Trimble Navigation PDLUH35 Positioning Data Link User Manual PDL User s Guide Outline
Trimble Navigation Ltd Positioning Data Link PDL User s Guide Outline
Users Manual
PDL
User's Guide
Revision 04
December 2004
Pacific Crest Corporation
990 Richard Avenue, Suite 110
Santa Clara, CA 95050
(408) 653-2070
(408) 748-9984 Fax
PN: M0052204
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iii
NOTICE
PACIFIC CREST CORPORATION MAKES NO WARRANTY
OF ANY KIND WITH REGARD TO THIS MATERIAL,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. Pacific Crest Corporation shall not
be liable for errors contained herein or for incidental
consequential damages in connection with the furnishing,
performance, or use of this material.
This document contains proprietary information that is protected
by copyright. All rights are reserved. No part of this document
may be photocopied, reproduced, or translated into another
language without the prior written consent of Pacific Crest
Corporation.
The information contained in this document is subject to change
without notice.
CAUTIONS AND WARNINGS
9
Throughout this manual this symbol is used to indicate
caution or warning. Please pay particular attention to
these items to assure safe and reliable operation of
your radio modem product.
iv
© Copyright 2004 Pacific Crest Corporation. All rights reserved.
Reproduction, adaptation, or translation of this manual is
prohibited without prior written permission of Pacific Crest
Corporation, except as allowed under the copyright laws.
Trimtalk and Trimble are trademarks of Trimble Navigation Ltd.
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TABLE OF CONTENTS
Notice...........................................................................................iii
Cautions and Warnings ...............................................................iii
Table of Contents ........................................................................ v
Introduction .................................................................................. 1
Welcome .................................................................................. 1
Scope ....................................................................................... 1
Note Concerning this Guide..................................................... 1
Features and Benefits.................................................................. 3
Setting Up The PDL High Power Base........................................ 5
Overview of PDL High Power Base Radio Modem.................. 5
PDL High Power Base System Setup...................................... 9
Setting Up The PDL Low Power Base/Repeater....................... 15
Overview of PDL Low Power Base Radio Modem ................ 15
PDL Low Power Base Setup.................................................. 18
Setting Up The PDL Rover ........................................................ 21
Overview of PDL Rover Radio Modem.................................. 21
PDL Rover Setup ................................................................... 24
Tips and Techniques for Best Performance .............................. 28
Antenna.................................................................................. 28
Power Supplies ...................................................................... 28
How to Use AutoRover™....................................................... 28
How to Use AutoBase™ ........................................................ 29
Equipment Care ..................................................................... 30
Error Codes............................................................................ 30
FCC Rules and Regulations ...................................................... 33
Licensing Requirements ........................................................ 33
Equipment Compliances ........................................................ 33
Being Part of the RF community ............................................ 34
Automatic Station Identification.............................................. 35
vi
Carrier Sense Multiple Access (CSMA)................................. 35
Service and Support .................................................................. 37
Contacting Pacific Crest Corporation..................................... 37
Warranty .................................................................................... 39
Two-year Limited Warranty.................................................... 39
Exclusions .............................................................................. 39
Warranty Limitations .............................................................. 39
Appendix A - Pin-outs and Connectors ..................................... 43
PDL Base ............................................................................... 43
PDL Rover.............................................................................. 43
Antenna.................................................................................. 43
Appendix B - Technical Specifications ...................................... 45
General .................................................................................. 45
Radio...................................................................................... 45
Modem ................................................................................... 46
Environmental ........................................................................ 47
Table of Figures
Figure 1 - PDL High Power Base Front Panel............................. 5
Figure 2 - PDL High Power Base Rear Panel ............................. 8
Figure 3 - PDL High Power Base System Setup....................... 10
Figure 4 - PDL Low Power Base .........................................…...16
Figure 5 - PDL Low Power Base Setup….……………………….19
Figure 6 - PDL Rover……………………………………………….22
Figure 7 - PDL Rover Setup ……………………………………….25
Figure 8 - PDL Data/Power Connectors…………………..……...41
INTRODUCTION
Welcome
Thank you for purchasing the Positioning Data Link™ (PDL™)
for use with your survey system. The PDL is an advanced, high
speed, wireless data link that is designed specifically for
GPS/RTK applications. Your success in using the PDL is our
primary goal. We stand behind our product with expert support
and service. We welcome your comments and questions.
Scope
This guide introduces the PDL Base and rover radio link systems
used for GPS and RTK applications. It is written for the first-time
user, and gives details concerning system setup, operation and
maintenance. We urge you to take the time to review this short
manual completely prior to setting up your system.
Note Concerning this Guide
We believe that the PDL system provides the best value and
performance for the user. As such, we provide our equipment in
complete turnkey systems, including all of the items necessary
for operation with your GPS.
You may have purchased your PDL from a third party. On
occasion, the bundled product provided by these sources may
differ from the kits provided directly from Pacific Crest
Corporation. If this guide does not accurately reflect the
equipment that you received, please contact your supplier for
specific instructions concerning the setup of items that differ.
2 Introduction
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FEATURES AND BENEFITS
Fast Over-the-Air Data Rate – 19,200 bits per second
• Reduced latency provides better GPS position information
• Lower power consumption allows longer field operation
• Greater throughput handles both GPS and GLONASS
Enhanced User Interface – Channel display and buttons
• View and change radio channel
• Monitor charge status and other parameters
Intelligent Protocols – Forward Error Correction (FEC),
AutoBase™ and AutoRover™ technology1
• FEC provides improved noise immunity and range
• Base automatically selects channel with AutoBase
• Rover automatically locks to base with AutoRover
Rugged Construction – Designed specifically for GPS RTK field
surveying
• Double shock mounted electronics improve reliability
• Water tight operation stands up to bad weather conditions
• Built-in mounts simplify tripod and range pole mounting
Backward Compatible – Interoperable with RDDR, RFM and
Trimble® products
• Benefit by the latest technology with your existing equipment
• Facilitates GPS equipment mix and match
• Provides upgrade path for existing installations
1 Patents Pending
4 Features and Benefits
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SETTING UP THE PDL HIGH POWER BASE
Overview of PDL High Power Base (PDL HPB) Radio Modem
Front Panel
Digital Display
TX Indicator
RX Indicator
Channel Change Pushbutton
AMP POWER
Indicator
ON / OFF Indicator
ON / OFF Pushbutton
Figure 1 - PDL High Power Base Front Panel
Buttons
The ON/OFF button is used to turn the PDL HPB station on and
off. Turn the unit on by pressing the ON/OFF button and holding
it until the channel display indicator is lit. Turn off the PDL HPB
by pressing the ON/OFF button until the display goes blank.
There is a one-second turn-off delay in the power button to
prevent inadvertent turn off.
6 Setting Up the PDL High Power Base
The CHANNEL button is used to display and change the
channel. Press the CHANNEL button momentarily to display the
selected channel. To change the channel, press the CHANNEL
button once to light the display, and then again to change the
channel.
Use the CHANNEL button to select the “b” setting. With “b”
selected, the PDL HPB will be placed in AutoBase mode. This
mode selects the channel for transmission automatically.
Display
The seven-segment numeric display is used to indicate the
channel or mode selection. To conserve power, the display is
only lit for a short time following the pressing of the CHANNEL or
ON/OFF buttons. Channel selections range from Channel 0 to
Channel 15. Two digit channel numbers are displayed by
alternately flashing a 1 followed by the second digit.
The seven-segment display also has a decimal point to the lower
right of the number. The decimal point is lit to indicate that the
channel selection was done automatically with AutoRover or
AutoBase.
Indicator LEDs
The power LED has two purposes – first, to indicate that the unit
is powered, and second, to indicate the level of charge for the
power supply. The power LED will blink to indicate that the
base station battery is at or below 10 Volts and may require
charging.
PDL User's Guide 7
The amplifier power LED indicates the RF power output level
selected. When lit, the amplifier power LED indicates that the
RF output power is set to high. When blank, the amplifier power
LED indicates that the RF output power is set to low.
The TX LED indicates that the PDL HPB is actively transmitting.
In most RTK applications, the base station TX LED will blink
once per second.
The RX LED indicates that the PDL HPB is receiving an RF
carrier signal. If the RX LED is lit for extended periods of time, or
continuously, then another radio station is operating on the same
frequency. This competing RF source may interfere with the
GPS RTK system, and may require that you change channels for
better performance.
Rear Panel
Data Connector
A five-pin circular LEMO style receptacle accepts both
programming and GPS model specific cables. The supplied
cables are labeled “RADIO” on the end that plugs into the base.
Align the red dot on the plug with the red dot on the receptacle
and push until a clicking sound is heard.
To remove the cable, grasp the blue cable over-mold, and retract
the locking mechanism by pulling the knurled barrel of the plug
toward your palm.
8 Setting Up the PDL High Power Base
Amp Power Selector Switch
Antenna Connector
Data / Power Connecto
r
HOT
SURFACE
CAUTION
Figure 2 - PDL High Power Base Rear Panel
RF Connector
A BNC jack accepts the BNC male plug coming from the
antenna mount.
Enclosure
The PDL HPB enclosure is rugged extruded aluminum with
integrated heat sink fins. The enclosure is painted with a
weather resistant powder coat blue paint. Black bumpers are
integrated with front and rear gaskets to provide shock protection
and watertight operation. The enclosure is not designed to
withstand submersion and must not be allowed to sit in standing
water.
PDL User's Guide 9
9
Warning: The PDL HPB enclosure and heat sink may
become very hot during operation. This is normal
depending on the ambient temperature, RF power
selection and transmission duty cycle. Turn off the unit
and allow it to cool prior to handling.
PDL High Power Base System Setup
Antenna and Antenna Mount
Begin your PDL HPB station set up by screwing the Antenna
Mount to the top of the Tripod Antenna Mast. You may want to
leave the mount permanently attached to the mast and avoid this
step in the future.
Next, screw the Antenna on the Antenna Mount. We
recommend inspecting the antenna center push-pin contact to
ensure that it makes good contact with the antenna mount. A
good antenna connection is critical to system performance.
Tripod Antenna Mast
With the Antenna Mount and Antenna connected, extend the
legs of the Tripod Antenna Mast and set up the tripod on level
ground. Spread the tripod legs sufficiently to provide a stable
base.
10 Setting Up the PDL High Power Base
A
ntenna
A
ntenna Mount
Tripod Mast
Antenna Cable
To GPS Unit
Data / Power Cable
Battery Cable
To B a t te ry
Figure 3 - PDL High Power Base System Setup
9
Caution: Do not extend the antenna mast in conditions
of high wind or in situations where the uneven terrain or
other soil conditions provide an unstable base. Keep
the area surrounding the Tripod Antenna Mast clear
and exercise caution to prevent injury or damage to
property should the Tripod Antenna Mast fall.
Connecting the PDL HPB
The PDL HPB has a built-in tripod mounting bracket that allows
easy mounting to the tripod. Locate the mounting flange at the
top portion of one of the Tripod legs, and hook the PDL HPB in
place.
PDL User's Guide 11
Connect the antenna, GPS Data Cable and Battery Power Cable
as indicated in Figure 3. You are now ready to turn-on the
system.
Configuring the GPS Reference Station
Refer to the GPS receiver model specific addendum that is
included with this manual for specific instructions on configuring
your GPS reference station for optimal performance with the
PDL. Detailed instructions are also available on our web site at
www.paccrst.com.
PDL Default Settings
The PDL Base is configured at the factory with settings that have
been determined to provide excellent system performance. Use
the PDLCONF software provided with the product to view and
change configuration settings.
9
Note: Please refer to the PDLCONF help menu system
for detailed information concerning the settings.
12 Setting Up the PDL High Power Base
The following table shows the default factory settings:
Factory Defaults
Setting PDL Base PDL Rover
Channel mode AutoBase AutoRover
GPS Port Data
Rate
38.4 k Baud 38.4 k Baud
Parity None None
Mode Transparent with
EOT timeout
Transparent with
EOT timeout
EOT value 5 5
Retries 3 3
Link rate 19.2 kbps (raw data) 19.2 kbps (raw data)
Modulation 4-level FSK 4-level FSK
FEC Enabled Enabled
RF Output Power 0.5 - 5 0.5 - 35
Data Scrambling Enabled Enabled
Digisquelch Low High
Break to
command
Off Off
TX ACK timeout 0.10 0.10
CSMA Enabled Enabled
Digidelay 0.0 0.0
Repeater Off Off
Address (local) 0 0
Address (dest) 255 255
Table 1 - PDL Factory Defaults
PDL User's Guide 13
Battery Care
Base station kit shipments to North America include a 33 AHr
deep-discharge gel lead acid battery. This battery provides all
day operation with ample power for both the PDL and the GPS
RTK reference station.
International Shipments
For shipments outside of North America, we include battery bag,
power cables with fuse, and hardware for a user supplied
battery. Select a deep discharge battery of the type designed for
golf cart or wheel chair operation, and that has a capacity of 33
AHr or greater. Batteries designed for automotive use will be
damaged by the repetitive discharge/charge cycles and should
be avoided.
Charging
The supplied charger provides two-stage charging and should be
connected to the battery following every full day of operation to
assure good battery life and performance. The first stage quickly
charges the battery to capacity and the second stage trickle
charges the battery to maintain a full charge.
If the battery is maintained in storage for an extended length of
time, it is important to periodically charge the battery as
extended time in a discharged state may damage the battery.
14 Setting Up the PDL High Power Base
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SETTING UP THE PDL LOW POWER
BASE/REPEATER (PDL LPB)
Overview of PDL LPB Radio Modem
Front Panel
Buttons
The ON/OFF button is used to turn the PDL LPB modem on and
off. Turn the unit on by pressing the ON/OFF button and holding
it until the channel display indicator is lit. Turn off the PDL LPB
by pressing the ON/OFF button until the display goes blank.
There is a one-second turn-off delay in the power button to
prevent inadvertent turn off.
The CHANNEL button is used to display and change the
channel. Press the CHANNEL button momentarily to display the
selected channel. To change the channel press the CHANNEL
button once to light the display, and then again to change the
channel. Release the CHANNEL button when the desired
channel is indicated.
The PDL LPB can be used as a base, rover or repeater. When
used as a base, you have access to AutoBase mode that will aid
in the selection of the channel. Use the CHANNEL button to
select the "b" setting. With "b" selected, the PDL LPB will be
placed in AutoBase mode. This mode selects the channel for
transmission automatically.
When used as a rover or repeater, you may wish to use
AutoRover mode. Press the CHANNEL button to select the “r”
16 Setting Up the PDL Low Power Base/Repeater
setting. With “r” selected, the PDL LPB will be placed in
AutoRover mode. This mode automatically selects the channel
being used by the PDL Base. If you are operating in an area
with more than one PDL Base station active, you should
manually select the channel of operation to assure proper
operation.
Antenna Connector (NMO thread) Antenna
RX Indicator
TX Indicator
Power On/Off Indicator
Digital Display
Channel Change Pushbutton
On/Off Pushbutton
Data / Power Connector
User Supplied Range Pole
(5/8 - 11 thread)
Figure 4 - PDL Low Power Base
PDL User's Guide 17
Display
The seven-segment, numeric display is used to indicate the
channel or mode selection. To conserve power, the display is
only lit for a short period following the pressing of the CHANNEL
or ON/OFF buttons. Channel selections range from Channel 0
to Channel 15. Two digit channel numbers are displayed by
alternately flashing a "1" followed by the second digit.
Indicator LEDs
The power LED indicates the power status and also provides a
low external voltage supply indicator. When lit, power is turned
on. The power LED will blink to indicate if the external voltage
supply is approaching the minimum value. If the power LED
does not respond to the ON/OFF button, then the level of the
external voltage supply should be inspected.
The RX LED indicates that the PDL LPB is receiving an RF
carrier signal from another PDL Base or from another source of
interference. During normal operation, the RX LED will flash at a
once-per-second rate indicating the transmissions from the PDL
Base. If the RX LED is on continuously, then a source of
interference may be impacting the ability of the PDL LPB to
receive data. Try repositioning the antenna, or you may need to
change to another channel at both the base and rover to reduce
or eliminate the interference.
The TX LED indicates that the PDL LPB is broadcasting. In
most GPS RTK applications, the TX LED will flash approximately
one time per second.
18 Setting Up the PDL Low Power Base/Repeater
Enclosure
The PDL LPB enclosure is a tough, impact resistant blue
polycarbonate with machined aluminum end caps. Black
bumpers with integrated gaskets provide the first level of shock
protection for the internal components. An additional isolation
system inside the enclosure reduces vibration impact to the
sensitive radio receiver board.
Antenna Mount
The integrated antenna mount provides an industry standard
NMO style RF connector that is compatible with a wide range of
mobile whip antennas.
Range Pole Mount
The bottom end cap is female threaded with 5/8-11 UNC that is
compatible with common range poles. The unit is easily
mounted in the place of a stand-alone antenna and eliminates
the need for an antenna cable.
PDL Low Power Base Setup
Antenna and Antenna Mount
Screw the Antenna on the antenna mount of the PDL LPB. We
recommend inspecting the antenna center push-pin contact to
make sure that it makes good contact with the antenna mount. A
good antenna connection is critical to system performance.
Range Pole or Tripod Side Bracket Mount
Before connecting any cables, screw the PDL LPB onto the
range pole (for tripod-top use) or tripod side mount bracket.
PDL User's Guide 19
To B at tery
Data / Power Cable
To GPS Unit
Tripod Top
Mount
Side Bracket
Mount
Figure 5 - PDL Low Power Base Setup
Connecting the PDL LPB
The PDL LPB is connected to the GPS RTK receiver using the
supplied cable. After connecting the cable, press the ON/OFF
20 Setting Up the PDL Low Power Base/Repeater
button. Use the CHANNEL button to select the channel of
operation, or select "r" for the AutoRover function or select "b"
for the AutoBase function. Refer to the How to Use AutoRover
and How to Use AutoBase sections of this manual for detailed
instructions concerning these features.
Configuring the GPS Rover
See the GPS receiver model addendum that is included with this
manual for specific instructions on configuring your GPS rover
for optimal performance with the PDL. Detailed instructions are
also available on our web site at www.pacificcrest.com.
PDL LPB Default Settings
Refer to Table 1 in Setting Up the PDL HPB for the default
factory settings of your PDL LPB.
SETTING UP THE PDL ROVER
Overview of PDL Rover Radio Modem
Front Panel
Buttons
The ON/OFF button is used to turn the PDL Rover modem on
and off. When not in use, the PDL Rover should be turned off to
conserve battery power.
Turn the unit on by pressing the ON/OFF button and holding it
until the channel display indicator is lit. Turn off the PDL Rover
by pressing the ON/OFF button until the display goes blank.
There is a one-second turn-off delay in the power button to
prevent inadvertent turn off.
The CHANNEL button is used to display and change the
channel. Press the CHANNEL button momentarily to display the
selected channel. To change the channel press the CHANNEL
button once to light the display, and then again to change the
channel. Release the CHANNEL button when the desired
channel is indicated.
Use the CHANNEL button to select the “r” setting. With “r”
selected, the PDL Rover will be placed in AutoRover mode. This
mode automatically selects the channel being used by the PDL
Base. If you are operating in an area with more than one PDL
Base station active, you should manually select the channel of
operation to assure proper operation.
22 Setting Up the PDL Rover
Antenna Connector (NMO thread)
Internal Battery Pack
Antenna
RX Indicator
Power On/Off Indicator
Digital Display
Channel Change Pushbutton
ON / OFF Pushbutton
Data / Power Connector
User Supplied Range Pole
(5/8 - 11 thread)
Figure 6 - PDL Rover
Display
The seven-segment, numeric display is used to indicate the
channel or mode selection. To conserve power, the display is
only lit for a short period following the pressing of the CHANNEL
or ON/OFF buttons. Channel selections range from Channel 0
to Channel 15. Two digit channel numbers are displayed by
alternately flashing a "1" followed by the second digit.
PDL User's Guide 23
Indicator LEDs
The power LED indicates the power status and also provides a
low battery indicator. When lit, power is turned on. The power
LED will blink to indicate that the internal battery requires
recharging. If the power LED does not respond to the ON/OFF
button, then the internal battery may be fully discharged and
must be charged prior to further operation.
The RX LED indicates that the PDL Rover is receiving an RF
carrier signal from the PDL Base or from another source of
interference. During normal operation, the RX LED will flash at a
once-per-second rate indicating the transmissions from the PDL
Base. If the RX LED is on continuously, then a source of
interference may be impacting the ability of the PDL Rover to
receive data. Try repositioning the antenna, or you may need to
change to another channel at both the base and rover to reduce
or eliminate the interference.
Enclosure
The PDL Rover enclosure is a tough, impact resistant blue
plastic with machined aluminum end caps. Black bumpers with
integrated gaskets provide the first level of bump protection for
the internal components. An additional isolation system inside
the enclosure reduces shock impact to the sensitive radio
receiver board.
Antenna Mount
The integrated antenna mount provides an industry standard
NMO style RF connector that is compatible with a wide range of
mobile whip antennas. With the internal antenna option, the top
24 Setting Up the PDL Rover
end cap NMO style mount is replaced with a 5/8-11 UNC stud,
allowing the PDL Rover to be used as part of the pole system
with a GPS antenna. See Figure 5.
Range Pole Mount
The bottom end cap is female threaded with 5/8-11 UNC that is
compatible with common range poles. The unit is easily
mounted in the place of a stand-alone antenna and eliminates
the need for an antenna cable.
PDL Rover Setup
Antenna and Antenna Mount
Screw the Antenna on the antenna mount of the PDL Rover. We
recommend inspecting the antenna center push-pin contact to
make sure that it makes good contact with the antenna mount. A
good antenna connection is critical to system performance.
Range Pole Mount
Before connecting any cables, screw the PDL Rover onto the
range pole.
PDL User's Guide 25
Data Cable (from GPS)
Range Pole
External Antenna
Figure 7 - PDL Rover Setup
Connecting the PDL Rover
The PDL Rover is connected to the GPS RTK receiver using the
supplied cable. After connecting the cable, press the ON/OFF
button. Use the CHANNEL button to select the channel of
operation, or select "r" for the AutoRover function. Refer to the
How to Use AutoRover section of this manual for detailed
instructions concerning this feature.
26 Setting Up the PDL Rover
Configuring the GPS Rover
See the GPS receiver model addendum that is included with this
manual for specific instructions on configuring your GPS rover
for optimal performance with the PDL. Detailed instructions are
also available on our web site at www.pacificcrest.com.
PDL Rover Default Settings
Refer to Table 1 in Setting Up the PDL Base for the default
factory settings of your PDL Rover.
Priority Power Selection
Power may be supplied externally to the PDL Rover if supported
by the connected GPS receiver. If power is available from the
GPS, the PDL Rover will first use the internal battery power until
depleted, and then switch to external GPS supplied power.
As the internal power is depleted to a level indicating that the
internal battery should be charged, the power LED begins
blinking at once-per-second. When the battery is depleted to a
very low level, the external power will be selected and the power
LED will "blip" a short flash at once-per-second.
Battery Care
The PDL Rover has an internal power supply that allows all-day
operation without taking power from the GPS. The light-weight
Lithium-Ion single cell battery can be recharged more than 1000
times, providing 3+ years of normal use. We recommend daily
charging for best battery life and performance.
PDL User's Guide 27
9
Warning: The internal Lithium-Ion battery is NOT
USER SERVICEABLE. Do not attempt to open the
enclosure or replace the battery. Lithium-Ion batteries
can be dangerous if mishandled.
The PDL Rover has a built-in charger that monitors and controls
the charging of the internal battery. The internal battery quickly
charges in less than 4 hours, and can be charged with the
supplied charger, or from an external 12 volt supply. We
recommend charging the internal battery at room temperature.
Charging is inhibited if the ambient temperature is below 0° C or
above 40° C.
9
Warning: The internal battery must not be subject to
operating temperatures below -20° C. Subjecting the
battery to conditions below -20° C will produce
permanent battery damage, and is not covered by the
warranty.
TIPS AND TECHNIQUES FOR BEST PERFORMANCE
Antenna
Antenna placement is critical for good performance. Range and
coverage is directly proportional to the height of the transmitting
and receiving antennas. Where possible, select a reference
station location that takes advantage of terrain to get the
transmitting antenna as high as possible.
Always use the telescoping antenna mast, and raise the antenna
as high as is practical and safe, given terrain and wind
conditions.
Power Supplies
Maintain batteries in a fully charged state. Both the PDL Base
and internal PDL Rover batteries will live longer if not allowed to
become completely discharged. We recommend routinely
connecting both the base and rover PDLs to their chargers on a
nightly basis. This will assure optimal performance and long
battery life.
How to Use AutoRover™
AutoRover is a feature that allows the PDL Rover to
automatically synchronize to the PDL Base. Enable this feature
by pressing the CHANNEL button until an "r" is displayed. After
selecting "r", you will note that the display will flash each
programmed channel for approximately 3 seconds, until a base
station broadcast is encountered. The PDL Rover will continue
to scan until a broadcast is found.
PDL User's Guide 29
The next time you turn on your unit, you will see an "r"
momentarily, after which the scan process will begin. To
manually select a channel for operation, press the CHANNEL
button until the desired channel is displayed.
With AutoRover the PDL Rover scans each programmed
operating frequency, looking for a signal from the PDL Base.
When a signal is found, the PDL Rover selects that channel for
operation.
9
Caution: Multiple PDL Base stations operating in a
single area may lead to the PDL Rover selecting the
wrong base. In such circumstances, we recommend
manually selecting the channel.
How to Use AutoBase™
AutoBase is a feature that allows the PDL Base to automatically
select a channel based on a channel selection algorithm. These
features can be selectively turned off to allow you to manually
select the channel of operation on both the PDL Base and
Rover.
To enable AutoBase, press the CHANNEL button on the PDL
Base until a "b" is displayed. After selecting "b", you will note
that the display will flash each programmed channel for
approximately 1 minute, during which time the channel is
analyzed for background noise and co-channel interference.
After cycling through all channels, the PDL Base will select the
channel that appears to provide the clearest channel access.
30 Tips and Techniques for Best Performance
Following channel selection, the data received from the GPS will
automatically begin transmitting.
9
Warning: Depending on the number of channels
programmed, channel selection can take from 1 to 16
minutes. We recommend that you set up and turn on
your PDL Base station as soon as possible during
system setup to prevent delays.
Equipment Care
Routine equipment care will prolong the life and reliability of your
PDL family products. Radio communication equipment is
susceptible to damage from shock or environmental extremes.
Never operate the PDL equipment out of the operating
specifications contained in Appendix B.
Error Codes
The PDL performs a variety of power-up and run-time tests to
assure optimal operation. Tests include environmental as well
as electrical measurements designed to avoid damage to the
unit while maintaining adequate operation. In the event of an
error condition, a 3-digit error code is flashed on the display.
Error codes begin with an "E" followed by two numeric digits
indicating the failure mode. Table 2 lists the possible error
conditions.
PDL User's Guide 31
Code Description
E01 External voltage too high
E02 External voltage too low
E03 External voltage too low for transmission
E04 Rover internal battery requires replacement
E05 Rover internal battery charge current too high
E06 Rover internal battery charge current too low
E07 Unit temperature exceeds safe limit for 35 W operation
E08 Unit temperature exceeds safe limit for 2 W operation
E09 Current consumption too high for 35 Watt operation
E10 Current consumption too high for 2 Watt operation
E11 Checksum error
E12 RAM error
E13 EEPROM error
E14 FLASH error
E16 Synthesizer not locked
E17
E18 Charger voltage not adequate to charge unit
E99 Unknown error
Table 2 - PDL Error Codes
What to do
E01-E03, E18 Check battery or power supply voltage level,
check power cables, recharge or replace battery, check charger.
E07-E10 Check antenna and antenna cables, use 19200 link
rate to reduce duty cycle, select low RF power.
E04-E06, E11-E16, E99 Contact customer service.
32 Tips and Techniques for Best Performance
Cycle power to clear error codes. If codes persist, contact
factory.
FCC RULES AND REGULATIONS
Licensing Requirements
It is the responsibility of the PDL Base station owner to comply
with applicable rules and regulations concerning the operation of
a radio transmitter. In the United States, the FCC regulates the
licensing of this equipment.
Application for a license is made by submitting FCC form 600
along with evidence of frequency coordination (if required) and
applicable fees. Similar licensing requirements exist worldwide.
Penalties for broadcasting without a license can be severe, and
may include the confiscation of your radio and GPS equipment.
For more information, contact our customer service department.
9
Warning: Always obey local licensing requirements
and restrictions.
Equipment Compliances
PDL products have been tested and found to comply with Parts
15 and 90 of Title 47 of the Code of Federal Regulations. The
PDL products have also been tested and found compliant for
type certification and approval in many other countries
worldwide.
For more information concerning our worldwide compliances,
contact our customer service department.
34 FCC Rules and Regulations
Being Part of the RF community
Operation of a licensed radio product makes you a member of
the RF community. Be aware that virtually all frequencies
licensed are provided on a shared basis with other users. Each
frequency used in RTK GPS activities has certain restrictions
and limitations. For complete information, refer to Part 90, Title
47, of the Code of Federal Regulations.
Most frequencies sharing data transmissions and voice
transmissions give priority to voice users. Be mindful of the
persistent nature of a GPS RTK data transmission and always
limit your RF transmission output power when performing close-
in survey situations to avoid interference with co-channel users.
We recommend using the low RF power setting for construction
site and other line-of-site surveys with baselines less than 2
miles (depending on terrain).
9
Warning: If you are in conflict with a co-channel user,
select another frequency to avoid formal FCC actions.
In most cases you are required to vacate a frequency
upon complaint by a shared channel voice user.
Most survey operations are itinerant in that the system is moved
on a frequent basis. For fixed system installations, you should
not use frequencies set aside for itinerant operations, but should
coordinate a frequency based on the fixed area operation.
Regulations differ from country to country, so please be aware of
the local regulations prior to using the PDL equipment.
PDL User's Guide 35
Automatic Station Identification
For operation in the United States, the FCC requires that radio
transmitters used for GPS RTK applications periodically
broadcast a station identifier. The station identifier is the call
sign assigned to you on the station license.
The PDL supports the broadcast of station identification in a
manner that meets the requirements of the FCC. Upon receipt
of equipment, program your FCC callsign into the configuration
of your PDL using PDLCONF software. This is only required for
transmitters.
9
Warning: Failure to transmit your station identification
is in violation of FCC regulations. Use PDLCONF
software to enter your FCC callsign.
Carrier Sense Multiple Access (CSMA)
CSMA is a technology implemented in the PDL Base to meet
FCC transmitter requirements. CSMA holds off the radio
transmission if the frequency is currently being used by a co-
channel user. On occasion, you may note that the radio
broadcasts stop for short periods of time. Most often, this is a
case of co-channel interference and the PDL Base is holding off
broadcasts due to the FCC mandated CSMA.
GPS RTK equipment is designed to function with intermittent
gaps in the data. Heavy co-channel use may limit the ability of
the PDL Base to transmit the required information. In areas of
heavy co-channel usage, try changing channels to a less used
frequency.
36 FCC Rules and Regulations
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SERVICE AND SUPPORT
Contacting Pacific Crest Corporation
Quality, technology and service are the hallmarks of Pacific
Crest Corporation. We provide easy access to our customer
service and the repair departments to keep you running
efficiently.
Phone: 1-800-795-1001 (U.S. & Canada toll free)
(408) 653-2070 (International)
(408) 748-9984 (Fax)
E-mail: support@pacifccrest.com
sales@ pacifccrest.com
Web: www. pacifccrest.com
Mail: Pacific Crest Corporation
990 Richard Avenue, Suite 110
Santa Clara, CA 95050
Support hours are 8 AM to 5 PM Pacific Standard Time.
Please visit our web site for up-to-date news and product
announcements. Firmware and software upgrades are also
available from our web site, in most cases free of charge.
38 Service and Support
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WARRANTY
Two-year Limited Warranty
This warranty gives you specific legal rights. You may also have
other rights which vary from state to state or area to area.
Pacific Crest Corporation warrants PDL family products,
exclusive of cables and batteries, against defects in materials
and workmanship for a period of two years from receipt by the
end user. Cables and batteries carry a one year warranty
against defects in materials and workmanship.
Exclusions
Should Pacific Crest Corporation be unable to repair or replace
the product within a reasonable amount of time, a refund of the
purchase price may be given upon return of the product.
The warranty on your PDL radio modem shall not apply to
defects resulting from:
• Improper or inadequate maintenance by the customer
• Unauthorized modification or misuse
• Operation outside of the environment specifications
• Negligence or misuse
Warranty Limitations
This warranty set forth above is exclusive and no other warranty,
whether written or oral, is expressed or implied. Pacific Crest
Corporation specifically disclaims the implied warranties of
merchantability and fitness for a particular purpose.
40 Warranty
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APPENDIX A - SAFETY INFORMATION
Exposure to Radio Frequency Energy
The PDL radio modem products are designed to comply with the
following national and international standards and guidelines
regarding exposure of human beings to radio frequency
electromagnetic energy:
• FCC Report and Order FCC 96-326 (August, 1996)
• American National Standards Institute (C95.3-1992)
• National Council on Radiation Protection and Measurement
(NCRP - 1986)
• International Commission on Non-ionizing Radiation
Protection (ICNRP - 1986)
• European Committee for Electrotechnical Standardization
(CENELEC)
To assure optimal radio performance and to ensure that
exposure to RF energy is within the guidelines in the above
standards, the following operating procedures should be
observed:
• DO NOT operate a transceiver when someone is within the
distance noted below of the antenna (unity gain).
• For the frequency range 450-470 MHz
3 m (approx. 108 inches) for PDLHPB 0.5-35 Watt
1.5 m (approx. 54 inches) for PDLLPB 0.5-5 Watt
• And for the frequency range 150-173 MHz
7 m (approx. 252 inches) for PDLHPB 0.5-35 Watt
3 m (approx. 108 inches) for PDLLPB 0.5-5 Watt
42 Warranty
If using an antenna with a gain greater than unity please
calculate the RF exposure as per the formula given below:
Distance = √ [gain of antenna x power output x 300]
√ [2 pi x frequency]
Power output in Watts, frequency is in MHz, distance in
meters, and antenna gain is absolute value.
• DO NOT operate the transceiver unless all RF connectors
are secure and any open connectors are properly
terminated.
• DO NOT operate the transceiver with a damaged antenna.
If a damaged antenna comes in contact with the skin, a
minor burn may result.
• DO NOT operate the equipment near electrical blasting caps
or in an explosive atmosphere.
9
Warning: Changes or modifications not expressly
approved by the FCC could void the user’s authority to
operate the equipment.
APPENDIX B - PIN-OUTS AND CONNECTORS
PDL High Power Base
The PDL Base data receptacle is a LEMO PN
HGG.1B.305.CLLP. For a mating plug, we recommend LEMO
PN FGG.1B.305.CLAD.72Z. Refer to Table 2 and Figure 6 for
pin-outs and orientation.
PDL Low Power Base and Rover
The PDL Rover data receptacle is a LEMO PN
HMG.0B.305.CLN. For a mating plug, we recommend LEMO
PN FHG.0B.305.CLAD.52Z. Refer to Table 2 and Figure 7 for
connector pin assignments.
Pin # Description Cable Wire Color
1 Power Red
2 Ground Black
3 RS-232 RX Data Yellow
4 RS-232 Signal Ground White
5 RS-232 TX Data Green
Table 3 - PDL Base and Rover Pin Assignments
Antenna
The PDL High Power Base antenna connector is a BNC female.
For a mating plug, we recommend Amphenol PN 31-320. Use
only high quality 50 Ω impedance cable for the antenna
connection.
44 Appendix A - Pin Outs and Connectors
The PDL Low Power Base and Rover antenna connector is an
industry standard NMO. The impedance is 50Ω.
Connector Manufacturer Contacts
Contact LEMO USA by calling 1-707-578-8811
Contact Amphenol by calling 1-203-743-9272
PDL LPB and Rover Data / Power Connector
PDL HPB Data / Power Connector
Connector Pin Assignment
Pin Function
1 +V (9 to 16 VDC)
2 Ground
3 RX
4 Signal Ground
5 TX
1
1
2
2
3
3
4
4
5
5
Figure 8 - PDL Data/Power Connectors
APPENDIX C - TECHNICAL SPECIFICATIONS
General
Serial Port Interface
RS-232 compatible. 1200 to 38400 baud operation with 1 start,
8 data, optional parity, and one stop bit.
Power Supply
9-16 VDC. PDL Rover quiescent/receive power consumption
0.3W. PDL High Power Base quiescent/receive power
consumption is 1.9W. PDL High Power Base in the low/high RF
power setting consumes 13W/125W during transmission. The
PDL Low Power Base quiescent/receive power consumption is
0.9W. The PDL Low Power Base when transmitting consumes
5W/11W. (PDL Base power consumption measured at 12.5
VDC.)
Radio
Frequency Ranges
Contact factory for available frequency ranges. Synthesized
frequency control with approximately 1600 channel capability.
Channel spacing 25/12.5 kHz. 2.5 ppm frequency reference.
Transmitter (PDL Base)
Carrier power variable from 0.5 Watts to 35 Watts nominal for
the High Power Base. Carrier power for the Low Power Base is
factory programmable for the 0.5 Watts to 5 Watts. Output
impedance 50-ohms. Modulation distortion is less than 5%.
46 Notes
Transmitter attack time < 18 ms. Spurious and harmonic FM -
55 dBc. FM hum and noise -40 dBm.
Receiver
Sensitivity -116 dBm or better (12dB SINAD). Selectivity for the
PDL HPB and Rover is !-60 dB. Selectivity for the PDL LPB is
!-70dB. (9600, GMSK, 25 KHz), and !-60 dB (19,200, 4LFSK,
25 KHz). FM hum and noise -40 dB. Conducted spurious -65 dB.
Carrier detect attack time 2 ms.
Modem
Transmission Rate
19,200, 9,600, 4800 bits per second (Four-level FSK)
9,600 or 4,800 bits per second (GMSK)
Transmission Protocols
Transparent, packet switched, auto-repeater, fast asynchronous,
Trimtalk™.
Forward Error Correction and Detection
With FEC enabled, data is encoded by a block code. The data is
interleaved in blocks of 20 words, giving burst error correction
capabilities for up to 20 consecutive corrupted bits. 16-bit CRCs
are generated and sent with every block of data providing 100%
error detection for burst errors shorter than 16 bits, and
99.9984% detection of all other burst errors.
PDL User's Guide 47
Modulation
Gaussian Minimum Shift Keying (GMSK) with BT of 0.5 (4800,
9600 bps link rate). Four-level FSK (4800, 9600, 19200 bps link
rate).
Environmental
Size
PDL LPB and Rover - 8.25"L x 2.40"D (21.0cmL x 6.1cmD)
PDL HPB - 6.23"W x 2.77"H x 6.58"L (15.8cmW x 7.0cmH x
16.7cmL)
Weight
PDL Rover - 0.85 lbs. (0.39 Kg)
PDL HPB - 3.22 lbs. (1.46 Kg)
PDL LPB - 0.65 lbs. (0.30 Kg)
Shock and Vibration
Per ANSI/ASAE EP455
Protection
Per IEC 144/855420 I.P. 66 Dust-tight and watertight
Temperature Range
PDL Rover Operating - -4° to 140° F (-20° to 60° C)
PDL Rover Storage - -4° to 185° F (-20° to 85° C)
PDL HPB and LPB Operating - -22° to 140° F (-30° to 60° C)
PDL HPB and LPB Storage - -67° to 185° F (-55° to 85° C)