Trimble TRIMPACK, 16768-00, 16768-10 Operation & Maintenance Manual

lncludes Have-Quick Option

TRIMPACK

GPS Receiver

Operation &

Maintenance Guide

TRIMPACK is a trademark of Trimble Navigation Limited

TM

MANUAL IMPROVEMENT

Please help improve our manuals by sending comments and
suggestions to our headquarters in Sunnyvale, California

(see

address on the rear cover).

Thank you.

WARRANTY

As an expression of confidence in our products to continue
meeting the high standards of reliability and performance
that our customers have come to expect, Trimble Navigation
products are covered by a limited warranty, as described in
the

TRIMPACK

Specification, Installation, and Reference

Manual,

Part Number 13498.

For warranty repair, please call [phone] (outside
California) or [phone] (inside California) to request
an RMA number from the Service Representative. Ship the
equipment (with RMA number noted) to Government
Operations, Trimble Navigation Ltd., 617 North Mary
Avenue, Sunnyvale, CA 94086. See the Warranty Return
Procedures and Warranty Return Form on the last page of
this manual.

TRIMPACK

GPS Receiver

Operation &

Maintenance Guide

Includes Have-Quick Option

Part Number 13468

Revision C

Printed in USA

September 1990

Copyright © 1990 Trimble Navigation Limited

All rights reserved

DMS

Dn
EXT
FIX
GMT
GPS

INC
INT
Km
KPH
KTS
L
Lat
LCD
LOC
Lon
m
MG

Military Grid Reference

System

1/6400th of a circle
Miles per hour
North American Datum
Position
Right
Range and azimuth
Radians
Range

Special

Speed over ground

Slant range

Space vehicle or

satellite
Status
True north reference
Time to go
Universal Coordinated

Time (same as GMT)
Universal Transverse

Mercator
Velocity
Vertical
Vertical angle
World Geodetic System
Waypoint
Crosstrack error (L or R)
Two dimensional
Three dimensional
Degrees Centigrade

(Celsius)

Degrees Fahrenheit

MGR

or

MGRS
MIL
MPH
NAD
POS
R
R+A
RADS
rng
SPCL
SOG
srg

SV

STS
Tr

ttg

UTC

UTM

vel

vrt
vta
WGS
WPT
xte
2-D
3-D

°C
°F

Averaging mode
Altitude
Azimuth (Bearing)
Course over ground
Continental

United Status
Decrement
Degrees

Distance
Degree, Minutes,

Decimal Minutes

coordinate system

Degree, Minutes,

Seconds coordinate
system

Down
External
Position fix
Greenwich Mean Time
Global Positioning

System
Increment
Internal
Kilometers
Kilometers per hour
Knots
Left
Latitude

Liquid Crystal Display
Local (time)
Longitude

Meters
Magnetic north

reference

GLOSSARY

The following terms and abbreviations are used in this manual:

AVG
ALT
AZM
COG

CONUS

DEC
DEG
DIST
DM.

ii

Days of the week: SUN MON TUE WED THU FRI SAT

Latitude and Longitude hemispheres:

N (north)

S (south)

E (aast)

W (West)

Great Circle: The shortest distance between two points on the
surface of a sphere.

SAFETY

iii

WARNING

The battery pack at the rear of the

TRIMPACK

may
contain lithium batteries. Lithium batteries contain
flammable materials and require special handling. To
prevent rupture or leakage of battery fluid, the
following safety precautions MUST be observed:

•

Do not puncture batteries.

•

Do not short circuit batteries.

•

Do not heat batteries or place them in fire.

•

Do not recharge lithium batteries.

•

Do not install batteries backwards.

•

Do not dispose of discharged batteries except

as prescribed in Federal and State regulations.

•

Do not leave loaded battery pack in the direct

sunlight for extended periods.

•

Do not leave loaded battery pack inside closed

vehicles exposed to the sun.

WARNING

The case of the TRIMPACK conducts electricity, even
though it is made of plastic. When connecting the unit to
an external power source, be careful to avoid electrical
shock just as if the case were metal.
Failure to heed these warnings may result in personal
injury or death.

iv

CAUTION

The TRIMPACK is designed for rugged use in difficult
field environments. lt will operate continuously in air
temperatures from -30° to +65°C (-22° to +150°F)
and in environments with up to 100% humidity.
However, take reasonable care of the unit as with
any other piece of high-precision equipment.

Part No. 12545-00

•

No label search.

•

Almanac and waypoint

transfer.

•

Dist, Calc for waypoints
only.

•

Specify saved waypoint.

v

MANUAL APPLICABILITY

This manual applies specifically to the newest generation

TRIMPACK receivers (part numbers 16768-00 and 16768-10). It

can also be used with the previous generation TRIMPACK (part
no. 12545-00), with attention to a few differences. The part
number label can be found on the back panel of the receiver
when the battery pack is removed.

Part No. 16768-XX

•

Waypoint label alpha-

numeric search.

•

Waypoint saved to next

available empty waypoint.

•

Almanac, waypoint and

setup parameter transfer.

•

Dist, Calc for FIX and
waypoints.

vi

ABOUT THIS MANUAL

This manual provides information to quickly familiarize you
with the TRIMPACK and enables you to use it to perform
positioning and navigation functions. This manual is arranged
in three main parts and two appendices which describe

TRIMPACK options:

Description: describes the Global Positioning System (GPS)
and the TRIMPACK receiver, identifies the controls, indicators,
and connectors, and defines basic operations.

Operation: describes how to prepare the TRIMPACK for use,
defines the functions it can perform, and provides essential
information for each of the display formats.

Maintenance and Reference: describes operator maintenance

and provides a list of the reference datums built into the

TRIMPACK.

Appendix A: describes the Have Quick/Pulse-Per-Second
option.

Appendix B: describes the 1089-Waypoints option.
The manual is organized for ease of use. In most cases,

example screens or figures are presented on the left-hand page,
and the corresponding text is located on the right-hand page. In
the Operation section, the descriptions of the operations are
arranged in the same order as the rotary switch positions which
select them.
For clarity, the same abbreviations displayed by the TRIMPACK
are used throughout the manual; refer to the Glossary for
their meanings.
Additional detailed information is provided in the TRIMPACK
Specification, Installation, and Reference Manual, Trimble
Part No. 13498.

TABLE OF CONTENTS

Glossary

...............................................................................

Safety

...................................................................................

About This Manual

..........................................................

1: DESCRIPTION

ii

iii

vi

vii

GPS and the

TRIMPACK

................................................................

1

Controls and Indicators

.....................................................

2

Battery Packs and Connectors

..........................................

4

Coordinate Systems

..........................................................

6

2: OPERATION

Rotary Knob Positions

.....................................................

8

Setting Up for a Mission

...................................................

10

During the Mission

............................................................

11

How to Change Data

.......................................................

12

Turn On/Off

.....................................................................

14

FIX and POS

.....................................................................

16

R+A

...................................................................................

22

Navigation with

TRIMPACK

..........................................................

24

NAV

..................................................................................

26

WPT

..................................................................................

30

OPS

....................................................................................

32

STS

....................................................................................

36

3: MAINTENANCE AND REFERENCE

Maintenance

.....................................................................

42

Datum Selections

..............................................................

44

APPENDIX A:

HAVE-QUICK/PULSE-PER-

SECOND OPTION

...............................

45

APPENDIX B: 1089-WAYPOINTS OPTION

................

47

QUICK REFERENCE GUIDE

..............

inside

rear cover

GPS and the TRIMPACK

1

GPS and the TRIMPACK

GLOBAL POSITIONING SYSTEM (GPS)

GPS is a satellite-based radio navigation system. The system
ultimately will be a constellation of 21 active satellites and 3
spares in orbits around the earth. This configuration ensures
worldwide operation with 24-hour, all-weather coverage. Each
satellite transmits data that enables GPS receivers to provide
precise position and time.

NOTE

Until the constellation is complete, coverage may be
limited to specific hours of each day in certain areas
of the world.

TRIMPACK

The TRIMPACK is a hand-held, battery-powered navigation set
that receives data from GPS satellites and calculates and
displays position, velocity, time, and navigational data. Three­dimensional fixes are obtained when tracking 4 or more
satellites; 2-dimensional fixes can be obtained from 3 satellites
and user-entered altitude.
The TRIMPACK requires line-of-sight access to the satellite

signals. Hold the unit level, with its internal antenna facing
toward the sky. GPS navigation signals are similar to light, so
anything that blocks light will block or reduce the effectiveness
of the signals. The more unobstructed view of the sky you
have, the better your set will perform. Avoid placing your
hands on or over the antenna when the TRIMPACK is in
operation.

Display Screen

Rotary Knob

2

CONTROLS and INDICATORS

Internal Antenna

tL-Ru Switch

(Left-Right)

pINC-DECq Switch

(Increment-Decrement)

3

CONTROLS and INDICATORS

DISPLAY SCREEN

The

TRIMPACK

displays information on the backlit 4-line
LCD screen. The screen contents are determined by the
rotary knob and user-selected options.

ROTARY KNOB

This 8-position switch selects the type of operation that the
unit will perform—for example: "WPT" (waypoint)
operations.

tL-Ru

(Left-Right) SWITCH

This 2-way switch is used to select items on the screen
(indicated by a flashing box). Momentarily pressing the
switch to the

left

or

right

selects different screen items.

pINC-DECq

(Increment/Decrement) SWITCH

This 2-way switch is used to walk through numbers, letters
of the alphabet, or options (as on a list). Momentarily
pressing the switch

upward

or

downward

changes the value

of the selected item on the screen.
The

pINC-DECq switch is also used as a trigger when the

selected screen item represents an action to be performed
(indicated by brackets—<action>).

Both switches automatically repeat at a rapid rate when
held

on. This feature can be used to quickly roll up to high
numbers or to scan past many screen items to select one
farther on.

BATTERY PACKS and CONNECTORS

Battery Pack

Power Dataport Remote
Connector Connector Antenna
Connector

4

NOTE: Mating cap must be installed on power connector

when operating with the battery pack. (Caps are
not shown in this figure so that connectors are
visible.)

5

BATTERY PACKS and CONNECTORS

BATTERY PACKS

Three battery packs are currently available to support
specific user requirements. To remove or install battery
packs, refer to Section 3,

Maintenance

(page 43).

Battery Pack Battery Type (Qty.) Continuous Use

13827-00 Lithium BA5800 (2) 21 hours
13828-00 AA batteries (8) 3,5 hours
13829-00 Nickel Cadmium 5 hours

(rechargeable) (16-hrs. to recharge)

CONNECTORS

•

Power: Connects to a 9 to 32V, DC power source. When

operating on batteries, the mating cap must be installed

to

enable the unit to operate.

•

Dataport:

Connects for data transfer to another

TRIMPACK, a data recorder (computer), or a digital radio

channel. When not in use, the connector's mating cap
should be installed to keep the connector clean.

•

Remote Antenna:

Refer to TRIMPACK Specification, In-
stallation, and Reference Manual for detail on cable
requirements. When not in use, its dust cover should be
installed to keep the connector clean.

OTHER OPTIONS

•

Vehicle mounting brackets are available for the

TRIMPACK

and remote antenna.

•

A neckstrap can be attached by clipping it to the holes on

both sides of the

TRIMPACK.

day of week & time
latitude
longitude
altitude & accuracy

day of week & time
latitude
longitude
altitude & accuracy

day of week & time
grid & easting
zone & northing
altitude & accuracy

DM.:

UTM:

MGRS:

User-Alterable Field

6

COORDINATE SYSTEMS

DMS:

day of week & time
gridzone
square & coordinate
altitude & accuracy

7

COORDINATE SYSTEMS

The

TRIMPACK

can display position information in any of
four coordinate systems. The desired system can be selected
from option screens in the STS knob position. Once a
coordinate system is selected, all displays use that system.
The coordinate systems are described below.

DMS: Latitude/longitude-based system, with position
expressed in degrees (°), minutes ('), and seconds (") to a
tenth of a second.

DM.: Latitude/longitude-based system, with position

expressed in degrees and minutes. Minutes are displayed to
one-thousandth of a minute in decimal form.

UTM: Universal Transverse Mercator coordinate system,
providing the grid zone and the northing and easting
component values of the position in meters.

MGRS: Military Grid Reference System, providing the
grid

zone, the grid square, and the position coordinates in

meters.

NOTE

Screen examples shown in the main parts of this
manual represent the basic

TRIMPACK

screens.

Screens
shown in Appendices A and B illustrate the
differences provided by the Have-Quick and 1089-

Waypoints options, respectively.

STS

OFF

FIX

POS

R+A

NAV

WPT

OPS

Position display

(Automatic Power

Conservation)

Position display

Range + Azimuth

Navigation

Waypoint

Miscellaneous
Operations

Status and Setup

ROTARY KNOB POSITIONS

8

NAV:

WPT:

OPS:

STS:

The

TRIMPACK

powers down after 15-second delay.

Same as POS but saves power by turning off after a
time interval.

Displays the most recent position fix.

Shows range, azimuth, and vertical distance to 3

se-

parate, selectable waypoints simultaneously.

Provides navigation data to a selected destination

waypoint.

Edit or define 26 waypoints.

Provides

additional

functions

for

manipulating

waypoints or controlling the

TRIMPACK.

Provides operating status information and allows

set-

ting up display options.

The NAV and OPS knob positions have 4 selectable

screens;

the STS position has 3; all other positions have a

single

screen.

9

POS:
R+A:

ROTARY KNOB POSITIONS

To select the type of operation that the

TRIMPACK

will

perform, rotate the knob to:

OFF:

FIX:

Choosing one of the 50 reference datums

(see page 44)

Coordinate System:

Selecting the desired coordinate system

to

be used:

DMS, DM., UTM, or MGRS

Operating Parameters:

Time offset:
Distance Units:

10

Angular Units:
Azimuth:

SETTING UP FOR A MISSION

The

TRIMPACK

must be set up for the desired display

options.

These include:

Datum:

Selecting the following:

UTC or Local
English

(feet, miles, miles per hour),

Metric

(meters, kilometers, kilometers

per hour),

or

Nautical

(feet, nautical miles, knots)

Degrees, Mils, or Radians

True or Magnetic North

Waypoints:

Entering data to define up to 26

waypoints

You can set these options manually, or they can be

downloaded

to the

TRIMPACK

from a data loader or another

TRIMPACK.

Any

of these items can also be changed during

the mission.

All of these parameters except waypoints are selected from

the

setup screen of the STS knob position;

see page 39 for

detailed

information.

Waypoints are set in the WPT knob position;

see page 31.

11

DURING THE MISSION

The

TRIMPACK

can be used to perform the following

operations:

Determine Position: Position fixes are calculated

approximately once per second. When tracking 4 or more
satellites, the fix is 3-dimensional; 3 satellites yield

2-dimen-

sional fixes.

•

When the "averaging" feature is enabled, the most recent
fix is averaged with previous fixes for higher accuracy.
(Note: the result assumes the

TRIMPACK

is stationary

during averaging.)

The FIX and POS knob positions display position fixes; see
pages 16-21. The OPS knob position provides the
"Averaging"

function; see page 35.

Determine Range and Azimuth: The

TRIMPACK

calculates

and displays the range, azimuth, and vertical distance from

the present position to any three of the defined waypoints.

The R+A knob position provides this function; see page 23.

Navigate to Another Position: Four selectable screen
displays show various information to help navigate from the
present position to any waypoint.

The NAV knob position provides these functions; see pages
24-29.

digits are changed individually

trigger

trigger for other
screens available

12

HOW TO CHANGE DATA

Typical Screens

letters are changed individually

settings can
be changed

HOW TO CHANGE DATA

Most screens contain some user-alterable items. These may
include numbers, letters, or options that may be changed, or
"triggers" that cause an action. In this manual's example
screens, the alterable items are shown in

reverse type.

On the screen, a flashing box indicates the selected item.

Use

the

tL-Ru

switch to select a different item. Pressing the

switch once to the

right

selects the next screen item;

left

selects the previous item. At the last item, the next selection
returns to the first item on the screen.

Using

pINC-DECq

alters the value of the item or triggers

the action. Pressing the switch

upward once

changes the

value of the selected item on the screen to the next level;

downward

changes to the next lower value. At the highest

value, the next step returns to the lowest value.

CAUTION

The tL-Ru switch only selects screen items; it does
not

affect their values. However,

pINC-DECq

al-

ters

the value of the selected item. Before using

pINC-DECq

, make sure the correct item is selected.

SAFETY TIMER

If no switches are pressed for 25 seconds, the selected item

stops flashing and

pINC-DECq

has no effect, thus prevent-

ing accidental changes. After this occurs, the

tL-Ru

switch

must be used to

once

again select an item to be changed.

<MORE> TRIGGER

Some rotary knob positions have more than one screen

format.

The additional screens can be viewed by selecting

the

<more> trigger (using

tL-Ru

), and then pressing

pINC-

DECq

to switch to the next screen.

13

14

TURN-OFF

(displayed briefly)

software version

(displayed for
15 seconds)

TURN ON/OFF

TURN-ON

TURN ON/OFF

TURN-ON

Turn the

TRIMPACK

on by turning the rotary knob to one of
the operating positions. A brief sign-on message is
displayed,

while the

TRIMPACK

performs a self-test. No

switches are

active during this time. When the power-on

sequence is

completed, the rotary knob position determines

the type of

operation.

TURN-OFF

When you turn the rotary knob to OFF, the screen displays

a
15-second countdown before power is turned off. During
the 15 seconds, you can return the

TRIMPACK

to full opera-

tion instantly by turning the rotary knob to another position.

BACKLIGHT CONTROL

Pressing

pINC-DECq

during the countdown varies the

screen backlight brightness in four steps from off to full.

MEMORY ERASE FUNCTION

The memory erase function lets you instantaneously erase all

information stored in the unit.

CAUTION

Use this function only when absolutely necessary. All
waypoints, the stored almanac, the time clock, and
the last fix are erased from memory. All fields in the
26 waypoints are set to zero. After erasing the
memory, the receiver has no knowledge of satellite
location; the time required to compute the next fix
may be as long as 20 minutes.

A

ctivate the function by holding the

tL

and

pINC

switches
simultaneously while turning the rotary knob to the OFF
position.

15

FIX and POS

(

MGRS Format shown)

day of week & time

gridzone
square & coordinate
altitude & accuracy

16

FIX and POS

The same position information is displayed when the rotary
knob is set to FIX or POS, but FIX conserves battery use by
automatically cutting off power after a time interval.

•

When position fixes are in progress, the time interval is 30

seconds.

•

If position fixes are not yet being performed (as when the

TRIMPACK

is first turned on),

up to 5 minutes are allowed to
obtain a position fix. During the last 30 seconds, a countdown
message is shown on the top line of the screen. Moving the
rotary knob to a different position stops the countdown.
Moving the knob back to FIX restarts the time interval.

The information contained here and on the next 4 pages
applies to both the FIX and POS modes.

Line 1 of the display shows the day of the week and the time
(a 24-hour clock is used) in either UTC or local time. Local
time is not labeled. Lines 2 and 3 show the position coor­dinates in the selected system (DMS, DM., UTM, or MGR).
Line 4 shows the altitude in meters or feet and an estimated
accuracy indicator.

ACCURACY INDICATOR

The accuracy figure is rounded to one of the following

values:

(Metric)

± 30m

± 100m

± 300m

± 1000m

±***

(English)

± 100ft

± 300ft

± 1000ft

± 3000ft

±***

(Nautical)

± 100ft

± 300ft

± 1000ft ± 3000ft

± ***

*** Indicates a value larger than 1000m or 3000ft

When the TRIMPACK is not doing position fixes, the most
recent position fix remains displayed and the accuracy indicator
is replaced by the blinking message OLD.

17

day of week & time
latitude
longitude
altitude & accuracy

1

10

100

1000

10000

Altitude Entry

+

NOTE: Altitude cannot be entered if

TRIMPACK

is

performing position averaging.

Example:

To set altitude to 4200 feet:

•

move to ± position and toggle to +

•

move to 10,000 position

•

if it already contains a value, set it to 0

•

if it is already at 0, ignore it

•

move to 1,000 position and set it to 4

•

move to 100 position and set it to 2

•

if either the 10 or the 1 position already contains a value,
set it to 0; if it is already at 0, ignore it

18

FIX and POS

(DMS format shown)

FIX and POS

2-D/3-D OPERATION

In normal operation, the

TRIMPACK

uses signals from 4
satellites to provide position fixes in 3 dimensions including
altitude. If only 3 SVs are available, the calculated positions
are 2 dimensional (no altitude); the labels for data items
related to altitude flash alternately with the message 2-D. In
this case, the accuracy of the fix depends on an accurate
estimate of the altitude, whether from the previous 3-D
solution or operator entry. The altitude shown should be
verified or changed by the user.

If the

TRIMPACK

has been receiving signals from 4 SVs and
loses contact with one of them, it switches from 3-D to 2-D
operation. If you do not enter a new altitude value within 30
minutes, or if you move more than about 1 mile from the
position of the last 3-D fix, the position labels flash to
indicate that you should enter an altitude. When 3-D fixes
resume, the

TRIMPACK

resumes display of the GPS-

calculated altitude.

ENTERING ALTITUDE

If the

TRIMPACK

is providing 2-D fixes, you must manually
enter an altitude. The altitude contains a 5-digit number
preceded by a sign to indicate above (+) or below (-) sea
level. Select the item by using the

tL-Ru

switch.

Change to the proper sign by pressing the

pINC

switch, then

use the

Ru

switch to move to the first non-zero digit and

tog-

gle in the desired value. If the remaining digits are

zeroes,

you are done; if other values are required, continue

with the

Ru

and

pINC

switches until all non-zero values are

displayed.
Only altitudes between -500m (-1600ft) and +20000m

(65000ft) are allowed.

19

averaging indicator

number of points

averaged

FIX and POS

Averaging

20

FIX and POS

AVERAGING

The Averaging function averages each new position fix
with

previous fixes to obtain a more accurate position. The

TRIMPACK must

remain stationary during averaging.

When Averaging is enabled

(see OPS mode, page

33), the

top and bottom lines of the FIX and POS mode screens are
modified. The label AVG appears in the top left corner

to
indicate that position fixes are being averaged; on the
bottom line, the accuracy indicator is replaced with the
number of position fixes averaged since the function was
enabled.

CAUTION

If the TRIMPACK is in motion, averaging should be
turned off. Averaged position fixes are only

meaningful while stationary.

21

3 destination wpts
azimuth
range
vertical difference

22

R+A

23

R+A

The R+A (Range & Azimuth) knob position displays the
range, azimuth, and vertical distance from your present
position to any 3 of the 26 waypoints (A-Z) on a single
screen.

You can display any waypoint in any of the 3 positions. Use
the tL-Ru switch to select the waypoint letter and the

pINC-DECq switch to change it. The TRIMPACK

recalculates and displays the new range, azimuth, and
vertical displacement to the selected waypoints.

The range is the Great Circle distance from the present

position. The vertical height difference can range from 0 to
9999 feet or meters. When a range or vertical displacement
exceeds 9999, an asterisk (*) is displayed. The azimuth can
be displayed in mils, degrees, or radians (selectable as
described on page 39) and can be corrected for local
magnetic variation.

If the

TRIMPACK

is not doing position fixes, the R+A label

alternates with the word OLD. If the

TRIMPACK

is in the

Averaging mode, the R+A label alternates with AVG. If the

TRIMPACK

is performing 2-D fixes, the "vrt" label alternates

with "2-D."

24

NAVIGATION with TRIMPACK

The figure below shows how the present position is used to
derive the range (rng) and azimuth (azm) to the destination
and how the velocity is used to find the relative steering
angle.

When a "from" waypoint is specified, the cross-track error

(xte)

is calculated as the perpendicular distance from the
unit's position to the straight line track between the source
and destination.

NAVIGATION with TRIMPACK

The figure below shows how the vertical (3-D) data from
position and velocity is used to derive the vertical difference

(vrt),

slant range

(srg),

and relative climb angle.

25

Intended Track

26

destin. & starting wpts
relative steering angle*
range & azimuth
cross track error

*NOTE: If the

TRIMPACK

is stationary, the steering angle is
not computed. The last steering angle is displayed,
but is blinking.

While entering "From" waypoint:

NAV

Pioneer

trigger to search waypoints alphabetically

destination wpt & label
relative steering angle

*

range & azimuth

NAV

The NAV (Navigation) knob position displays data to help you
navigate from your present position to another position. One of
4 navigation screens can be used, depending on your specific
application.
When you select the NAV position, the TRIMPACK
automatically returns to the most recently used screen format. If
you wish to use a different screen, use the <more> trigger to
select the desired screen.
In each navigation screen, you need only to enter the
destination waypoint. The TRIMPACK automatically displays
the data you need to navigate to that point from your present
position.
On all four screens, if the TRIMPACK is not doing position fi-

xes, the TO: label alternates with the word OLD. If the

TRIMPACK is in the Averaging mode, the TO: label alternates

with AVG.

Pioneer Mode: This display provides the basic information
required when you are traveling to your destination on foot.
Only your selected destination waypoint and label, relative
steering angle, range, and azimuth are displayed.

Intended Track Mode: This display format assumes a scenario

in which you wish to cross an area on a narrowly defined path.
You must enter both a destination waypoint (TO:) and a starting
waypoint (FR:). The starting waypoint may be your present
position (indicated by an *); the label Pos-at-start appears. Then
the relative steering angle, range, azimuth, and cross-track error
are shown. The distance your present position is to the left or
right of the intended track is indicated by xte(L) or xte(R). XTE
is shown in feet or meters if it is less than 2400 ft (600 m), or in
miles, kilometers, or nautical miles for longer distances.

27

Vehicle Navigation

*NOTE: See NOTE an page 26.

destination waypoint

&

time to go

relative steering angles*
slant range & azimuth
vertical difference

destination waypoint

&

time to go
vel & course over ground
range & azimuth
vertical difference

28

NAV

3-D Homing

Alphabetic Search: On all NAV and WPT screens, an

"up/

down" arrow symbol indicates that you can scroll

through the

waypoint labels alphabetically in either direction.

Use the

tL-

Ru

switch to select the up/down arrow and use

the

pINC-

DECq

switch to scroll through the labels. The

Pioneer NAV

screen

(page 26) shows

an example of the

up/down arrow

symbol in line 1.

29

NAV

3-D Homing Mode: A typical user might be a parachutist
who requires 3-dimensional information. When you select a
waypoint, its label and an up/down arrow symbol briefly
replace the time-to-go data. After entry, the time-to-go

display

reappears, along with the horizontal and vertical

steering

angles, slant range, azimuth and vertical distance to

the

destination waypoint.

Vehicle Navigation Mode: Line 1 shows the destination
waypoint and its associated label during entry; time to go
replaces the label after entry of the selected waypoint. Line

2

shows your velocity and course. The range and azimuth to

your
destination are shown on line 3, and line 4 shows the
difference in altitude between present position and your
destination.

If the position fixes are in 2-D, the vrt label for vertical

distance

(on 3-D Homing and Vehicle Navigation displays)

alternates

with "2-D." Negative vertical distances indicate that

the

destination waypoint has a lower altitude than your

current

position.
Refer to the

TRIMPACK

Specification, Installation, and

Reference Manual,

Part Number 13498, for additional NAV

Mode information.

DMS Format

DM. Format

UTM Format

MGRS Format

30

WPT

trigger to search waypoints alphabetically

wpt designator & label

latitude
longitude
altitude

wpt designator & label
latitude
longitude
altitude

wpt designator & label
grid & easting
zone & northing
altitude

trigger to save changes
made to waypoint

wpt designator & label
gridzone
square & coordinate
altitude

trigger to copy

present position

31

WPT

The WPT (Waypoint) knob position enables you to display

or alter data to define up to 26 waypoints (A-Z). The
waypoints are displayed in the chosen coordinate system. A

waypoint that contains no data has an ---empty--- label.

When you alter a waypoint, an <

enter>

trigger appears in
the bottom right corner of the screen. To save the changes,
select the

<enter>

trigger and press

pINC

. If an error is

detected, the waypoint is not saved and an error message is
displayed.

Waypoint Labels:

The label is up to 12 characters which

describe or identify the waypoint. You can create the label
by selecting characters

and

scrolling through the alphabet

and numbers by using the

pINC-DECq

switch.

Saving a Fix: When the

TRIMPACK

is performing position
fixes, the fix can be saved into a waypoint by selecting the
<fix> trigger (at the bottom right corner of the display) and
pressing

pINC

. The data from the present fix is stored in the
displayed waypoint if it is empty. If the waypoint is not
empty, the data is stored in the next empty waypoint, which
is then displayed.

The last 6 characters of the label are changed to reflect the

UTC time (time is always displayed as UTC time in this
mode) and date (hh [hours], mm [minutes], and dd [day of
the month]). If no empty waypoints are available, an error
message is displayed and the fix is not stored.

COPY to FIX

32

source and destination
copy waypoint trigger
waypoints to clear
clear waypoint trigger

OPS

COPY and CLEAR FUNCTION

source and destination
copy waypoint trigger
date/ time for Copy to

"fix"

33

OPS

The OPS (operations) knob position provides functions that
are useful in support of waypoints and other controls. The
four screens are accessed by the <more> trigger.

COPY FUNCTION

The source waypoint cycles from A through Z and FIX (the
most recent position calculated by the receiver). When you
select the <copy> trigger and press the

pINC

switch, the
data from the source waypoint or FIX information is copied
to the selected waypoint. If the destination waypoint already
contained data, the old data is overwritten. The destination
waypoint is automatically incremented to the next waypoint
for ease in copying data to multiple waypoints.

The destination waypoint also cycles from A through Z and
FIX. When FIX is the destination, date and time fields will
appear on the third line with the current date and time from
the internal clock. You can modify the date and time if
necessary and use the <copy> trigger to initialize the

TRIMPACK

acquisition algorithm.

CAUTION

The "COPY into FIX" function restarts the

TRIMPACK: it

should be used with great care.

TRIMPACK

DOES NOT require initialization.

CLEAR FUNCTION

The clear function on the third and fourth lines allows
you

to clear any contiguous range of waypoints.

The function is performed by selecting the <clear> trigger
and pressing

pINC

.

DIST Function

AVERAGING Function

OPS

CALC Function

waypoint loaded with

result & starting wpt
entered slant range
entered azm & funct. trig.
entered vertical angle

starting waypoint
ending waypoint
range & azimuth
vertical difference

averaging on/off

number of positions

averaged & restart trig.

34

35

OPS

CALC FUNCTION

The Calculate function is used to generate a position from
any one of the stored waypoints and a slant range,
azimuth,

and vertical angle input; the result is stored in

a selected

waypoint. The Calc function also accepts "fix"

data as the

source position. The new position values will

overwrite any

previous data in the result waypoint.

DIST FUNCTION

The Distance function is used to find the range, azimuth,
and vertical difference between any two selected waypoints.
"Fix" also is accepted in the distance calculations, enabling
observation of a reverse course from a waypoint back to the
present position.

AVERAGING FUNCTION

This function can be toggled ON and OFF by selecting the
field and then using the

pINC

switch. Use the <restart>
trigger to restart the averaging process. Averaging requires
the unit to be stationary. Turn off this function when not in
use.

(See page 21 for more information.)

satellite status

condition messages
battery usage
antenna in use

STS

Status Screen

14

37

STS

The STS (Status) knob position:

•

provides continually updated status information concerning

GPS reception and condition of the

TRIMPACK

(Status

screen)

•

allows you to select the reference datum, operating

parameters, and the coordinate system to be used for the
mission (Setup Screen)

•

enables communication control between

TRIMPACK

and a

data loader or another

TRIMPACK

(Dataport Control

Screen)

The 3 screens are linked by the <

more >

trigger.

STATUS SCREEN

The Status screen shows GPS and

TRIMPACK

status.

The first line shows the number of SVs currently being

tracked by the

TRIMPACK;

the number may be 0 if there are

no visible or usable satellites.
The GPS status message shows the condition of the recep-

tion of the GPS data from the SVs. Possible conditions
include GPS

OK, GPS N/A

(not enough visible or usable

SVs),

GPS BAD

(bad geometry, SV health, or some

other

reason why position fixes are not possible),

RECEIVER

FAULT

(service required), or

MEMORY RESET

(memory erase

function used).

Line 3 shows hours and minutes of operation of the batteries
since the battery pack was last attached.

The last line shows whether the INT (internal) or an

EXT

(external) antenna is being used.

Setup Screen

38

STS

datum
local time offset

distance units & azm style
coord. style & azm mode

STS

SETUP SCREEN

This screen allows you to set output parameters according to
your requirements. To change any of the parameters, use the

tL-Ru

switch to select the appropriate item, and use the

pINC-DECq

switch to make the selection.

Datum: Line 1 shows the datum selection. You may select
any of the 50 datum choices built into the unit

(see page 44

for the complete list).

For

TRIMPACK

position fixes to agree

with a map, the

TRIMPACK

datum must match the datum

shown on the map.

Time: Line 2 enables you to select either UTC or LOC time

and to enter the local time offset value (LOC = UTC ±
offset).

Units: Line 3 identifies the units in which distances
(METRIC, ENGLISH, or NAUTICAL) and angles (DEGS,
MILS, or RADS) are displayed.

Mode: Line 4 shows the selected coordinate system (DMS,
DM., UTM, or MGR) and azimuth setting for either True

or

Magnetic North (Tr or MG).

39

STS

Dataport Control Screen

data port protocol name

waypoint sending controls

line 2 can be changed to:

or

40

DATAPORT CONTROL SCREEN

The dataport control screen enables you to control
communication between the unit and a data recorder or
another

TRIMPACK.

Data Port:

The data port name can be set to one of three

modes:

TRIMPACK

(the normal setting), OFF, or TPACK-2.

When set to

TRIMPACK,

the unit can communicate with

another

TRIMPACK.

The OFF setting allows silence on the
dataport. The TPACK-2 selection is used to send unique
data for post-processing differential corrections and is not
used in normal operation.

Line 2:

The first field on this line enables you to select the

type of data to be sent to another unit: waypoints, almanac
data, or setup parameters. When sending waypoints, the
range of waypoints (for example A - D) can be selected; only
waypoints within that range that contain data are transmit-

ted. The selected data is sent when the <send> trigger at

the end of line 2 is activated.

NOTE

•

No empty waypoints may be included in the
range of waypoints to be transferred from a

3-channel

TRIMPACK

to a 2-channel

TRIMPACK.

(P/N 12545-00).

•

Only the first 26 waypoints can be transferred

from a

TRIMPACK

with the 1089-Waypoints option

to a standard 26-waypoint

TRIMPACK.

41

STS

Standard Battery Pack

Rechargeable NiCad

Extended-Life Battery Pack

BA5800 Lithium Batteries (2)

MAINTENANCE

42

43

MAINTENANCE

Operator-level maintenance of the

TRIMPACK

is limited to

replacement of batteries.

WARNING

Lithium batteries can be hazardous if not properly
handled. Observe the WARNING printed on page iii.

To remove the battery pack from the

TRIMPACK:

1.

Loosen latch at right-hand rear of

TRIMPACK.

2.

Pull latch end of battery pack away from back of

TRIMPACK,

and slide other end out of the retaining clip.

Remove the old batteries and process them for disposal.
Install fresh batteries by placing the contact end of the
BA5800 into the battery pack first, and then pushing the
other end in.

To reinstall the battery pack:

NOTE

The external power connector mating cap must
remain in place during this procedure So the battery
usage timer will reset to 0:00.

1.

Make sure the edge of the battery pack and the mating

0-ring in the unit are free of dirt.

2.

Slide the end of the battery pack into the retaining clip

on the left-hand side of the TRIMPACK case.

3.

Carefully seat the pack onto the case and push it into

place.

4.

Secure the latch on the right-hand side of the case.

44

DATUM SELECTIONS

Maps are drawn based on a mathematical model of the
earth's shape. This is called a datum. For the

TRIMPACK's

displayed position to agree with corresponding positions on
a map, the datum must be selected on the

TRIMPACK

Setup
Screen (see page 39) to be the same as the datum used to
draw the map. The map's datum is usually indicated in the
map legend or title block.

The following Datums are included in the

TRIMPACK.

Each

name is shown as displayed on the screen.

WGS-84
WGS-72
Adindan
ARC
1950
Australian'84
Bukit Rimpah
CampAreaAstro
CorregoAlegre
Djakarta
European 1950
Geodetic 1949
Ghana
G.Britain '36*
Guam 1963
G. Segara
G. Serindung
Herat North
Hjorsey 1955
Hu-Tzu-Shan
Indian
Ireland 1965
Kertau Malay**
Liberia 1964
Local Astro
Luzon

Merchich
Montjong Lowe
Nigeria (Minna)
NAD-27,CONUS

Alaska/Canada+
NAD-83

Maui, Old HI (Hawaiian)
Oahu, Old HI (Hawaiian)
Kauai, Old HI (Hawaiian)
Qornoq

SAD-69
SierraLeon'60
S.America '56 (provisional)
Prov.CorregoAlegre(S.American)
Campolnchausp (S.American)
Chua Astro (S.American)
Yacare (S.American)
Tananarive'25+ +
Timbalai
Tokyo
Voirol

Indian SPCL

(

MGRS)

Luzon SPCL

(

MGRS)

Tokyo SPCL

(MGRS)

WGS-84 SPCL (MGRS)

*

Ordnance Survey of G. Britain 1936

**

Kertau (Malayan Revised Triangulation)

+

North American 1927 (Alaska and Canada)

+ +

Tananarive Observatory 1925

Appendix A.

HAVE-QUICK IIA/PULSE-PER-SECOND

TIMING OUTPUT OPTION

This appendix describes the additional capabilities and

features

of the

TRIMPACK

when equipped with the Have-

Quick/Pulse-

Per-Second option. Units with this option are

identifiable by

the black (instead of olive) rotary knob on the

front panel. This

option provides additional timing outputs

from the

TRIMPACK

dataport: the Have-Quick output or the

one-pulse-per-second

(PPS) timing output. The desired

output is selected on the

Dataport Control screen. (For

additional detailed information,

refer to the

TRIMPACK

Specification, Installation, and

Reference Manual,

Trimble

part no. 13498.) The timing

output option affects two of the

three STS (status) screens.

They are described as follows:

Status Screen

satellite status

GPS & timing output

messages

battery usage

antenna in use

TFOM/Timing

In the Have-Quick mode, TFOM (time figure of merit) is
displayed. This figure ranges from 4 (better than 1

microsecond

accuracy) to 8 (less than 10 milliseconds/

unknown). When

satellite signals are lost, timing accuracy

degrades gradually. In

the Pulse-Per-Second mode, "Timing:

OK" indicates that the

timing is derived from GPS solutions.

If not, "Timing: n/a" is

displayed.

45

Dataport Control Screen

dataport protocol name
dataport send control
timing mode control

TIMING OUTPUTS

In the Have-Quick option, line 3 provides a selection of
timing outputs.

Off: No timing output.

Have-Quick or Pulse-Per-Second:

Timing output is based

on GPS solutions.

Static HQ or Static PPS: Timing output is

based on 1 SV
and an accurate known position (previous GPS solutions or
user input).

Static Timing

In the static timing modes,

TRIMPACK

computes only time

(not position fixes) using only 1 SV. The unit automatically
selects the optimum

SV for this purpose.

NOTE

Static timing mode should be used only when the
accurate position is known. The

TRIMPACK

will not
assume a position and the time measurement will not
be valid until:

•

the unit has performed a position

fix in normal

mode and then is switched to static

mode; OR

•

the user has used the COPY function to store an

accurate waypoint into the FIX.

When the unit is operating in static timing mode, STATIC
is displayed on the main STATUS screen, as well as on the

POS and FIX screens; also, the letters STA alternate with
the R&A and TO: labels in the top-left corner of the R&A
and NAV screens, respectively. Altitude cannot be entered
manually in the static timing mode.

46

4 1

Appendix B.

1089-WAYPOINTS OPTION

This appendix describes the additional capabilities and

features

of the

TRIMPACK

unit when equipped with the 1085

Waypoints option.

WAYPOINTS AND THEIR DESIGNATORS

The 1089-Waypoints option increases the storage capacity of
the

TRIMPACK

from 26 to 1089 waypoints. All waypoints on
all screens are identified by a two-character designator (AA
AB, etc.), rather than the one-character designator shown
throughout this manual. All alphabet and numeric character
are used except for I, 0, and 0 (zero). The following
screen

illustrates the two-character waypoint system.

COPY and CLEAR FUNCTION

source and destination
copy waypoint trigger
waypoints to clear
clear waypoint trigger

DATA TRANSFER

Only the first 26 waypoints (AA to A2) can be copied from

a

1089-waypoint

TRIMPACK

to a 26-waypoint

TRIMPACK

TRIMPACK

WARRANTY RETURN PROCEDURES

3.

Name/Organization/Address/Phone:

GOVERNMENT OPERATIONS

TRIMBLE NAVIGATION LTD.

617 NORTH MARY AVENUE

SUNNYVALE, CA 94086

1.

Call Trimble Navigation, [phone] from outside
California or [phone] from inside California, to
request an RMA number. Please have the

TRIMPACK

serial number ready to give to the Customer Service
representative.

5.

Package the equipment and ship prepaid with this page

to:

2.

Write the RMA number here

4.

Complete the Warranty Return Form on the reverse

side

of this page.

TRIMPACK

WARRANTY RETURN FORM

RMA No.:
Serial No.:
Model/Part No.:

Ph

ysical Damage:

So

ftware:

Screen in Use:

Operation Attempted:
Problem:

Operation/Electrical:

Turn-on/Power:
Improper Solution:
Specify Position:
Datum in use:

Operating Conditions:
Other:

Full description of problem (please be as specific

as p

ossible):

QUICK REFERENCE GUIDE

TRIMBLE NAVIGATION LIMITED

645 North Mary Avenue

P.O. Box 3642

Sunnyvale, California 94086

[phone]
800-TRIMBLE

Telex: 671393 TRIMBLE UW