PENTAX ETH 105A, ETH 107, ETH 107C, ETH 110C, ETH 110F, ETH 120C, ETH 120F Electronic Theodolite Instruction Manual

PENTAX
ELECTRONIC THEODOLITE
ETH-105A/107/107C/110C/110F/120C/120F
INSTRUCTION MANUAL
ASAHI PRECISION CO., LTD.
Safety Precautions (Must be Followed)
HM Distinctive Displays
The following displays are used to distinguish precautions by the
degree of injury or damage that may result if the precaution is ig-
nored.
The following items are intended to prevent possible injury to the
user or other people and/or damage to the instrument before it oc-
curs. These safety precautions are important to the safe operation
of this product and should be observed at all times.
rd
AN WARNING
Items indicated by this display are
precautions which if ignored could
result in death or serious injury.
~
N
{N CAUTION
Items indicated by this display are
precautions which if ignored may
result in injury or material damage.
“и
“Here injury” refers to injuries such as cuts, burns or electric shock
the treatment of which will not likely require hospitalization or long-
term attention.
"Material damage" refers to damage to facilities, buildings, acquired
data, etc.
/N WARNING
@ Never look at the sun through the telescope as this may result
in loss of sight. Always be sure to attach a reticule filter (SE2)
@ Do not use at a place near flammable materials as there is a
risk of explosion.
— /N\ CAUTION
8 Secure a handle to main unit with handle locking screws.
Failure to properly secure the handle could result in the unit
falling off while being carried, causing injury.
O Tighten the tribrach clamp knob securely. Failure to properly
secure the handle could result in the unit falling off while being
carried, causing injury.
8 De not use the carrying case as a footstool as it is slippery
and unstable and may cause you to fall, resulting in possible
injury.
@ When mounting the instrument to the tripod, tighten the center
screw securely. Failure to tighten the screw properly could
result in the instrument falling off the tripod causing injury.
@® Tighten securely the leg fixing screws of the tripod. A person
could be injured by the extended tripod shoes due to loose
screw.
@ Do not carry a tripod with the metal shoes pointing toward
another person as the person may be injured if they strike him
or her.
@ Make sure that your hands and feet are not in the vicinity of
the tripod legs when installing the tripod, or a hand or foot
stab would occur.
@ Do not wield or throw the plumb bob, or a person could be
injured if struck.
N
CONTENTS
DE 4 |
| 2. General ........ inicien Duna e acid 5 |
2.1 = ne... 5
2.2 Standard equipment .........e---.e= ==... .neneneenee nene 9
2.3 Nomenclature of parts ............—..====. e... ——_— 10
2.4 Unpacking and storing ........—e—e.=...e......eaeeese EGE 12
2.5 Battery insertion ...............— «==... em emenene 0 13
| 3. Key Operations a and d Display EE nba 18
3.1 Display .. Nemoneee nana NRNNNUNmEmANAMA NE eonm EN De NNAmAmememenanenA 14
3.2 Keyboard .. mannanearaoeare navara ce nme mam Ame NTENENENDN TN renmemame ns 14
3.3 Function of each O 15
3.4 Other functions ............—.- rrr eraser eee 22
(1) Quadrant indicating buzzer ............. 22
(2) Remaining battery indicator 23
(3) Automatic power-off function ….….…...…..….…..rrereraces 23
(4) Error codes .....................:000.iir e RRE s 24
| 4. Preparation for Surveying ...........==e -=exeversavaacós: 25
4.1 Leveling and centering ............—re=e—... mee. eeneerer rre 25
4.2 Eyepiece adjustment... .——=..—._—. e eee=meninrereeiireemenenenene Y
4.3 Object sighting ..............e........1+1memecenmeeier nene enana 32
| 5. Measurement .….…..……rcsscsserersnennemesssseamareanniren 38 |
5.1 Angle Measurement ....…......…..…..…..rcrensecmennencacennsacecuccnecnna 33
(1) Horizontal angle measurement (right) ....................... 33
(2) Horizontal angle measurement (left) ...............c.......... 33
(3) Vertical angle measurement... 34
(4) Repeat angle measurement... e... 34
5.2 Setting Up ..........—e——.. me=e=seresarereveroeeene rene sree errr eres 39
(1) Setting up the horizontal angle rer 39
(2) Setting up straight lines ee, 40
(3) Setting up vertical neS eee 41
5.3 Stadia Surveying ...........————————me=—ee..e 42
— 2 —
8 Function Selection by - |
Special Key Operations ………:…………reerenerene 48
6.1 Selection of angle mode .. не... ‚еее 48
6.2 Cancellation of automatic power-off function
and selection of data-output parameters ..........e—.... 44
|-7. Maintenance and. Inspection . a pecan tinca 46
7.1 Maintenance .. an... |)
7.2 Inspection and adjustment .. axsacmans ‚еее, 48
(1) Perpendicularity of plate vial to vertical € axiS es 48
(2) Perpendicularity of circular vial to vertical axis .............. 49
(3) Inclination of reticule pattern cross hairs ...............——.—..— 50
(4) Perpendicularity of line of sight to horizontal axis .......... 51
(5) Vertical angle reading with line of sight horizontal ......... 52
(6) Coincidence of line of sight of optical plummet
with vertical axis ................._e_.erererereninen RR e 54
(7) Instructions on inspection and adjustment ..................... 55
-8: Optional Accessories ...............ensrieidiedisreniocazas DO |
| 9. SPECIfiCAtIONS ….……nrnorscrarairsentananncaneanensnsinnenmen 58 |
O Rotary encoder provides fast and accurate angle measurement,
minimizing reading error. Measured angle is displayed on LCD
panel.
O Horizontal angle, which is the most used measurement, is given
priority display on the ETH series. Horizontal and vertical
angles can be observed simultaneously on the two line LCD
display panel.
@ Display panel has a large and easy-to-read segment LCD.
Simple, logical keyboard and mode display provide maximum
operator convenience.
@ Simple key operation provide O setting of horizontal angle at any
position as weil as clockwise and counter-clockwise readings.
Buzzer sounds at every 90° (100g) for easy right angle setting.
O Vertical angle can be converted to percentage of siope by one
touch of a key, very easy to check grade.
@ AA dry batteries are used for power source. Being located in
the standard, they can be easily replaced.
@ Automatic power down prevents unnecessary battery discharge.
The remaining battery capacity is indicated on the display to
prevent the interruption of the work due to lack of capacity.
O Compact and light weight construction equipped with co-axial
tangent screws provides easy operation.
2.1 Precautions
| Storing and environmental conditions‘
@ Avoid operation of the instrument under extremely high and low
temperatures and do not subject the instrument to rapid
temperature changes. (Refer to ambient temperature range
specification.) Instrument may not operate properly when used
at other than temperature range specified.
+50°C(+122°F)
-20°C(-4°F)
@ Be sure to store instrument in the case. Avoid storing in a place
which is subject to vibration, high humidity or dust.
+
- 4
uu
4
Te
<
<
O When storage and usage temperatures are widely different, leave
the instrument in the case until it can adjust to the surrounding
temperature.
| Transportation |
@ Do not subject to impact or vibration during transportation.
@ Transport in carrying case. It is recommended that cushioning
material be used around the case.
@ When not in use for extended periods or having been subjected to
impact or vibration, be sure to check the instrument adjustments
before starting a job.
O | repair is necessary, contact your local dealer. Do not attempt to
repair it oy yourseif.
O To realise full capability of the instrument, adhere to cautions
described in each chapter of this manual.
2.2 Standard equipment
@ Body (with objective cap) <<< eee 1
@ À set of Tool (with case) access es sa mean mess nocceussennasae ss uanaua sement ee 1
{cleaning brush, 2 drivers, hexagonal wrench, 2 adjusting pins)
O A Set of Plumb Bob +*::5+e==ceecrvererranadenerecenraorecerran errar 1
86 Plumb Bob Hook (ETH-107C/110C only) ses 1
o Silicone Cloth sarerareaamaideksaNEra murcia RE Renata aera dE RR REG 1
e Вай Сомег A LL e ac acte serres 1
o AA Dry Battery REA PEAR PE PET TEE TEE EEE 4
O Carrying Case +:1r.esrieniiecereranecanocanarneninaneaer rare rcenrIorereA 1
O Instruction Manual +c-0ccceccenceee ere ere eee ce ce ee sec dan cree Nes 1
“The attached AA batteries are the sample ones which were placed
at factory shipment. Please prepare new batteries before
operation because there is a risk of low battery due to the
spontaneous discharge.
2.3 Nomenclature of parts
— Top-handle
Attaching screw
Collimator Ta ——
a
| 5 Instrument height
A mark (218mm)
Data communication
connector
(ETH-105A/107/107C)
Optical plummet
Lower tangent screw
(ETH-105A/107/107C)
Lower clamp screw
(ETH-105A/107/107C)
Gircle rotating ring
(ETH-105A/107/107G)
PE = ‚
Йонас от =
Ч К DEA
= nu Leveling screw
Je]
Bottom plate Tribrach locking lever
(ETH-105A/107)
“Locsen a fixing screw on the lever when detaching a tribrach.
EDM
mounting stud
Focusing knob
Telescope tangent
Eyepiece lens SCrew
Telescope clamp
screw
Plate vial : | ~ 2 4 Plate vial
| ©
/
LCD panel
Upper tangent screw
Key board Upper clamp
screw
Centering clamp screw
(ETH-107C/110C/1200)
Circular vial
—11—
2.4 Unpacking and storing
Unpacking
(D Gently set down the carrying case so that its cover is upward.
(9) Unlatch and open the case while pushing the latch lock (safety
device).
(3) Take the instrument out of the case.
Store the instrument in the plastic case as follows.
(1D Set the telescope almost horizontal, and tighten the telescope
clamp screw tightly.
(2) Align the yellow dots, and tighten upper clamp screw lightly.
(3) Store the instrument correctly into the case with the yellow dots
towards you.
(4) Close the case lid and lock the clamp.
2.5 Battery insertion
(D Take off the battery box, pressing the button on it.
(2) Place the batteries properly as indicated in the back of the
cover, taking case of its polarity.
(3) Put the button of the box into the slot on the standard cover, and
press it until it clicks.
(ETH-105A)
(ETH-107/107C/110C/110F/120C/120F)
Battery box
a 4 7
of
Battery box
|
:
|
>
/
Caution
€ Pay attention fo the battery holder's (+) and (-) marks for proper
battery insertion. |
| -@ Four 1.2V chargeable batteries (type AA) can
reliable high quality ones must be used,
@ Batteries must be of the same type.
® Do not use a combination of batteries whose remaining capacity
differs, or mix standard and rechargeable types.
'also be used, but
measurements
(ETH-105A/107/107C)
Appears when
data-out is on.
(ETH105/107/107C)
i
2! 22 2/2 31| -Ресетное о
| II E ) ercentage o
Repeat angle display AL slope
(ETH-1054/107:107C) \ ESLILILIL EN VA |
H. angle о y oJ GAD+— Po
"HOLD" display —_ H | Di | NT =
FEE LY Др! Г ОЕ
1 ° . - » . . . + |
H. angle display
| H. angle left display remaining battery
indicator
3.2 Keyboard
===
= © |
DD
0 Es) )
—
————
ETH-105A/107/107C
ON/oer Power switch
O. llumination {Display
= panel and Reticule)
0 SET H. angle 0 set
0% | V. angle/ t f
V/% Yi ang e/percentage o
= |
| (77) |
69) ©) |!
Tm = € |
ETH-110C/110F/120C/120F
H. Angle right/left
(©)
H. angle "HOLD"
(ETH-110C/110F/120C/120F)
Repeat angle
(ETH-105A/107/107C)
—14—
3.3 Function of each key
(1) Power switch ОМ Er
All the segments on the display light 2 seconds after turning the
power on. Clockwise reading mode in horizontal angle is
displayed.
2189899 88 -
H 4109999008 00000
after 2 seconds
Pressing key displays the prompt to index the vertical
angle zero point.
i Fr
0-567 | [v 954620
H mane H nana E
LILILILILO E LILILILILS |
after indexing vertical 0 point
[Vertical angle 0 point indexing]
Turn the telescope upward from the depressed position to index
the vertical O point. V/H mode will be displayed.
Rotate the telescope upward
EN When indexing the vertical circle, the zero point is detected as
the telescope is rotated in elevation from slightly depressed.
O
(2) Selection of vertical angle/percentage of slope. V/ i
Vertical angle and percentage of slope is alternately displayed
each time the key is pressed.
Y 994620 ¿Y - 101 le
H nono E H nana E
DSLILILIL (E Luss
Indicates percentage of slope
+ 100% + 100%
0%
— 100%
—_Hin% graduation mode, when elevated or depressed angle of
the telescope exceeds 45° (100% in display), error message
[P OVER] is displayed.
(3) Horizontal angle O set key. 0 SET
Horizontal angle is set to 0°00'00". This function is valid for both
horizontal angle right and left. The function of this key is not valid
for vertical angle.
H 2553206
is pressed. The buzzer will sound.
+
(} SET | is pressed again to set the horizontal angle to 0" 00'00"
while buzzer is sounding.
I Fr
H nana
Li JLALILI
amb
To prevent accidental misoperation, O set key will not work
unless it is pressed twice.
(4) Horizontal angle right/left key (Nr)
This key is used to select the angle reading mode of the horizontal
angle, clockwise or counterclockwise (indicated with " (> ”
symbol). Clockwise or counterclockwise reading is alternately
displayed each time the key is pressed.
This key will not work for the vertical angle.
H 255370
ur
umi
Ls
m)
E 33406408
| indicates horizontal left
(5) Repeat angle measurement key (ETH-105A/107/107C)
Pressing this key changes the horizontal angle measurement to
repeat mode.
Accumulated value up to + 1999” (+ 19999) can be displayed.
Warning buzzer will sound when angle exceeds + 1500” (+ 1500g9)
<a> | is pressed. The buzzer will sound.
| a | is pressed again while the buzzer is sounding, to set the
—— repeat angle measurement mode.
—
er
H me
ПСГ
ине)
indicates measurement on repetition made
MA To cancel repeat measurement mode, press | < a- | twice.
(6) H. angle hold key | >] <=! (ETH-110C/110F/120C/120F)
Horizontal angle value on display can be retained.
Press e | The buzzer sounds.
_ ;
+
—
Press| >| € | again white sounding to set "HOLD" mode.
—
indicates the retention — | 20 © en quel
of H. angle и IC Г
m)
Lt
Horizontal angle value now remains unchanged when turning the
instrument.
E Press twice to release "HOLD" mode.
(7) Humination key
LCD panel and the reticule pattern are illuminated. The illumina-
tion is automatically turned off after one minute. Pressing key
while on illumination immediately turns off the illumination.
E Use the reticule illumination lever to adjust the brightness of
illumination of the reticule.
Reticule illumination lever
3.4 Other functions
(1) Quadrant indicating buzzer
In horizontal angle measurement, the buzzer sounds when the
reading passes any of 0°, 90°, 180°, and 270”.
The buzzer starts sounding where the angle is = 1' to respective
value, and stops sounding where the angle is within + 20" from the
respective value.
H animan 0”
ALILILIC LE
Buzzer sounds DN
270° 4 Y 90°
180"
Buzzer stops
Ш Buzzer can be canceled if not necessary. (Refer to page 43).
(2) Remaining battery indicator
The status of the remaining battery capacity is displayed on the
bottom right on the display with “ El ” symbolizing the battery.
Mz
Ц
JE
JEPERISIETE Operation possible
т) ©
Get the battery ready for a stand
by
Replacement is recommended.
Jy
pauses eau NE
pese "BATTERY" will disappear 5 sec-
onds after it is displayed. Replace
E E Е ЗЕ H y the batteries.
(3) Automatic power-off function
No operation on the instrument for about 20 minutes makes the
power automatically turn off to prevent unnecessary battery
discharge.
= © With the auto power off being effective; the power auto mati
cally turns off when neither key operation nor turning the
: angles horizontally and vertically more than Ш de done for Ts В
about 20 minutes. | AUT
ES Auto-power off function can be canceled if not necessary.
(Refer to page 44, 45).
(4) Error codes
(ETH-105A only)
compensation range.
{The message may ap-
pear when the instrument
is turned too quickly.)
Displayed code Meaning What to do
Displayed when the in-
hl strument is tilted out of
L HH 7 В чес ечго Relevel the instrument. If
the error message still
appear, repair is required.
Displayed when the tele-
scope is turned too
guickly (faster than 4
revolutions/second).
Turn the telescope to in-
dex vertical 0 point again.
Displayed when the al-
idade is turned too quickly
horizontaliy (faster than 4
revolutions/second).
Press (SET! and
remeasure from the
start.
CN
C=
ri
=
Displayed when the angle
sum exceeds the allow-
able range (approx. 2000”)
in the REPEAT mode.
Press (OSET, and
remeasure from the
start.
ZI
c=
ma
0
Jo
Displayed when the aver-
aged value in repeat
mode differs more than
60" from any of previously
measured values.
Press |DSET| and
remeasure from the
start.
Some problem found in
the instrument. "E-00" is
displayed.
Turn the power off and
then on again. If the er-
ror message still appears,
repair is required.
Ee finite dnb TEER EIB Mate 2 e.
I cl Ea 0 TE
FRALEY
HEHE
3k
4.1 Leveling and centering
(1) When coarse centering using a plumb bob is performed.
| El Setting up the instrument and the tripod |
(© Adjust the tripod legs so that a height suitable for surveying is
obtained when the instrument is set on the tripod.
[For ETH-105A/107/110F/120F]
(2) Hang the plumb bob on the hook of the tripod, and carry out
coarse centering to the station on the ground. At this time, set the
tripod and fix the metal shoe firmly into the ground so that the
tripod head is as level as possible, the center screw is at the
center of its moving range, and the plumb bob coincides with the
station on the ground.
(3) If the tripod head is disturbed by the action of fixing the metal
shoe into the ground, correct the level by extending or retracting
each leg of he tripod.
Instrument
«=I ri В
Idi HY
RC Ie
Bottom plate
Tripod head
Center screw
Plumb bob hook
[For ETH-107C/110C/120C]
@) Set the theodolite on the tripod head. Screw the center screw into
the tripod clamp screw of the theodolite, finger tight.
3 Fix the shifting device after setting it to almost the center of the
shifting range.
@) Pass the plumb bob hook through the hole in the center screw,
and hang it on the ring located at the center of the theodolite lower
end. Adjust the length of the string so that the tip of the plumb bab
is close to the station center.
© Move the theodolite by pushing the bottom plate with the
fingertips. When the tip of the plumb bob coincides with the
station, tighten the center screw securely.
| Leveling with the circular vial
CD By adjusting any two leveling screws, position the bubble in the
center of the vial (see (A)). (To adjust the screws at the same
time, turn them in opposite directions).
(2 Adjust the remaining leveling screws, and position the bubble in
the center of the circle (See (B)).
For the relation between the screw adjusting direction año: bubble |
moving direction, see the arrow marks: in:(A) and (B). Bubble -
moves in the same direction of the movement of a thumb on the
. left hand orin the opposite direction on the right hand.
Leveling Bubble —
screw
Leveling with the plate vials |
( Place the plate vial in parallel with a line joining any two of the
leveling screws. Adjust the two screws, and position the bubble in
the center of the level (A). (To adjust the screws at the same time,
turn them in opposite directions.)
[ETH-105A]
(2) Rotate the plate vial through 80° around the vertical axis. Adjust
the remaining leveling screw so that the bubble comes to the
center of plate vial.
3 Repeat (1) and @ by rotating the plate vial through 90° so that the
bubble is positioned in the center when the plate vial is moved in
any direction.
[ETH-107/107C/110C/110F/120C/120F]
(2 Adjust the remaining leveling screw so that the bubble in another
plate vial comes to the center.
(3) Be sure that the bubbles of both plate vials stay at the center. №
not, repeat D and Y).
(4) Rotate the instrument 180” around the vertical axis, and check the
bubbles stay unmoved.
M See arrows in Fig. below for the relation between the direction |
of leveling screw rotation and the bubble shifting direction. |
m If the bubble is not positioned stable. "Adjustment o of the plate :
vial" is necessary. |
Leveling
screw
| EJ Centering with the optical plummet |
After 1], and [2] and [3 are completed, center correctly in the
following manner using optical plummet.
() First remove the plumb bob. Look through the optical plummet
eyepiece, and rotate the eyepiece knob until the center mark
can be seen clearly.
(2) Rotate the focusing knob of the optical plummet and adjust the
focus to the station on the ground.
Focusing kneb
Optical plummet
Shifting plate
Locking knob
В 5
A
NO
se
i oy Se =
— E E 7
< JN TNE
E
[ETH-107C/110C/120C]
3 Loosen the shifting plate locking knob. Look through the
optical plummet eyepiece, and push the alidade with the
fingertips so that the center mark coincides with the station.
(4) Tighten the shifting plate locking knob. Ascertain that the
bubble stays positioned in the center when rotating the plate
vial position in steps of 90°. If the bubble is not positioned in
the center, adjust the leveling screw.
[ETH-105A/107/110F/120F]
(3) Loosen the center screw of the tripod. Look through the optical
plummet, and move the bottom plate on the tripod head taking
care to avoid rotating the instrument until the center mark
coincides with the station.
@ Ascertain that the bubble stays positioned in the center when
rotating the plate vial position in steps о? 90°. If the bubble is
not positioned in the center, adjust the leveling screw.
Hl The focusing device permits focusing from 0.5m to 90 with the
optical plummet.
M Even if the bubble is shifted by one graduation in 4”, deviation
of centering is just 0.2mm at the instrument height of 1.4m,
giving little effect on survey result.
(2) When coarse centering using a plumb bob is not performed
| Setting up the instrument and tripod |
ID Adjust the tripod so that a height suitable for surveying is
obtained with enough extension/contraction margin left when
the instrument is set on the tripod. Observing the station,
extend the tripod legs and fix the metal shoe firmly into the
ground so that the tripod center is positioned almost right
above the station.
(2) Set the instrument on the tripod head.
| Centering and leveling with the optical plummet |
(1 Look through the optical plummet eyepiece, and rotate the
eyepiece until the center mark can be clearly seen.
(2) Rotate the focusing knab of the optical plummet and focus on
the station.
(3) Looking through the optical plummet,
rotate the three leveling screws to tilt
the instrument so that the center mark
coincides with the station.
(4) Adjust the length of each tripod leg by
extending or contracting it, and position
the bubble of the circular vial in the center
of the circle. (When doing this, place
a foot on the metal shoe of the tripod
to hold it in that position.)
Metal shoe =p
Leveling with the plate vials |
(1) Leve! the instrument as indicated in [3] "Leveling with the plate
vials” on Page 27.
2 After leveling the instrument, re-adjust the center by moving the
instrument on the tripod head if necessary.
4.2 Eyepiece adjustment
(D Remove the telescope lens cap.
O Point the telescope at a bright object, and rotate the eyepiece
ring full counterclockwise.
(3 Look through the eyepiece, and rotate the eyepiece ring
clockwise until the reticule appears as its maximum sharpness.
Vertical hair (single)
Optical axis
Stadia hairs
Vertical hairs (double)
Horizontal hair
Reticule pattern
- = When looking into the eyepiece, avoid intense look to .
| prevent the parallax and eye fatigue. 5
= When it is hard to see the cross hairs due to poor bright-
ness, press E) to Hluminate it. Density of brightness can
be adjusted by a reticule illumination lever.
4.3 Object sighting
(D Point the telescope at the object using the collimator sight.
Tighten all clamp screws.
(2) Look through the telescope eyepiece and finely adjust the
focusing knob until the object is perfectly focused. If focusing is
correct, the crass hairs will not move in relationship to the
object when you move your eye slightly left and right while
locking through the eyepiece. This will eliminate any parallax.
(3) Accurately align the cross hairs with the object, using each
tangent screws.
_+— Object
|) Collimator
| Reticule
illumination
|_| Collimator lever
|| / Focusing knob
(AL
m Turn the focusing knob clockwise to focus € on'a near object.
Тот the knob counterclockwise to focus ona far object. .:
= In'®, parallax may ruin the relation between the object and
cross lines, resulting in the survey error. |
Il When aligning to an object using the tangent screw, always
align by rotating the screw clockwise. If the screw is turned.
past the object, turn it counterclockwise: tothe original. position 5
“and then turn the screw v clockwise | 16 o align t the cross hair on. CE
the object; AE
Eyepiece
В recommended that the object in the retícule: pate be placed N
as close as to the center of the reticule- pattern and that the
bold object be placed between two vertical lines: on the
reticule pattern.
5.1 Angle measurement
(1) Horizontal angle measurement (right)
(T Level the instrument, and turn the power on.
(Z> Sight the first object using the upper clamp and tangent screws
as well as the telescope clamp and tangent screws.
а
H 055700
(3) Press OSET|. While the buzzer is sounding continuously,
press | O SET | again to set the horizontal angle to 0” 00'00".
(4) Collimate the second object using the upper clamp and tangent
screws as well as the telescope clamp and tangent screws.
©) Read the displayed value (a).
art
First object
H 344720
=
Second object
Horizontal angle (a ) = 34° 47'20"
(2) Horizontal angle measurement (left)
D Press after turning the power on.
Horizontal angle measurement switches from horizontal right to
horizontal left. Ma 4 symbol will appear for the indication.
(@ Subsequent operation will be done as in (1) Horizontal angle
measurement (right), except that the order of collimation is
reversed.
- Te switch the mode back io” font. press HA | again.
(3) Vertical angle measurement
(1) Set up the instrument over the station point. Level it and turn
the power ON.
(2) Press to set ta vertical angle mode.
9
nm 7
U-SE €
min nn xl =
H GOOOUE
(3 Turn the telescope to index the vertical 0 point. (Refer to page
- — 95450
H NANA E
АЛАН
() Sight the object A using the upper clamp and tangent screws as
well as the telescope clamp and tangent screws.
(® Vertical angle (8) is displayed.
v, 862440
H JU Ч 120 H Vertical angle ( 6) = 86 24'40"
Zenith (0°00'00")
S
— — — — — — — — — — — Horizontal (90 00'00”)
Object A
MM Factory setting is Zenith 0° as shown above.
(4) Repeat angle measurement (ETH-105A/107/107C)
(1) Press =) and press it again while sounding. Repeat
angle measurement mode is set and the symbol | IS
displayed.
El
|
=
т ©
rm, ri I
Li LI
Tr)
=
Mi
Li
(2) Collimate the first object.
Cu
7 ir
H 25536
A
CN
(3 Press 0 SET | to set angle to zero.
т В
E
co
a
KA
C2
Gm)
(A) Collimate the second object using the upper horizontal clamp/
tangent screw and the telescope clamp/tangent screw.
CTI | ne
IU IU
5) Press to store, in memory, the horizontal angle to the
second object.
Current number of repetitions and then averaged angle is
displayed after about one second.
IL ©
E
a
after 1
second
(CU 19 10
6) Collimate the first object using the lower clamp and tangent
screws as well as telescope clamp and tangent screws.
№ Do not disturb the upper clamp knob and upper tangent screw.
H
_—
H
7 Recollimate the second object using the upper clamp and
tangent screws, as well as telescope clamp and tangent
SCrews,
= (216109
H 2Y0I020E
8) Press
(Completion of duplicate measurements.)
Averaged value of 2
Number of repetition |
| В multiple angles
= Ay Ian Ic (1
c Cm cu i Su
H CHLIJUcCLE H CYLUIUCLE
© Repeat © 7) E to get the multiple angles of desired number of
repetition.
First object
Second object
"Bl The averaged angle of up to 9 times repetition can be _
| obtained. The buzzer sounds for 9th repetition.
5.2 Setting up
(1) Setting up the horizontal angle
Setting up a specific angle (Ex: 90”) from a reference point in civil
engineering and other work:
@ Point the telescope to the reference point accurately, and set
the horizontal angle at 0° by pressing the 0 set key.
Q r "Tr
папе
H UU BE
(2) Loosen the upper clamp knob, and rotate the instrument around
the vertical axis. Tighten the clamp knob when the displayed
number comes close to the specific angle.
(3 Operate the upper tangent screw, and precisely set the
dispiayed number to the specific angle.
ANNAN Ss
H SO0000E
(4 The point the telescope is aiming is marked and becomes a
setting up point.
*
0°00 00°
nod s0u1ajaH
90° 00° 00” , |
e Setting up point
4
(2) Setting up straight lines
A line joining points collimated to an object, near or distant, is a
straight line. This fact is used in setting up straight lines. Setting
up a point C on the extension of the straight line AB is carried out
as follows.
D Set up the instrument at point B on the straight line and level it.
Then, sight point A.
(2) Loosen the telescope clamp screw and reverse the telescope
about its horizontal axis. Set a point on the line of sight and
call it point Ci.
Ci
© ree
T .—— ©
Ae ZZ (ome TT Cc
—
B ® ———€
Ca
3 Loosen the upper clamp screw and rotate the instrument about
its vertical axis and sight on point A again.
(1) Loosen the telescope clamp screw and reverse telescope on its
horizontal axis again. Seta point on the line of sight and call it
point Ca.
(5) Set point C in the center of points C1 and Ce. This point B and
C is an extension of the straight line AB.
= When extending, the straight line in a rather long. distance, -
i repeat lh the extension of the Aran line ina way tl that distance =
(3) Setting up vertical lines
When the instrument is leveled and the telescope is rotated about
its horizontal axis, the line of sight generates a vertical plane, and
a vertical line can thus be set up. Setting up a point B on the
perpendicular at point A is carried out as follows.
(D Set the instrument on a point P at a distance equal to or longer
than AB. Level the instrument and sight point A.
(2) Loosen the telescope clamp screw. Point the telescope upwrd
at the same angle as point B and set a point on the line (point
Bi).
(3) Move the instrument to point which is at right angles to line AP
and at the same distance as AP from point A. Level the
instrument and sight point A.
B
B2 + B:
(4) Loosen the telescope ciamp screw, and point the telescope
upward at the same angle as point B and set a paint on the line
(point Bz).
(5) Set the point B at the crossing point of the extended lines of Bs
and Bz. The line joining A and B is perpendicular.
= When sighting point A in | procedures I D and 3 @, De sure that
~ the bubble is in the center of the plate vial. |
- When more precise results are required, repeat á © © and ©.
(4) respectively using the telescope in the normal and reverse: |
positions. And set B1 and B2 at the centers of the points -
obtained using the telescope in the normal and reverse |
_ positions.
vertical circle is « positioned on the left of the telescopi - 3
_ eyepiece. The reverse position is the state where the vera
circle IS Positioned on he right of the eyepiece. 2
5.3 Stadia surveying
The stacia hairs on the reticule provide the method of measuring
distance and height from the instrument center to a leveling rod.
M Calculations are easy since the stadia constant is 0.
When the line of sight When the line of sight
is inclined IS horizontal
—h
— По
Th t Th
77 ДКА ALA. ДАЙ h
ss
S = 1002 cos?8 5 = 1000
h = 502 sin26 h = Ih-Th
S: Horizontal distance 0 : Difference in top and bottom
h: Difference in elevation stadia hair readings
6 : Vertical angle Ih: Instrument height
Th: Line of sight reading
such items.
6.1 Selection of angle mode
D While pressing for ETH-105A/107/107C/({ Ie) for
ETH-110C/110F/120C/120F), also press! op |to tum the
power ON.
Normal factory settings
ll Modes currently set are displayed with left figure blinking.
2 Use <=* and (Joo ETH-105A/107/107C (
and for ETH-110C/110F/120C/120F) to set desired modes.
| 1 HM IM
ff 1uy |
| Compass graduation 0: Void
1: Zenith 0° 0: Horizontal 0”
1: Mi 0: Void
1: Decimal 0: Void
1: Degree 0: Grade
1: 90° Buzzer ON 0: OFF
(ETH-105A/107/107C) 1: 10" Display 0: 5" Display
(ETH-110C/110F/120C/120F) 1: 20" Display 0: 10" Display
foul ,
> | (or ETH-105A/107/107C) : To change the figure on blink
DI | (for ETH-1100/110F/1200/120F) ) Tom O to 1 orvice versa.
: To shift the blinking cursor toward
the right. (Cursor returns to the left
figure after being shifted completely
| 0 SET to the right.)
(3 Press to store the settings in memory. (Completion
of settings.)
Settings are displayed for 1 second and the instrument
returns to normal operation.
‹
: IB When different graduation units are set simultaneously, E
precedence is given in the following order.
DMI. Y Decimal (3 Degree/Grad
| ШРог setting angle unit in either Degree. or Grade, set both -
4th and fifth digits from the left to 0. o
; = When vertical compass gradualion | is selected, the selection Ш -
of Zenith 0 /Horizontal 0” is disabled: |
- E Modes are stored in memory even when the power is is
“turned off or batteries changed.
6.2 Cancellation of automatic power-off andselection of data-out .
1 While pressing V/% . press ОМ ИДЕЕ to turn the power
ON.
Notmal Factory settings
PELA FOIE
HALA LI LALA LS
—44—
IM Current setting is displayed with a left figure blinking.
2) Use and tor ETH-105A/107/107C (| >l €
nd | SM | for ETH-110C/110F/120C/120F)} to set desired modes.
D
Automatic vertical compensation
1: ON 0: OFF
ал {for ETH-105A only)
í ILILILALIDLO
Stop bit 1: 2 0: 1
Parity 1: ON 0: OFF
Data length 1: 7 0: 8
Baud rate 1: 2400 0: 1200
Angle unit in transmission1: Degree 0: Grade
Auto power-off 1: ON 0: OFF
| @ \ETHHOSAN 07/107C)
. To change the figure on blink
wp | ¢= |(ETH-110C/110F/120C/120F)| from "0" to "17 or vice versa.
: To shift the blinking cursor toward the right. (Cursor
returns to the left figure after being shifted completely to
the right.)
3 Press 0 SET | to store the settings in memory. (Completion
of settings.)
Settings are displayed for 1 second and the instrument returns
to normal operation.
II Settings are stored in memory even when the power is turned
off or battery changed.
7.1 Maintenance
| Stain on the main body |
(1) Brush dust off and wipe off moisture with tissue paper.
(2) Clean off any stains with a soft, dry cloth.
(3) Excessive stains should be removed with a soft cloth soaked in
a water-diluted neutral detergent and squeezed dry.
the lens surface |
( First, brush dust off.
(2) Gently wipe off stains with a silicone cloth or a cleaning cloth for
eye glass lenses.
(3) Excessive stains should be wiped off with soft cotton cloth
impregnated with a cleaning liquid for eye glass lenses.
>
Cleaning liquid
| Handling the battery |
If the instrument is not to be used for a long period of time, be sure
to remove the batteries from the instrument, and then store it.
Note:
Hl Be sure not to use such chemicals as benzene, thinner or
gasoline.
IM Be careful not to scratch the lens surface.
MI Leaving the batteries in the instrument for extended period may
cause power consumption even if it is not in use.
№ If used batteries are left in the instrument, it may be damaged
by the battery fiuid leakage.
7.2 Inspection and adjustment
(1) Perpendicularity of plate vial to vertical axis
Inspection
{> Align the plate vial in parallel with a line joining any two of the
leveling screws. Then, adjust the two screws to center the
bubble in the vial.
[ETH-105A]
Z Rotate the plate vial through 90° around the vertical axis.
Adjust the remaining leveling screw to bring the bubble to the
center. (Be sure not to operate 2 leveling screws adjusted in (1 .)
(3) Rotate the plate vial through 180° around the vertical axis.
(4) No adjustment is necessary if he bubble of the plate vial is in
the center.
[ETH-107/107C/110C/110F/120C/1 20F]
(2) Adjust the remaining leveling screw to center the bubble of the
other plate vial.
(3) Repeat (U and (2) to place the bubbles of both vials in the
center.
@) Loosen the upper clamp screw and rotate the instrument 180°
around the vertical axis.
(5) No adjustment is necessary if the bubbles of the plate vials are
in the center.
| Adjustment |
(DH bubble of the plate vial moves from the center, bring it halt
way back to the center by adjusting the leveling screw which is
parallel to the plate vial.
@ Correct the remaining half by adjusting the bubble adjusting
nuts with the adjusting pin.
(3) Confirm that the bubble does not move from the center when
the instrument is rotated by 180°.
4) When the bubble moves, start from (1) once again.
Plate vial
Plate vial
Bubble
adjusting nut
(2) Perpendicularity of circular vial to vertical axis
Inspection
No adjustment is necessary if the bubble of the circular vial is in
the center after inspection and adjustment of "Perpendicularity of
the Plate Vial to the Vertical Axis".
Adjustment |
If the bubble of the circular vial is not in the center, bring the
bubble to the center by turning the bubble adjusting screw with the
adjusting pin.
Circular vial
Bubble acjusting
SCrews
(3) Inclination of reticule pattern cross hairs
EN Inspection
(1) Set an object point A on the line of sight through the telescope.
(2) Move point A to the edge of the field of view by adjusting the
telescope tangent screw (рот! А’).
3) No adjustment is necessary if point A moves along the vertical
line of the reticule.
Vertical line… Line of Sight Axis
Adjustment
D If the point À does not move along the vertical line, first remove
the eyepiece cover.
(2) Loosen the four cross hair adjusting screws uniformly with the
adjusting pin. Rotate the cross hair around the sight axis, and
align the vertical line of the cross hairs with point A'.
3 Tighten the cross hairs adjusting screws uniformly. Repeat the
inspection and check that the adjustment is correct.
Cross hair adjusting
screw
(4) Perpendicularity of line of sight to horizontal axis
Inspection
(1) Set an object point A at a distance of 30 to 50m away from the
instrument, and sight it through the telescope.
(2) Loosen the telescope clamp screw and reverse the telescope
around the horizontal axis. Mark a point set on the line of sight
at about the same distance to the object point A, and call it
point B.
3) Loosen the upper clamp screw, and rotate the instrument
around the vertical axis. Sight point A again.
(4) Loosen the telescope clamp screw, and reverse the telescope
around the horizontal axis. Mark a point on the line of sight at
about the same distance as point B, and call it mark C. (The
telescope has now returned to its normal position.)
O) No adjustment is necessary if point B and C coincide.
30 — 50 т 30 — 50 т
(1)
A @
Adjustment
(D If points B and C do not coincide, set up a point C located 1/4 of
the length BC from the point C toward B.
(2) Turn the two cross hairs adjusting screws opposed horizontally
by first loosening one, then tightening the other with the
adjusting pin. Move the cross hair so that point D is set on the
line of sight.
3) Repeat the inspection and check that the adjustment is correct,
(5) Vertical angle reading with line of sight horizontal
Inspection
(D Set up as usual and turn the power on. (Set the mode to V/H)
(2) Sight the telescope at any reference target A. Obtain vertical
angle (r).
(3) Reverse the telescope and rotate the alidade. Signt again at A
and obtain vertical angle (q).
@ifr +0 = 360", no further adjustment is required.
*If difference d (r + £- 360°) is greater than the rated value,
adjustment is required.
EN If the horizontal 0” mode is used, r + $ = 180% or 540°.
Adjustment
D Turn the power off.
2 While pressing | {) SET |, press | ОМ ИДЕЕ to turn the power on.
2188898888 @ -5Ё
4709999908
(3 Index the vertical O point.
mn Hr
urFS UL
с ЗЕ о * ETH-105A only
=)
Z Sight the object A, and press (0 SET
UFFS UC
SIEP E
(5) Reverse the telescope and rotate the instrument. Sight the
object À again with the telescope reversed, and press () SET
{Adjustment completed).
*ETH-105A only
V - rn п 12 offset value for V.0 point
E LI SLI Y
г п 1 Vertical compensation
L U 4 3 offsetvalue
(ETH-105A only)
after 3 minutes
H Nm a | Horizontal angle measure-
LULU LIEU H ment mode is displayed.
(6) Repeat from Inspection ( to make sure that adjustment is
properly done.
H In adjustment &, display returns "STEP 1" when 0 SET} is
pressed if the telescope is sighted widely off the object (more
than 5"),
In thisn the telescope to the normal position and start adjust-
ment with (4).
M Be sure to precisely sight the telescope at the object.
(6) Coincidence of line of sight of optical plummet with
vertical axis
Inspection
(D Set the instrument on the tripod, and place a piece of white
paper with a cross drawn on it right under the instrument.
(2 Look through the optical plummet, and move the paper so that
the intersecting point of the cross comes to the center of the
field of view.
3) Adjust the leveling screw so that the center mark of the optical
plummet coincides with the intersection point of the cross.
(4) Rotate the instrument around the vertical axis. Look through
the optical plummet each steps of 90° rotation, and observe the
center mark position against the intersection point of the cross.
It the center mark always coincides with the intersection point,
no adjustment is necessary.
=,
5)
О.Р. adjusting SCrews
| Adjustment |
T If the center mark does not coincide with the intersection point,
rotate counterclockwise the cap put on focusing knob of optical
plummet and then remove it.
(2 Mark the paint set on the line of sight at each step of 80° on the
white paper and call them A, B, C and D.
(31 Join the opposed points (A, C and B, D) with a straight line, and
set intersecting point O.
(4) Turn four optical plummet adjusting screws with a adjusting pin
so that the center mark coincides with the intersecting point O.
(5) Repeat the intersection procedures starting with Inspection
and confirm if the adjustment is correct or not.
(7) Instructions on inspection and adjustment
@® When inspecting and adjusting the instrument, take steps in
numerical order as much as possibie.
8 Pay special attention to articles 3] [4 and [4] [5 so that steps for
adjustment and inspection may be taken in numerical order.
O When adjustment is completed, be sure that adjusting screws
are firmly tightened. Tighten the adjusting screw by turning the
screw to the direction for tightening. When turning the screw
back, tighten the screw after it is rotated too much.
8 Repeat inspection after adjustment, and check if the instrument
has been adjusted properly.
(1) Diagonal Eyepiece [SB10]
The diagonal eyepiece can be attached to the telescope eyepiece
for convenience in observing the zenith or surveying in confined
spaces. To attach the diagonal eyepiece to the telescope, turn the
telescope eyepiece ring counterclockwise 10 remove the eyepiece,
and attach the diagonal eyepiece by turning its ring clockwise.
The eyepiece can be rotated through 360°.
When sighting is made through the telescope with the diagonal
eyepiece attached, the reticule may be seen deflected vertically or
horizontally, but this has no influence upon accuracy. It can be
corrected with three adjusting screws if necessary.
Diagonal eyepiece
(2) Reticule filter [SE2]
A reticule filter [SE2] can be attached for the sun observation on
the reticule.
Reticule filter
(3) Bar Compass [SC7] |
Magnetic north can be obtained by mounting the bar compass
onto the top handle.
Bar compass
IM Telescope
Magnification
Effective aperture
Resolving power
Field of view
Minimum focus distance
Stadia ratio
Stadia constant
E Angle measurement
Type
Detection mode (V)
(H)
Minimum display
Accuracy (DIN18723)
Diameter
30x
26x (ETH-120C - 120F)
45mm
Zn
2.6% (1°30)
0.85m
100
0
Incremental rotary encoder
Dual (ETH-105A/107/107C)
Single (ETH-110C/110F/120C/120F)
Dual (ETH-105A/107/107C)
Single (ETH-110C/110F/120C/120F)
(ETH-105A/107/107C): 10"/5" (20cc/10cc)
selectable
(ETH-110C/110F/120C/120F): 20"/10" (20cc/
20cc) selectable
ETH-105A : 5"
ETH-107/107C 7
ETH-110C/A1CF :10"
ETH-120C/120F : 20"
79mm
M Vertical angle compensation (ETH-105A)
Method
Type
Range
E Display
Type
Display panel
Automatic compensation
Liquid reflecting
+3
Segment LCD in two lines
ETH-105A/107/107C/110C
ETH-110F/120C/120F
: Dual
: Single
E Vertical axis
Hl Sensitivity of vials
Plate vial
Circular vial
E Tribrach type
E Optical Plummet
Magnification
Focusing range
E Power source
Type
Voltage
Operation time
(Manganese)
(Alkaline)
H Ambient temperature
EH Dimensions
Instrument
Carrying case
E Weight
Instrument
Carrying case
ETH-105A/107/107C
ETH-110C/110F/120C/120F:
ETH-105A/107/107C
ETH-110C/110F;120C/120F:
8/2mm
ETH-105A/107
ETH-107C/110C/120C
ETH-110F/120F
3x
0.5m ~oe
4 x AA dry battery
6v
ETH-105A/107/107C
ETH-110C/110F/120C/120F:
ETH-105A/107/107C
ETH-110C/110F/120C/120F:
-20°C — +50°C /-4°F —
L152 x H309 x W172mm/
L56.0 x H12.2 x We.gin.
L210 x H380 x W240mm/
L3.8 x H15.0 x W9.4in.
ETH-105A/107/107C :
ETH-110C110F/120C/120F:
2.1 kgs./4.6 Ibs.
: Dual
Single
: 40"/2mm
60"/2mm
: Detachable
: Shifting
: Fixed
: 10 hrs.
23 hrs.
: 28 hrs.
45 hrs.
+122°F
4.7 kgs/t0.4 Ibs.;
4.4 kgs/S.7 lbs.
This device complies with protection requirement for residential
and commercial areas. If this device is used close to industrial
areas or transmitters, the equipment can be influenced by electro-
magnetic fields
PENTAX
ASAHI PRECISION CO.,LTD
1-1-21, Shirako, Wako-shi,
Saitama-ken, 351-0101, Japan
Tel: +81-48-461-5377
Fax: +81-48-466-3979
CE
The CE marking assures that
this product complics with
the requirements of the EC
directive for safety.
10.12.1988 Second edition
ETO0201E
Printed in Japan
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