to manually
input the coordinates.
【Coordinate Input】
Job
:
A:\DEFAULT.PTS
PtID
:
01
X/N
:
0.226 m
Y/R
:
0.020 m
H/Z
:
20.546 m
BACK
SAVE
If the point doesn't exist in the current job,
then after pressing ENT, it will display
another screen. User can search the point
from other job.
【Pt Search】
Job :
DEFAULT
PtID :
001
More Job
Select job/input PT coord
FIND
OSET
ENH
LIST
Press LIST to view the disk of the
instrument and select the job. Then press
FIND, it will show the point list of the job.
【Pt Search】
Job :
SANDING
PtID :
01
ore Job
Select job/input PT coord
FIND
OSET
ENH
LIST

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2.9 WILDCARD SEARCH
Use wildcard “*” representing those characters you are going to search.
Wildcards are always used if the PtID is not fully known, or if a batch of points is
to be searched for.
Examples:
*: All points of any length are found.
A: All points with exactly the pointID “A” are found.
A*: All points of any length starting with “A” are found (e.g.: A8, A71, ABDE)
*1: All points of any length with a “1” as the second character are found (e.g.: W1,
F15, A1R)
A*1 All points of any length with an “A” as the first character and a “1” as the
third character are found. (e.g.：AD1, AR100, AS16)
STEPS
DISPLAY
[MENU]
[Programs]
[Surveying]
[Setting Station]
Input StnPt: 2*
SEARCH
【Setting Station】
Input Station PtID!
StnPt
:
2*
SEARCH
LIST
ENH
Select the right one.
【Pt Search】1/3
23
Known
22
Known
23
Station
VIEW
ENH
JOB
OK