Hemisphere GPS C321 User manual

875-0366-0 C321
Smart Antenna
User Guide
Revision: A1
July 31, 2017

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This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
ThisproductcomplieswiththeessentialrequirementsandotherrelevantprovisionsofDirective2014/53/EU.Thedeclarationofconformitymaybeconsultedat
https://hemispheregnss.com/About‐Us/Quality‐Commitment.
Copyright Notice
Copyright Hemisphere GNSS, Inc. (2017). All rights reserved.
No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise,
without the prior written permission of Hemisphere GNSS.
Trademarks
Hemisphere GNSS®, the Hemisphere GNSS logo, TRACERTM, Crescent®, EclipseTM, e-Dif®, L-DifTM, miniEclipseTM,
PocketMax3 PCTM, PocketMax3TM, PocketMax3TM, S320TM, SBX-4TM, VectorTM, XF1TM,and XF2TM are proprietary trademarks
of Hemisphere GNSS, Inc. Other trademarks are the properties of their respective owners.
Patents
Hemisphere GNSS products may be covered by one or more of the following patents:
U.S. Patents
Australia Patents
6111549 6876920 7400956 8000381 8214111 2002244539
6397147 7142956 7429952 8018376 8217833 2002325645
6469663 7162348 7437230 8085196 8265826 2004320401
6501346 7277792 7460942 8102325 8271194
6539303 7292185 7689354 8138970 8307535
6549091 7292186 7808428 8140223 8311696
6711501 7373231 7835832 8174437 8334804
6744404 7388539 7885745 8184050 RE41358
6865465 7400294 7948769 8190337
Other U.S. and foreign patents pending.
Notice to Customers
Contact your local dealer for technical assistance. To find the authorized dealer near you:
Hemisphere GNSS, Inc
8515 East Anderson Drive
Scottsdale, AZ 85255 USA
Phone: [phone]
Fax: [phone]
[email protected] www.hgnss.com
Technical Support
If you need to contact Hemisphere GNSS Technical Support:
Hemisphere GNSS, Inc.
8515 East Anderson Drive
Scottsdale, AZ 85255 USA
Phone: [phone]
Fax: [phone]
[email protected]
Documentation Feedback
Hemisphere GNSS is committed to the quality and continuous improvement of our products and services. We urge you to
provide Hemisphere GNSS with any feedback regarding this guide by writing to the following email
address:
[e-mail].

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Table of Contents
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Copyright Notice ............................................................................................................................................................................... ii
Trademarks ...................................................................................................................................................................................... ii
Patents ............................................................................................................................................................................................. ii
Notice to Customers ......................................................................................................................................................................... ii
Technical Support ............................................................................................................................................................................ ii
Documentation Feedback ................................................................................................................................................................ ii
Chapter 1: Introduction .................................................................................................................................................................... 1
Introduction ...................................................................................................................................................................................... 2
Overview and Features .................................................................................................................................................................. 2
Athena RTK .............................................................................................................................................................. 2
Atlas L‐Band ............................................................................................................................................................. 2
aRTK Position Aiding ................................................................................................................................................ 3
What’s Included ............................................................................................................................................................................. 4
Chapter 2: Installation ..................................................................................................................................................................... 5
Installation ....................................................................................................................................................................................... 6
Ports and Connections .................................................................................................................................................................. 6
Installing/Connecting C321 ............................................................................................................................................................ 7
Installing Batteries ......................................................................................................................................................................... 7
Installing UHF and GSM Antennas ................................................................................................................................................ 8
Installing C321 on a Tribach .......................................................................................................................................................... 9
Vertical Extension for the Base ................................................................................................................................. 9
Installing the C321 on a Range Pole ........................................................................................................................................... 10
Connecting to a Power Source .................................................................................................................................................... 10
Connecting to an External Device ............................................................................................................................................... 11
Using the On-Device “FN” and “I” Keys .................................................................................................................. 11
Powering the C321 On/Off ........................................................................................................................................................... 12
Inserting and Removing the Micro SD Card/SIM Card ................................................................................................................ 12
Resetting the C321 ...................................................................................................................................................................... 13
Chapter 3: Setup and Configuration .............................................................................................................................................. 14
Setup and Configuration ................................................................................................................................................................ 15
Control Panel Overview ............................................................................................................................................................... 15
Satellite LED (Green) .............................................................................................................................................. 15
Static LED (Green) .................................................................................................................................................. 16
Bluetooth LED (Blue) .............................................................................................................................................. 16
Wi‐Fi LED (Green) .................................................................................................................................................. 17

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External Data Link or Internal UHF Radio LED (Green) ......................................................................................... 17
Network LED (Green) ............................................................................................................................................. 18
Power ...................................................................................................................................................................... 18
C321 Menu Structure and Information .................................................................................................................... 19
Home Page ............................................................................................................................................................ 19
Coordinate Information ......................................................................................................................................... 19
Current Data Link Status ...................................................................................................................................... 19
File Information ...................................................................................................................................................... 19
Device Status ......................................................................................................................................................... 19
Operating Mode Settings ........................................................................................................................................ 19
Switch Operating Modes ......................................................................................................................................... 19
Operating Mode Settings (continued) ..................................................................................................................... 20
Switch Data Link ..................................................................................................................................................... 20
General Settings ..................................................................................................................................................... 20
Wi-Fi ........................................................................................................................................................................ 20
Backlight ................................................................................................................................................................. 20
Language ................................................................................................................................................................ 20
Setting up the C321 ..................................................................................................................................................................... 21
Installation of Base ...................................................................................................................................................................... 21
Installation of Rover ..................................................................................................................................................................... 21
Bluetooth Communication ............................................................................................................................................................ 22
Hemisphere Web UI .................................................................................................................................................................... 22
Initial Setup ............................................................................................................................................................. 22
Web UI Start Up ...................................................................................................................................................... 23
Install New Firmware ................................................................................................................................................................... 24
GNSS Registration .................................................................................................................................................. 24
View Logs ............................................................................................................................................................... 24
Formatting/Self-Test/Reset: .................................................................................................................................... 25
Web UI Settings ........................................................................................................................................................................... 25
Working Mode: UHF ............................................................................................................................................... 25
System Modes ........................................................................................................................................................ 28
Data Links ............................................................................................................................................................... 29
Internal UHF ............................................................................................................................................................ 29
External ................................................................................................................................................................... 31
Network ........................................................................................................................................................................................ 31
NTRIP ..................................................................................................................................................................... 31
TCP/IP..................................................................................................................................................................... 33
Rover/Bluetooth ...................................................................................................................................................... 34

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Static ....................................................................................................................................................................... 35
Device Configuration ............................................................................................................................................... 36
NMEA ...................................................................................................................................................................... 37
Satellites ................................................................................................................................................................. 37
Firmware Update ......................................................................................................................................................................... 38
Updating Firmware via Web UI ............................................................................................................................... 38
Updating Firmware via Micro SD Card ................................................................................................................... 40
How to Download Static Data ...................................................................................................................................................... 41
Appendix A: Troubleshooting ........................................................................................................................................................ 42
Appendix B: Technical Specifications ........................................................................................................................................... 44
Appendix C: Radio Mode .............................................................................................................................................................. 48


C321 User Guide Chapter 1 - Introduction Page 1 of 49
Chapter 1: Introduction
Overview and Features
What’s Included

C321 User Guide Chapter 1 - Introduction Page 2 of 49
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Introduction
Overview and Features
The C321 is an all‐new multi‐GNSS, multi‐frequency smart antenna designed for the construction environment. The
C321 delivers robust performance and high precision in the field in a compact and rugged package. With multiple
wireless communications ports and an open GNSS interface, the C321 can be used in a variety of operating modes
in a network or crew. Use the C321 as a precise base station sending RTK corrections to your existing rovers. Turn
the C321 into a lightweight and easy to use rover by connecting it to your base via UHF radio or Wi‐Fi network. The
built‐in Web UI is used to control, manage, and upgrade the C321 with new firmware and activations. C321 is
Athena enabled and Atlas capable.
Athena RTK
Athena RTK (Real time kinematic) technology is available on Eclipse‐based GNSS receivers. Athena RTK requires
the use of two separate receivers: a stationary base station (primary receiver) that broadcasts corrections over a
wireless link to the rover (secondary receiver). The localized corrections are processed on the rover to achieve
superior accuracy and repeatability. Performance testing has shown positioning accuracy at the centimeter level.
Athena RTK has the following benefits:
 Improved Initialization time ‐ Performing initializations in less than 15 seconds at better than 99.9%
of the time
 Robustness in difficult operating environments ‐ Extremely high productivity under the most
aggressive of geographic and landscape oriented environments
 Performance on long baselines ‐ Industry‐leading position stability for long baseline applications
Atlas L‐Band
Atlas L‐band corrections are available worldwide. With Atlas, the positioning accuracy does not degrade as a
function of distance to a base station, as the data content is not composed of a single base station’s information,
but an entire network’s information.
Atlas L‐band is Hemisphere's industry-leading correction service (and can be added as a subscription). Atlas
L‐Band has the following benefits:
 Positioning accuracy ‐ Competitive positioning accuracies down to 4cm RMS in certain applications
 Positioning sustainability ‐ Cutting edge position quality maintenance in the absence of correction
signals, using Hemisphere’s patented technology
 Scalable service levels ‐ Capable of providing virtually any accuracy, precision and repeatability
level in the 4 to 100 cm range
 Convergence time ‐ Industry‐leading convergence times of 10‐40 minutes

C321 User Guide Chapter 1 - Introduction Page 3 of 49
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The C321 is supported by our easy‐to‐use Atlas Portal (www.atlasgnss.com), which empowers you to update
firmware and enable functionality, including Atlas subscriptions for accuracies from meter to sub‐decimeter levels.
For more information about Athena RTK and Atlas L‐band, see: http://hgnss.com/Atlas
If your C321 is equipped with a 400 MHz radio, you may be required to obtain a valid radio license for
your jurisdiction.
aRTK Position Aiding
aRTK is an innovative feature available in Hemisphere’s C321 Smart Antenna that greatly mitigates the impact of
land‐based communication instability. Powered by Hemisphere’s Atlas L‐band system service, aRTK provides an
additional layer of communication redundancy to RTK users, assuring that productivity is not impacted by
intermittent data connectivity.
The C321 receives the aRTK augmentation correction data over satellite, while also receiving the land‐ based RTK
correction data. With this, the receiver internally operates with two sources of RTK corrections, creating one
additional layer of correction redundancy as compared to typical RTK systems. Once that process is established
(which takes only a few seconds), the receiver can operate in the absence of either correction source, or in other
words, the receiver is able to continue generating RTK positions in case the land‐based RTK correction source
becomes unavailable for a period of time.
Note: To use aRTK, you are required to change the RTK timeout to: 2700 s. This can be accomplished by
following the Web UI directions outlined in the Setup and Configuration section of this document.

C321 User Guide Chapter 1 - Introduction Page 4 of 49
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What’s Included
As per Table 1.1 below, the C321 is available in a variety of kits, with supplementary products sold as
“controller/option kits”, “accessory kits” or simply as separate accessories. Contents can be changed without prior
notice. Check the official price list to confirm contents.
Important: Charge your Li-on battery upon receipt of shipment. According to the 2017 IATA Dangerous Goods
Regulations and supplemental IATA Lithium Battery Guidance, batteries must be charged to less than 30% to
meet international air freight requirements.
Table 1‐1: C321 Parts List
Main Kits Part Number 940-2145-0
C321U
940-2146-0
C321N
940-2163-0
C321U Int’l
940-2164-0
C321N Int’l
S/C321 UHF Smart
At
752‐0006‐0 1 - 1 -
S/C321 Serial Cable 051‐0390‐0 1 1 1 1
GSM/WCDMA External
At
150‐1023‐0 1 1 1 1
UHF External Antenna 150‐1024‐0 1 - 1 -
Athena dFreq RTK Bundle* 163-1045-0 1 1 - -
Smart Battery 427‐0058‐0 2 2 2 2
Battery Charger Adapter 427‐0060‐0 1 1 1 1
Battery Charger 427‐0063‐0 1 1 1 1
C321 Cigarette Lighter
Ad t
427-0064-0 1 1 1 1
Tape Measure 699‐0006‐000 1 1 1 1
Quick Release 699-0015-0 1 1 1 1
Carry Case 750‐0183‐1 1 1 1 1
8 GB SD Card 750‐1169‐0 1 1 1 1
Accessory Kits Part Number 940-2155-0
Base Acc
940-2156-0
Rover Acc
Accessory
Only
C321 Power Cable 054‐0171‐0 1 - -
C321 5-Pin Power Cable 054‐0172‐0 - - 1
C321 5-Pin Power Cable 054-0173-0 - - 1
C321 5-Pin Power Cable 054-0178-0 1 - -
C321 5-Pin Power cable 054-0180-0 - - 1
C321 UHF Antenna (TNC) 150-1026-0 1 - -
C321 External UHF 710-0136-6 1 - -
Controller/Option Kits Part Number 940-2149-0
Cntrlr (NA)
940-2150-0
Cntrlr (EU)
940-2165-0
Int’l Option
Mesa 2 Tablet Kit 940-2174-0 1 1 1
Hemisphere SiteMetrix
Software Kit
940-2175-0 1 - -
Athena dFreq RTK Bundle*
* feature activation
163-1045-0 - - 1

C321 User Guide Chapter 2 - Installation Page 5 of 49
Chapter 2: Installation
Ports and Connections
Installing Batteries
Installing UHF and GSM Antenna
Installing on a Tribrach
Installing on a Range Pole
Connecting to a Power Source
Connecting to an External Device
Powering C321 On/Off
Inserting and Removing the SD and SIM Card
Resetting the C321

C321 User Guide Chapter 2 - Installation Page 6 of 49
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Installation
Ports and Connections
All ports and connections are located on the bottom of the unit, as shown in Figure 2‐1. Table 2‐1
provides additional information about each port/connection.
Figure 2-1: C321 Ports and Connectors
Table 2‐1: C321 Ports and Connections
Port What to connect
7‐pin Data Port (LEMO) Data cable for serial or USB (Item 7 in Table 1‐1)
5‐pin Power/Radio Port (LEMO) External Power and Radio devices (Item 5 and 6 in Table 1‐1)
GSM antenna connector External GSM antenna (Item 9 in Table 1‐1)
UHF Antenna Connector External antenna (Item 8 in Table 1‐1)
Mounting hole Pole or tripod mount

C321 User Guide Chapter 2 - Installation Page 7 of 49
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Installing/Connecting C321
Installing Batteries
The C321 allows for one battery (11.1 V ‐ 37.74 Wh) to be installed at a time. When installing the battery, ensure
the contact points are facing up towards the “Hemisphere” logo. Slide the battery into the designated spot until the
“battery tension bar” clicks into place. The projected run time of the battery is 6 hours, while running in UHF
receive mode. The C321 kit provides two batteries, as noted in the “What’s Included?” portion of this user guide.
Figure 2-2: Battery Installation

C321 User Guide Chapter 2 - Installation Page 8 of 49
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Installing UHF and GSM Antennas
To install the UHF portion of the C321 antenna, locate the UHF antenna (150‐1024‐0) from the kit list under “What’s
Included”. Insert the connector end of the UHF antenna and rotate clockwise to secure the antenna to the C321. To
install the GSM portion of the C321 antenna, locate the GSM antenna (150‐1023‐0) from the kit list under “What’s
Included”. Insert the connector end of the GPRS antenna and rotate clockwise to secure the antenna to the C321.
Figure 2-3: Installing UHF and GSM Antennas
Note: Only one antenna (UHF or GSM) can be connected to the C321 at a time.

C321 User Guide Chapter 2 - Installation Page 9 of 49
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Installing C321 on a Tribach
The C321 mounts flush to the tribrach, by securing the 5/8-11 female metal mounting portion of the C321 to the
standard 5/8-11 male portion of the tribrach. Hand-tighten (35‐40 in-lbs. of torque) to secure the C321 onto the mount
in a clockwise rotation.
Figure 2-4: Installing C321 on a Tribach
Vertical Extension for the Base
The vertical extension is a 25cm aluminum pole that mounts to the top of a tripod tribrach. This allows the C321 to
have a similar height to the rover and provides better access to the bottom of the C321 unit. Access to the bottom of
the C321 makes for easier cable connections and adjustments to UHF or GPRS antennas.
Figure 2-5 Vertical Base Extension

C321 User Guide Chapter 2 - Installation Page 10 of 49
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Installing the C321 on a Range Pole
Using the standard 5/8-11 mount on the bottom of the C321, you can secure the unit to a field standard 5/8-11 range
pole. the C321 should be placed carefully on the range pole, to ensure cross‐ threading does not occur, while rotating
the unit in a clockwise direction. Hand-tighten (35‐40 in-lbs. of torque) to secure to the unit.
Figure 2-6: Range Pole Installation
Connecting to a Power Source
The C321 has two main power sources. The first being an internal, removable battery which is described in the earlier
portion of this chapter. The second source of power is the external power cable (054‐0171‐0). The 5‐pin (Lemo)
connector allows 9 to 24V of power into the C321.
Figure 2-7: External Power Connector

C321 User Guide Chapter 2 - Installation Page 11 of 49
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Connecting to an External Device
The 7‐pin connector is available for troubleshooting, debugging, and USB log downloads.
Figure 2-8: External Device Connector
Using the On-Device “FN” and “I” Keys
The on‐device menu can be navigated by using the on‐device keys. The FN key allows you to scroll through each item
on the device menu display. The I key acts as an enter key for selecting to required menu option. The I key also acts as
a power key when the menu option of “power” is selected. (See powering the C321 on/off below).
Figure 2-9: C321 On-Device Menu

C321 User Guide Chapter 2 - Installation Page 12 of 49
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Powering the C321 On/Off
The C321 has a power-on/off the receiver function.
 Power-on receiver: Press I key for 1 second, the device will beep three times.
 Power-off receiver: Press I key for 0.5 seconds to navigate to the main menu screen. Once on the main menu
screen push the FN key to work the menu box to the I icon. When the box is located over the I icon, press the I
key for 0.5 seconds to turn the device off.
Note: If you hold the “I” button for longer than 0.5 seconds, the device goes into self‐ check mode. (See “Self‐Check”
below for more information).
Self‐Check: Self Check is a procedure for verifying the correct working of the instrument devices. The program is
mainly to predict whether the receiver modules works normal ahead of time or not. The self‐checking includes status
reviews of GPS, Wi‐Fi, Bluetooth, radio, network and sensor, a total of six parts.
Inserting and Removing the Micro SD Card/SIM Card
Caution: Use electrostatic discharge (ESD) protection, such as by wearing an ESD strap that is attached to an
earth ground before inserting or removing the SIM card on the C321. If an ESD strap is not available then touch a
metal object prior to accessing the SIM card holder.
The Micro SD card and the SIM card are only accessible by first opening the battery door, where:
 The “SIM” card slot is positioned on the left side of the battery opening
 The “SD” card slot is positioned on the right side of the battery opening
To remove the Micro SD card or SIM card:
1. Open the battery door.
2. Gently push the card in; it will then snap back and slightly out.
3. Remove the card.
Note: When you insert either card make sure the contacts on the card are facing upwards, towards the top of the unit
and the side of the card with the notch first.

C321 User Guide Chapter 2 - Installation Page 13 of 49
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To insert the Micro SD card or SIM card:
1. Place the card in its appropriate card slot.
2. Gently push the card in until it clicks.
3. Close and secure the battery door.
Figure 2-10: Micro SD/SIM Card Slots
Resetting the C321
To reset the C321, lift the battery door and locate the “Reset” button between the SIM card and SD card slots. The
reset button will power the unit off and automatically restart the unit.
Figure 2-11: C321 Reset button

C321 User Guide Chapter 3
–
Setup and Configuration Page 14 of 49
Chapter 3: Setup and Configuration
Control Panel Overview
Base Setup
Rover Setup
Bluetooth Communication
Hemisphere Web UI
Installing New Firmware
Web UI Settings
Network
Firmware Updates
Downloading Stating Data

C321 User Guide Chapter 3
–
Setup and Configuration Page 15 of 49
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Setup and Configuration
Control Panel Overview
Figure 3-1: Control Panel and Display
Satellite LED (Green)
The LED illuminates and stays a solid green color to indicate a signal/satellite lock has been achieved.
Figure 3-2: Satellite LED