Toyota I Site DHU4 User manual

Page 1 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
DHU4 User Manual
Model Name: DHU4
Picture showing the Toyota DHU4 unit to the left. Connected with a four-port mini-fakra to the
Smarteq antenna to the right.
General
DHU4 is a telematic node, intended to be mounted into a Toyota forklift. It is always stationary
installed in a forklift where it has several wired connections e.g., power, can buses etc.
It also communicates wireless with LTE, WiFi and Bluetooth technology. It has an external antenna
connected.

Page 2 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
Information to the user
This product is communicating wirelessly with LTE and/or Bluetooth/WiFi.
Note:
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help
 Warning: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
 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
 The device for operation in the band 5150 – 5250 MHz is only for indoor use to prevent
harmful interference to co-channel mobile satellite systems;
 The maximum antenna gain permitted for devices in the band 5250 – 5350 MHz and 5470 –
5725 MHz shall comply with the e.i.r.p. limit
 The maximum antenna gain permitted for devices in the band 5725 – 5825 MHz shall comply
with the e.i.r.p. limits specified for point-to-point and non point-to-point operation as
appropriate.
 High-power radars are allocated as primary users of the bands 5250 – 5350 MHz and 5650 –
5850 MHz and these radars could cause interference and/or damage to LE-LAN devices”

Page 3 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
This device complies with ISED Canada licence-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept
any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit
pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Cet
appareil est conforme aux limites d'exposition aux rayonnements de la IC pour un nvironnement non
contrôlé. L'antenne doit être installé de façon à garder une distance minimale de 20 centimètres
entre la source de rayonnements et votre corps. Gain de l'antenne doit être ci-dessous.
Testing has been performed on the module in a co-located configuration with the identified
module(s) to determine if new sources of interference are created when the two transmitter modules
are simultaneously transmitting.
Warning:
 This device is approved for use in a mobile rf exposure environment. A minimum separation
distance of 20 cm must be maintained between the antenna and nearby persons.
 The module may only be co-located in a host device with the following radio modules:
Quectel EG25, Quectel FC20.
List of applicable FCC rules
The following FCC rules are applicable to the equipment:
 CFR 47, Part 15, Subpart C
 CFR 47, Part 2, Subpart J – Radiofrequency radiation exposure: mobile devices

Page 4 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
Specific operational use conditions
Most of the installations are performed at Toyota production facilities by qualified personnel into a
Toyota Forklift. However, after market installations also exists. The user can never operate the DHU4
directly.
Important: The DHU4 transmitting antenna must be installed and operated with minimum distance
of 20 cm between the radiator and nearby persons.
Co-location
The following modules have been evaluated and may be co-located in a mobile configuration.
Cellular module Quectel EG25:
FCC ID: XMR201903EG25G
IC ID: 10224A-201903EG25G
WiFi/Bluetooth module Quectel FC20:
FCC ID: XMR201703FC20
IC ID: 10224A-201703FC20
RF exposure consideration
The application conditions are ‘Class B’ product, ‘Mobile’, always at least 20cm from a person’s
body.
Warning
This device is approved for use in a mobile rf exposure environment. A minimum separation distance
of 20 cm must be maintained between the antenna and nearby persons.
The module may only be co-located in a host device with the following radio modules: Quectel
Wireless Solutions Co., Ltd. FC20 and EG25.

Page 5 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
Antennas
Smarteq Combination antenna, P/N 550237, with different cable lengths for different forklifts.
Shortest cable length is 200mm. This length is used during certification for all tests, since this will
transmit highest RF power due to minimum of cable loss. Other lengths exists, but it can never be
shorter than 200mm.
The antenna has four antenna elements. The antenna is always connected to the DHU4 antenna port
with a Quad Mini Fakra (QMF) cable.
Antenna element LTE1
Main LTE/cellular main antenna. Can receive and transmit.
Antenna element LTE2
Main LTE/cellular diversity antenna. Can only receive.
Antenna element WiFi/Bluetooth
WiFi/Bluetooth antenna. Can receive and transmit. 2.4GHz WiFi/BT and 5GHz WiFi.
Antenna element GNSS
GNSS/GPS antenna. Can only receive.

Page 6 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
Specification of Antenna 1 = Antenna LTE1 and Antenna 2 = Antenna LTE 2

Page 7 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
Specification of WiFi/Bluetooth Antenna

Page 8 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
GNSS Antenna Specification

Page 9 of 9
DHU4 - User Manual
Toyota Material Handling Manufacturing Sweden AB
Svarvargatan 8
SE-595 81 Mjölby, Sweden
Tel: [phone]
www.toyota-forklifts.eu
Company No. 556198-2868
VAT. SE556198286801
Dat
e:
10
t
h of December
2021
Label
Information on test modes and additional test
Testing has been performed on the module in a co-located configuration with the identified
module(s) to determine if new sources of interference are created when the two transmitter
modules are simultaneously transmitting.
Additional test requirements
This module is only authorized for FCC rule parts listed on the FCC grant. The host equipment
manufacturer is responsible to test the host device for compliance with Unintentional Radiator
requirements with the modules installed to determine if the host device in combination with the
module(s) is in compliance with emissions requirements of CFR 47, Part 15, Subpart B and ICES-003.