NIKON TRIMBLE NT0001 Bluetooth module User Manual Focus4 manual 2 p

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CHAPTER

Spectra Precision Focus 4 Total Station User Guide 37

Getting Started 3

In this chapter:

QParts of the instrument

QInstrument keyboard and display

QTurning on the instrument

QTurning off the instrument

QRegional configuration

QList available jobs or data

QEntering data

QCreating or opening a job

QMeasuring distances

After you set up the instrument, see page 23, you

can start using the Focus 4 total station.

This chapter describes the basic features of the

instrument, how to turn it on, change the

instrument settings, and start a job.

3 Getting Started

38 Spectra Precision Focus 4 Total Station User Guide

Parts of the instrument

Figure 3.1 and Figure 3.2 show the main parts of the Focus 4 total station.

Figure 3.1 Back view of the Focus 4 total station (Face 1)

Telescope

Diopter ring

Carrying

Vertical tangent

Horizontal

screw

tangent screw

focusing ring

handle

eyepiece

Face 1 display and

keyboard

The laser safety label shown

below is attached to the

Optical sight

(finder)

Horizontal axis

indication mark

Battery box

release knob

Reticle plate cover

Complies with 21 CFR 1040 . 10 and 1040 . 11

except for deviations pursuant to

Laser Notice No . 50 , dated June 24 , 2007

MADE IN JAPAN

Technoport Mitsuiseimei Bldg.

2,Minamikamata 2

chome,

Ota

ku, Tokyo 144

0035 Japan

NIKON

TRIMBLE CO.,LTD.

underside of the keyboard.

Tribrach clamp

knob

The label shown below is

attached to the underside

of the keyboard.

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.

Spectra Precision Focus 4 Total Station User Guide 39

Getting Started 3

Figure 3.2 Front view of the Focus 4 total station (Face 2)

Objective

The laser safety label shown below

is attached to the side

LASER LIGHT IS

THIS PART

EMITTED FROM

Data output/

input connector

(input voltage

4.5-5.2 V DC)

1mW CW

=630

690nm

Class 2 Laser Product

Do not stare into beam

Laser Radiation

IEC60825-1:2001

Optical plummet

of the telescope.

The laser safety label

shown below is

attached to the

telescope.

Horizontal axis

indication mark

Battery box

release knob

external power

The laser safety label

shown below will be

attached here

ircular levelC

(underneath) when

the optional laser

plummet is used.

1.0mW CW Ё=635nm

IEC 60825

1 ,2001

LASER RADIATION

DO NOT STARE INTO BEAM

CLASS 2 LASER PRODUCT

Leveling screw

Tribrach

(shown here) or

optional laser

plummet

3 Getting Started

40 Spectra Precision Focus 4 Total Station User Guide

Instrument keyboard and display

Instrument keyboard

Use the buttons on the instrument keyboard to carry out the following functions:

Button Function See ...

Turns the instrument on or off. page 48

Illumination button. Turns the backlight on or off.

Provides access to the switch window if held down for one second.

page 43

Displays the MENU screen. page 91

Changes the button input mode between alphanumeric and numeric if

pressed when you are in a PT or CD field.

page 46

Records measured data, moves on to the next screen, or confirms and accepts

the entered data in input mode.

page 89

Returns to the previous screen.

In numeric or alphanumeric mode, deletes input.

Starts distance measurement, using the measure mode settings for the [MSR1]

button.

Displays measurement mode settings, if held down for one second.

page 56

Starts distance measurement, using the measure mode settings for the [MSR2]

button.

Displays measurement mode settings, if held down for one second.

page 56

Spectra Precision Focus 4 Total Station User Guide 41

Getting Started 3

Status bar

The status bar appears on the right of every screen. It contains icons that indicate the

status of various system functions.

Moves to the next available display screen.

Changes the fields that appear on the DSP1, DSP2, and DSP3 screens, if held

down for one second.

page 44

Displays the Angle menu. page 60

Displays the Stakeout function menu.

In numeric mode, enters 7.

page 60

Displays the Station Setup menu.

In numeric mode, enters 8. In alphanumeric mode, enters A, B, C, or 8.

page 60

Displays the Programs menu.

In numeric mode, enters 9. In alphanumeric mode, enters D, E, F, or 9.

page 75

Displays the (HOT) menu, which includes Height of Target and Temp-Press

settings.

In numeric mode, enters – (minus). In alphanumeric mode, enters. (period), –

(minus), or + (plus).

page 46

Displays the Bubble indicator.

In numeric mode, enters 0. In alphanumeric mode, enters *, /, =, or 0.

page 47

Button Function See ...

Status bar

3 Getting Started

42 Spectra Precision Focus 4 Total Station User Guide

Laser-pointer indicator

The icon appears as you turn on the laser pointer. When the icon appears on the

screen, the emitting power is laser class 2.

If there is no icon, the laser pointer is off.

Input mode indicator

The input mode indicator appears only when you are entering points or coordinates. It

shows the data input mode:

Battery indicator

Shows each voltage level of the right and left internal batteries individually. When the

external battery is connected with the instrument, its voltage is shown.

Laser pointer ON

Input mode is numeric. Press a button on the number pad to enter the number

printed on the button.

Input mode is alphabetic. Press a button on the number pad to enter the first letter

printed beside the button. Press the button repeatedly to cycle through all the

letters assigned to that button.

For example, to enter the letter O in alphabetic mode, press [6] three times.

Internal batteries:

• Top: left battery

• Bottom: right battery

External battery

Internal batteries External battery

Battery level indication

Battery low

Spectra Precision Focus 4 Total Station User Guide 43

Getting Started 3

If the battery level is critically low, a message appears.

EDM measurement status

When you are taking measurements, the EDM measurement status shows the mode

that is being used.

When you display observation data, the EDM measurement status shows the mode

that was used when the data was collected:

If there is no icon, Prism mode is being used.

LCD backlight, laser pointer, beep sound, and contrast adjustment

Press the illumination key to open the the 4-switch window and then press:

[1] to turn the LCD backlight on/off

[2] to turn the laser pointer on /off

[3] to turn the beep sound on /off

[4] to open the contrast adjustment window.

Do the following:

•To turn on/off each function, press [ENT] when the option 1, 2, 3 or 4 is selected or

directly press the [1], [2], [3], or [4] key. Holding down the illumination key for one

second also turns on/off the LCD backlight.

•To move the cursor up and down, press [^] or [v].

•To adjust the constrast, in the contrast adjustment window, press [>] or [<] .

•To close the window, press [ESC].

Reflectorless mode

[ENT] / [4]

[ESC]

Switch setup window Contrast adjustment window

3 Getting Started

44 Spectra Precision Focus 4 Total Station User Guide

Switch 1: Adjusting the LCD backlight

Switch 2: Turning on/off the laser pointer

The icon appears while turning on the laser pointer . When the icon is on the screen,

the emitting power is Laser Class 2.

Switch 3: Turning on/off the sound

[DSP] button

Use the [DSP] button to change the current display screen or to change display settings.

Switching between display screens

When several display screens are available:

•the DSP indicator appears at the top left of the

screen

•the screen indicator ( for example, 1/4) appears

at the top right

To move to the next available screen, press [DSP].

For example, if you are currently in the second display screen, press [DSP] to move to the

third display screen. The screen indicator changes from 2/4 to 3/4.

When the secondary distance unit is set, an additional

screen is available. It shows the HD, VD, and SD values.

See also Other settings, page 101.

Turning off the instrument

1. Press [PWR] and [ENT].

2. Do one of the following:

Sleep mode

To put the instrument into sleep mode, do one of the following:

•In the Press [ENT] → OFF screen, press the Sleep softkey.

•Enable the Power Save setting. See also Power saving, page 100.

The instrument wakes up if any of the following events occur:

•You press a button

•The instrument receives a remote control command

•You rotate the alidade

•You tilt the telescope

Press... To. . .

[ENT] again turn off the instrument

the Reset softkey reboot the software and re-start the instrument

access the Basic Measurement Screen (BMS) without an open

job.

the Sleep softkey put the instrument into power-saving mode

[ESC] cancel the power-off process and return to the previous screen

Spectra Precision Focus 4 Total Station User Guide 49

Getting Started 3

Regional configuration

To provide easier configuration for common regional settings, you can quickly

configure the Focus 4 total station to a pre-set combination of default regional settings.

The Regional Configuration screen appears only after the language configuration is

complete and the instrument has rebooted.

1. Follow the steps in Other settings, page 101 to select the required language.

Once the instrument has rebooted the Regional

Configuration screen appears.

2. Press [^] or [v] to highlight the required regional

settings and then press [ENT].

3. If you do not want to change the current settings,

press [ESC] and quit. The instrument continues to use the last settings that were

configured.

The settings affected by the Regional Configuration screen are:

Category Setting Europe International United States

Angle VA zero Zenith Zenith Zenith

Resolution 5" 5" 5"

Distance Scale 1.000000 1.000000 1.000000

T-P Corr. On On On

Sea Level Off Off Off

C&R corr. 0.132 0.132 0.132

Coordinates Order ENZ ENZ NEZ

Label ENZ ENZ NEZ

Power Save Main Unit Off Off Off

EDM Unit Off Off Off

Sleep 5 minutes 5 minutes 5 minutes

Communication Ext. Comm Nikon Nikon Nikon

Baud 4800 4800 4800

Length 8 8 8

Parity None None None

Stop bit 1 1 1

Units Angle GON DEG DEG

Distance meters meters US-ft

Temp °C °C °F

Press mm Hg mm Hg In Hg

Rec Rec Data OFF OFF OFF

CD Field OFF OFF OFF

Add Const 1000 1000 1000

Others XYZ disp Fast Fast Fast

2nd Unit None None None

CD Input <ABC> <ABC> <ABC>

3 Getting Started

50 Spectra Precision Focus 4 Total Station User Guide

The default regional configuration pre-set is “Europe” settings. See also Settings (basic

job settings), page 96.

List available jobs or data

The Focus 4 total station lists available jobs or data when you do any of the following:

•view or edit data (Press [MENU] then select Data)

•open the Job Manager (Press [MENU] then select Job)

•search for points or codes

The current cursor position is shown in inverted colors

(it appears as white text on a black background).

Press [^] to move the cursor one line up, or press [v] to

move the cursor one line down.

If the Page Up icon appears, there are more pages

before the current page. Press [<] to move up one page.

If the Page Down icon appears, there are more pages after the current page. Press [>]

to move down one page.

To select an item from the list, move the cursor onto the item and press [ENT].

Entering data

You can enter the following into the Focus 4 total station:

•A point name or number, see page 50

•A code, see page 53

Entering a point name or number

You can use numeric or alphanumeric names up to 20 characters long to identify

points.

The default name for a new point is the last point name entered, with the last digit

incremented. For example, if the last point name was A100, the default name for the

next point is A101.

If the last character of the previous point name is alphabetic, the default point name is

identical to the last point name.

When the cursor is in a PT (point) field, there are several ways to specify a point, or to

enter coordinates. You can:

•Enter an existing point, see page 51

•Enter a new point, see page 51

Spectra Precision Focus 4 Total Station User Guide 51

Getting Started 3

•Press [ENT] without a point name, see page 51

•Specify a wildcard, see page 51

•Enter a point by recording an instant measurement, see page 52

•Enter a point from a point stack, see page 52

•Enter a point from the point list, see page 53

Entering an existing point

When you enter a known point name or number, the coordinates of that point are

briefly displayed. A short beep sounds before the next screen appears or the next field

is selected.

To adjust the duration of the coordinate window

display, press [MENU] then select Settings /

Others. To leave the window open until you press

[ENT], set the XYZ disp field to +ENT. See also page 101.

Entering a new point

When you enter a new point name or number, a

coordinate input screen appears. Enter the coordinates

for the point in NE, NEZ, or elevation-only (Z) format.

To store the point in the current job, press [ENT] on the

last line (the CD field).

Pressing [ENT] without a point name

To use a point without recording the coordinates, press

[ENT] in a PT field, without entering a point name.

The input coordinates are used in the calculation but

they are not saved in the database. The message This

PT will not be recorded appears.

Specifying a wildcard (*)

If you include an asterisk (for example, A100*) when you enter a point or code name, a

list of points that match the entered text appears.

Use [^] or [v] to move the cursor to the point that you

want to use. Then press [ENT].

If the Page Up icon appears, you can use it to move up

one page on the list. You can also use [<].

If the Page Down icon appears, you can use it to move

down one page. You can also use [>].

When you select a point from the list, its coordinates are displayed and a beep sounds.

3 Getting Started

52 Spectra Precision Focus 4 Total Station User Guide

Entering a point by recording an instant measurement

1. Press the MsrPT softkey:

An observation screen appears.

2. To start a measurement, press [MSR1] or [MSR2].

3. To change the height of the target, select the HT

softkey.

4. When you have finished the measurement, press [ENT] to go to the point recording

screen.

5. Enter the point or code name and then press [ENT].

When you move the cursor to a field, the current or

default value appears in inverted colors. (It appears as

white text on a black background). This is the default

Replace All input mode.

To change the input mode to Overwrite and highlight

the first character, press [>]. To move the cursor to the

end of the string, press [<].

Entering a point from the point stack

The point stack is a list of the last 20 point names used,

in chronological order from last used to first used. To

enter a point from the point stack:

1. Select the Stack softkey when the cursor is in

the PT field. The stack appears.

2. Press [^] or [v] to move the cursor to the point that you want to use.

3. Press [ENT].

When you return to the point input screen, the selected

point name is entered in the PT field, incremented by

one. For example, if you selected the A101 point, A102

appears in the PT field.

Spectra Precision Focus 4 Total Station User Guide 53

Getting Started 3

Entering a point from the point list

1. Select the List softkey when the cursor is in the

PT field. A list of existing points appears.

2. Press [^] or [v] to move the cursor to the point that

you want to use.

3. Press [ENT].

When you return to the point input screen, the selected

point name is entered in the PT field. Add numeric or

alphabetic characters if required.

Entering a code

The CD (Code) field defaults to the last code used. You can select a different code in the

input point screen.

Codenames can be numeric or alphanumeric, and up to 16 characters long.

There are several ways to enter a code:

•Enter a code directly, see page 53

•Enter a code from the code stack, see page 53

•Enter a code from the code list, see page 54

Entering a code directly

1. To change the input mode to alphanumeric or

numeric, press [MODE].

2. Use the keypad to enter the code.

Entering a code from the code stack

The code stack is a list of up to 20 recently used codes.

When you reboot the Focus 4 total station, the code

stack is cleared.

To enter a code from the code stack:

1. Select the Stack softkey when the cursor is in the

CD field. The stack appears.

2. To move the cursor to the code that you want to

use, press [^] or [v].

3. Press [ENT].

The selected code is copied to the CD field.

3 Getting Started

54 Spectra Precision Focus 4 Total Station User Guide

Entering a code from the code list

1. Select the List softkey when the cursor is in the

CD field. A list of existing codes appear.

2. Press [^] or [v] to highlight the feature code that you

want to use.

3. Press [ENT].

A layer has an arrow at the end of the code label. If you

highlight a layer in the list and then press [ENT], the

codes and layers in that layer are displayed.

When you return to the input screen, the selected code

is entered in the CD field.

Advanced feature: Searching for a code using the first character

Items are shown in alphabetic order. To find a code quickly when the code list appears,

use the first-character search. For example, to see feature codes that begin with T, use

the keypad to enter the letter T (press [1] twice).

After each button press, the input mode field displays

the selected letter. For example, if you press [1], S

appears. If you quickly press [1] again, T appears. If you

do not press the [1] button again, the letter T is selected.

Once you select a letter, the cursor moves to the feature

code beginning with that letter.

If there is no code beginning with that letter, the cursor

moves to the next available letter.

Entering values in feet and inches

If US Survey Feet (US-Ft) or International Feet (I-Ft) is selected as the distance unit,

you can enter and display distances, HIs, HTs, and coordinate values in decimal feet or

in feet and inches. See also Unit, page 99, and Other settings, page 101.

To enter values in feet and inches in an input screen, enter the elements, separated by

periods (.), in the following format:

The default denominator is 16. If the denominator is 16, you do not have to enter it,

and it is not displayed on the screen.

<Feet> [.] <Inches> [.] <Numerator> [.] <Denominator> [ENT]

(0–11) (0–15) (0–99)

Spectra Precision Focus 4 Total Station User Guide 55

Getting Started 3

For example, if you enter

[2] [.] [0] [8] [.] [5] [.] [ENT], it appears as 2'08" 5/ (2 feet, 8

and 5/16ths inches).

The following examples show how to enter various values:

The numerator and denominator that you enter are automatically converted to the

closest value from the following list: 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1/16, 3/16, 5/16,

7/16, 9/16, 11/16, 13/16, 15/16.

If the denominator is 16, it is not shown on the screen.

Creating or opening a job

To record data on the Focus 4 total station, you must create or open a job.

Note – Before using the Focus 4 total station for the first time, check that you are using the

required job settings.

Creating a new job

1. Press [MENU]. The MENU screen appears.

2. Press [1]. The Job Manager appears.

3. Select the Creat softkey. The Create Job screen appears.

4. Enter the job name.

5. To check the job settings, select the Sett softkey.

You cannot change the settings for a job once you

have created the job.

6. Press [ENT] in the last field of the Job Sett screen.

The new job is created.

Note – You can have a maximum of only 32 jobs.

To enter... Key in...

65' 5 3/8" [6] [5] [.] [5] [.] [3] [.] [8] [ENT]

65' [6] [5] [ENT]

65' 5" [6] [5] [.] [5] [ENT]

65' 5 3/8" [6] [5] [.] [5] [.] [6] [ENT]

5 3/8" [0] [.] [5] [.] [3] [.] [8] [ENT] or [0] [.] [5] [.] [6] [ENT]

3 Getting Started

56 Spectra Precision Focus 4 Total Station User Guide

Creating a control job

A control job, or common file, stores coordinate data that is used by several field jobs.

To create a control job in the office:

1. Press [MENU]. The MENU screen appears.

2. Press [1] or select Job. The Job Manager appears.

3. Move the cursor to the job to use as the control

job.

4. Select the Ctrl softkey.

5. Select the Yes softkey.

When you enter a point name or number, the system

searches in the current job first. If the point is not found

in the current job, the search is automatically extended

to the control job. If the point is found in the control job, the selected point is copied to

the current job as a UP record.

Measuring distances

CWARNING – Never look at the sun through the telescope. If you do, you may damage or

lose your eyesight.

CWARNING – Precautions should be taken to ensure that persons do not look directly, with

or without an optical instrument, into the beam.

CWARNING – Laser beam path should be located well above or below eye level wherever

practicable.

Sighting a prism reflector

Sight the telescope until you see cross-hairs at the center of the prism reflector.

Sighting a single prism Sighting a tiltable

single prism

Spectra Precision Focus 4 Total Station User Guide 57

Getting Started 3

Taking a distance measurement

To take a distance measurement, press [MSR1] or [MSR2] in the Basic Measurement Screen

(BMS) or in any observation screen.

While the instrument is taking a measurement, the prism constant appears in a

smaller font.

If tracking is set to ON, measurements are taken

continuously until you press [MSR1], [MSR2], or [ESC]. Each

time a measurement is taken, the distance is updated.

To change the height of target (HT), temperature, or

pressure, press [HOT]. See also [HOT] button, page 46.

Settings that relate to corrections (T-P corr, Sea Level,

C&R corr., and Map projection) are included in the job

settings and are job-specific. To change any of these

settings, you must create a new job. See also Job

settings, page 93, and Settings (basic job settings),

page 96.

Viewing and changing the measurement settings

1. Hold down [MSR1] or [MSR2] for one second.

2. To move the cursor between the fields, press [^] or

[v].

3. To change the value in the selected field, press [<]

or [>].

Field Values

Target Prism

N-Prism

Const (prism constant) –999 mm through 999 mm

Mode Precise

Normal

Track Track (continuous MSR) ON

Track (continuous MSR) OFF

3 Getting Started

58 Spectra Precision Focus 4 Total Station User Guide

Target field

•If the measurement is started with the Target

field set to Prism, there is a dash “–” in front of

the prism constant.

•If the measurement is started with the Target

field set to N-Prism, there is a right square

bracket “]” in front of the prism constant.

The symbol then continuously moves from left to right over the prism constant in

the display.

The Target setting is used by the Focus 4 total station to apply better cyclic-error

adjustment in distance measurement. The target setting efficiently eliminates

multipath reflection.

An incorrect Target setting may result in measurements outside the precision and

intervals specified for the instrument.

If a prism target is aimed in N-prism mode, the warning message Signal

High!→Try Prism Mode is displayed because of the excessive light reflection.

A measurement made immediately after changing the target setting may take longer

than usual.

CHAPTER

Spectra Precision Focus 4 Total Station User Guide 59

Applications 4

QHA reset and angle operations

QStation setup

QStakeout menu

QPrograms menu

QRecording measurement data

QSwitching between display

screens

This chapter describes the menu and display

screens, and Focus 4 total station applications.

Use the following keystrokes when working in

the display screens and when you use the

applications:

To switch between

display screens

Press [DSP]. See also

page 90.

To change HT Press [HOT]

To record points Press [ENT]

4 Applications

60 Spectra Precision Focus 4 Total Station User Guide

HA reset and angle operations

To access the Angle menu, press [ANG] in the Basic

Measurement Screen (BMS). To select a command from

the Angle menu, press the corresponding number key.

Alternatively, press [^] or [v] to highlight the command

and then press [ENT].

Setting the horizontal angle to 0

Press [1] or select 0-Set in the Angle menu. The display returns to the BMS.

Entering the horizontal angle

1. Press [2] or select Input in the Angle menu. The

HA Input screen appears.

2. Use the numeric keys to enter the horizontal

angle.

3. Press [ENT].

To enter 123°45'50", key in [1] [2] [3] [.] [4] [5] [5] [0].

The displayed value is rounded to the minimum angle increment.

Station setup

To access the Stn Setup menu, press [STN] in the BMS.

To select a command from the Stn Setup menu, press

the corresponding number key. Alternatively, press [^] or

[v] to highlight the command and then press [ENT].

The last function used is highlighted.

The station setup options are:

•Baseline, page 61

•Known, page 62

•Resection, page 64

•Base XYZ, page 67

•Remote BM, page 68

•BS Check, page 69

Spectra Precision Focus 4 Total Station User Guide 61

Applications 4

Baseline

Select this option for a two-point resection along a known line.

1. Press [1] or select BaseLine from the Stn Setup

menu.

2. Enter a known point as P1.

If you enter a new point name, a coordinate input

screen appears.

Sight P1 and press [MSR1] or [MSR2] to take a

measurement. Press [ENT].

3. Choose how you want to define a known line:

–To define the line by entering P2

coordinates, press [1] or select By Coord.

–To define the line by entering the azimuth,

press [2] or select By Angle.

a. If you select By Angle, the azimuth input

screen appears: Enter the angle value and

press [ENT].

A measurement screen appears.

b. Sight P2 and press [MSR1] or [MSR2] to take a

measurement. Press [ENT].

After the measurement to P2 is completed,

press [ENT]. The coordinates of the station are

calculated.

4. To record the station, press [ENT] or the REC

softkey.

5. To check the measurement, press the DSP

softkey. If you defined the line by entering its

azimuth, the HD and VD between P1 and P2 are

displayed.

If you defined the line by entering the P2

coordinates, the difference of HD (dHD) and VD

(dZ) between your measurement data and input

coordinate data are displayed.

4 Applications

62 Spectra Precision Focus 4 Total Station User Guide

6. Enter the station name, the height of instrument

(HI), and a feature code (CD) if required. The

station name defaults to the last recorded PT + 1.

7. Backsight (BS) defaults to the first point (P1). To

change the selected point, highlight the BS field

and then select the Change softkey.

8. To finish the setup and record the station, press [ENT] in the BS field.

Known

Select this option to set up a station with known coordinates or azimuth.

1. Press [2] or select Known in the Stn Setup menu.

2. Enter a point name or number in the ST field.

–If the input point number or name is an

existing point, its coordinates are displayed

and the cursor moves to the HI (Height of

instrument) field.

–If the point is new, a coordinate input screen appears. Enter the

coordinates for the point. Press [ENT] after each field. When you press [ENT] in

the CD field, the new point is stored.

–If the specified point has a code, the code appears in the CD field.

3. Enter the instrument height in the HI field and then press [ENT].

4. In the Backsight screen that appears, select an input method for defining the

backsight point:

–To sight the backsight by entering coordinates, see the following section.

–To sight the backsight by entering the azimuth and angle, see page 64.

Spectra Precision Focus 4 Total Station User Guide 63

Applications 4

Sighting the backsight by entering coordinates

1. To enter coordinates for the backsight point (BS),

press [1] or select Coord from the Backsight

screen.

2. Enter the point name. If the point exists in the

job, its coordinates are shown.

3. If you intend to take a distance measurement to the BS, enter the height of

target in the HT field.

4. Sight the BS, and then press [ENT] to complete the setup.

If measuring to a known coordinate BS, press

[DSP] to display a QA screen. The QA screen shows

the dHD and dVD values, which indicate the

difference between the measured distance and

the distance calculated from the known

coordinates.

5. To record the station, press [ENT].

6. To finish the station setup after taking a distance measurement, press [ENT].

HA Azimuth calculated by

coordinates

Y0 Yb

Backsight point

(Xb, Yb, Zb)

Station point

(Xi, Yi, Zi)

Instrument height

4 Applications

64 Spectra Precision Focus 4 Total Station User Guide

Sighting the backsight by entering the azimuth angle

1. To enter the azimuth angle to the backsight

point, press [2] or select Angle from the

Backsight screen.

2. If there is no point name for the BS, press [ENT] on

the BS field.

3. In the HA field, enter the azimuth angle to the BS point.

If you press [ENT] without entering a value in the HA field, the azimuth is

automatically set to 0°00'00".

4. Sight the BS point and press [ENT].

Resection

A resection sets up the station using angle/distance measurements to known points.

Backsight point

Azimuth

Station point

(Xi, Yi, Zi)

Instrument height

Height 1

Height 2

Instrument height

Station point (Xi, Yi, Zi)

Y1 Y0 Y2 Y

Known point 1

(X1, Y1, Z1)

Known point 2

(X2, Y2, Z2)

Spectra Precision Focus 4 Total Station User Guide 65

Applications 4

You can use a maximum of 10 points in a resection. Measurements can be distance and

angle, or angle only. Calculation starts automatically when enough measurements are

taken.

You can delete poor observations and recalculate if necessary. You can also select the

BS point.

BTip – If the angle between known point 1 and known point 2 (measured from the station

point) is extremely acute or extremely oblique, the resulting solution will be less reliable

geometrically. For geometric reliability, select known point locations (or station point

locations) that are widely spaced.

1. To start the resection, press [2] or select

Resection in the Stn Setup menu.

2. Enter the point name for the first observation

point (PT1).

3. Enter the target height and press [ENT].

4. Sight PT1 and press [MSR1] or [MSR2].

5. To proceed to the next point, press [ENT].

6. Enter the second point (PT2) and its height of

target.

4 Applications

66 Spectra Precision Focus 4 Total Station User Guide

7. Measure to PT2 and press [ENT].

When the instrument has enough data, it

calculates the station (STN) coordinates.

–If more than the minimum required data is

available, a standard deviation screen

appears.

–To take measurements to strengthen

geometry of the resection, press the Add

softkey. For information about the View

softkey, see Advanced feature: Viewing and deleting a measurement in

resection, page 67.

8. When the results are satisfactory, record the

station. To do this, press [ENT] or the REC softkey.

9. Enter the height of instrument, if required. Press

[ENT]. The ST field defaults to the last recorded

PT + 1.

10. To change the station name, move to the ST field

and edit or replace the text.

BTip – If you have set Split ST to Yes, the ST field defaults

to the last recorded ST value + 1.

BS defaults to the first observed point.

11. To change the BS, press the Change softkey.

12. Select the BS point that you want to use and

press [ENT].

13. To finish the resection setup, move the cursor to

the BS field and press [ENT].

Spectra Precision Focus 4 Total Station User Guide 67

Applications 4

BTip – The minimum data required for a resection is either three angle shots, or one angle

shot and one distance shot. If you use a distance shot, the distance between the target

points must be greater than the measured distance. Stn-Z is calculated from

distance-measured data. If no distances are measured, then Stn-Z is calculated using

angle-only measurements to points with 3D coordinates.

Advanced feature: Viewing and deleting a measurement in resection

To check the measurements to each known point, press

the View softkey on the calculated STN (sigma or

coordinate) screen.

To delete a measurement (because of large sigma values, for example), highlight the

measurement data or display the detail screen for the measurement. Then press the

DEL softkey. The STN coordinates are automatically recalculated.

To continue resection observations, press the Add

softkey. The input screen for the next PT appears.

Base XYZ

Select this option to change the instrument XYZ values.

Base XYZ does not store an ST record in the job, so the BS Check cannot check the

backsight if you enter a station using the Base XYZ option.

You can use this function without an open job.

1. Press [3] or select Base XYZ from the Stn Setup

menu.

The current instrument XYZ values are shown as

the default.

2. Enter the new instrument XYZ values and then

press [ENT].

3. Do one of the following:

dHA Distributed HA errors in each direction

dVD VD errors between measured distance and

calculated distance

dHD HD errors between measured distance and

calculated distance

4 Applications

68 Spectra Precision Focus 4 Total Station User Guide

–To reset the horizontal angle, enter a value in the HA field and then press

[ENT].

–If you do not need to reset the horizontal angle, leave the HA field blank

and then press [ENT].

The Stn Setup menu appears.

Remote BM

Select this option to determine the station elevation.

1. Press [4] or select Remote BM from the Stn

Setup menu.

2. Enter the BM point and press [ENT]. The point

appears briefly. The cursor then moves to the HT field.

3. Enter the HT and then press [ENT].

4. Sight the Bench Mark point and then press [MSR1]

or [MSR2].

The updated station coordinates are displayed.

You can change the HI in this screen.

5. To record the updated STN, press [ENT].

When the HI setting is changed, the Z coordinate is

updated before the station is recorded.

You must complete a station setup before you use the Remote Benchmark function.

Spectra Precision Focus 4 Total Station User Guide 69

Applications 4

BS Check

Select these options to check and reset the backsight direction.

Note – Complete a station setup before using the BS check function.

This function always refers to the backsight point from the last station (ST) record

stored in the current open job.

1. Press [5] or select BS Check in the Stn Setup

menu.

The HA field refers to the current HA reading,

and the BS field refers to the BS in the last station

setup. Enter station coordinates for observations

without recording data.

2. Do one of the following:

–To reset the horizontal angle to the HA set in the last station setup, sight

the BS and then select the Reset softkey or press [ENT].

–To cancel the process and return to the BMS, select the Abrt softkey or

press [ESC].

Stakeout menu

To access the Layout menu, press [L-O] in the BMS.

To select a command from the Layout menu, press the

corresponding number key. Alternatively, press [^] or [v]

to highlight the command and then press [ENT].

The last function used is highlighted.

There are four layout options:

•S-O to Point, page 70

•L-O from Line, page 71

•L-O from Arc, page 72

•XYZ, page 73

4 Applications

70 Spectra Precision Focus 4 Total Station User Guide

S-O to Point

Use this method to lay out a point based on the down, out, and dZ location to a

specified line.

1. Press [1] or select

S-O to Point from the Layout menu.

2. Enter the first point (P1) along the line.

Alternatively, select the MSR softkey to measure a

point.

If you press [ENT] without entering a PT name, you

can enter temporary coordinates. Temporary

coordinates are not recorded in the job.

3. Enter the second point (P2) along the line.

4. Enter offsets to the line.

To enter the value 0.0000, press [ENT] in a blank field.

5. Rotate the instrument until the dHA is close to 0°00'00".

6. Sight the target, and then press [MSR1] or [MSR2].

When a distance measurement is taken, the

difference between the measured point and the

design point appears.

7. To record the point as an SO record, press [ENT].

Note – Press [DSP] to switch between display screens. See

also page 90.

Sta Distance from P1 along the line

O/S Distance perpendicular to the line

(+) Right side of the P1−P2 line

(-) Left side of the P1−P2 line

dZ Difference in height from the line

Spectra Precision Focus 4 Total Station User Guide 71

Applications 4

The following figure shows the terminology used to guide you to the required point.

L-O from Line

Select this option to measure distance and offset values along a specified line.

1. Press [2] or select L-O from Line from the

Layout menu.

2. Enter the first point for the reference line.

Alternatively, select the MSR softkey to measure a

point.

If you press [ESC] in the Record PT screen, the measured point is used but not

recorded in the job.

3. Enter the second point for the reference line.

4. Enter an asterisk ( for example, A*) in the PT field to perform a wildcard search.

A list of matching points appears. Highlight a point in the list and then press

[ENT].

Fill

Out

Cut

In In Out

Fill

Cut

4 Applications

72 Spectra Precision Focus 4 Total Station User Guide

The following figure shows how to determine or input a location relative to a

line used for Layout.

5. Sight the prism or reflective sheet and press [MSR1] or [MSR2].

Note – Press [DSP] to switch between display screens. See also page 90.

L-O from Arc

Select this option to measure distance and offset values on the arc-curve.

1. Press [3] or select L-O from Arc from the

Layout menu.

2. Enter the start of the curve point (P1) and the

azimuth of its tangent line (HA1).

Alternatively, to enter P1 by direct measurement,

select the MSR softkey.

3. Choose a method to define the curve.

P2 can be any point on the tangent line that is to

exit the curve.

4. In the radius (Rad) field, enter a positive value for

a clockwise curve. Enter a negative value for a

counter-clockwise curve.

Dwn Horizontal distance from P1 to the

measured point along the P1-P2 line 6.

Out Horizontal offset from the P1-P2 line to

the measured point

dZ Vertical offset from the P1-P2 line to

the measured point

Plain view Side view

PT1

PT2

Dwn Out

Prism

Prism PT2

Dwn

PT1

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NIKON-TRIMBLE CO., LTD. Bluetooth module Focus4 manual 2 p

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