Hytera RD985 User manual

RD985
Digital Repeater
User Manual

Preface
Thanks for your favor in our product. To derive optimum performance from the product, please read this
manual and the supplied Safety Information Booklet carefully before use.
This manual is applicable to the following model:
RD98X (X may indicate 2, 5, 6 or 8)

Instructional Icons
The following icons are available through this manual:
Caution: indicates situations that could cause damage to your product.
Note: indicates tips that can help you make better use of your product.
*: indicates functions available in later version.
Term Explanation
Duplexer
Duplexer is a device that allows bi-directional communication. Its role is to isolate the TX signal from the
RX signal to ensure that the transmitter and receiver can work normally.
Feed Line
Feed Line is the cable or transmission line that connects the antenna with the radio transmitter or
receiver.
Voltage Standing Wave Ratio (VSWR)
VSWR is a value that measures how well a load is impedance-matched to a source.
Squelch
Squelch is a circuit function that acts to suppress the audio output of a receiver in the absence of a
sufficiently strong desired input signal.
Copyright Information
Hytera is the trademark or registered trademark of Hytera Communications Co., Ltd. (the Company) in
PRC and/or other countries or areas. The Company retains the ownership of its trademarks and product
names. All other trademarks and/or product names that may be used in this manual are properties of their
respective owners.
The product described in this manual may include the Company’s computer programs stored in memory
or other media. Laws in PRC and/or other countries or areas protect the exclusive rights of the Company
with respect to its computer programs. The purchase of this product shall not be deemed to grant, either
directly or by implication, any rights to the purchaser regarding the Company’s computer programs. Any of
the Company’s computer programs may not be copied, modified, distributed, decompiled, or
reverse-engineered in any manner without the prior written consent of the Company.

The AMBE+2TM voice coding technology embodied in this product is protected by intellectual property
rights including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc. This voice coding
technology is licensed solely for use within this product. The user of this technology is explicitly prohibited
from attempting to decompile, reverse engineer, or disassemble the Object Code or in any other way
convert the Object Code into a human readable form.
U.S. Patent Nos. #6,912,495 B2, #6,199,037 B1, #5,870,405, #5,826,222, #5,754,974, #5,701,390,
#5,715,365, #5,649,050, #5,630,011, #5,581,656, #5,517,511, #5,491,772, #5,247,579, #5,226,084 and
#5,195,166.
Disclaimer
The Company endeavors to achieve the accuracy and completeness of this manual, but no warranty of
accuracy or reliability is given. All the specifications and designs are subject to change without notice due
to continuous technology development. No part of this manual may be copied, modified, translated, or
distributed in any manner without the express written permission of us.
If you have any suggestions or would like to learn more details, please visit our website at:
http://www.hytera.com/.
RF Radiation Information
RF Radiation Profile
Radio Frequency (RF) is a frequency of electromagnetic radiation in the range at which radio signals are
transmitted. RF technology is widely used in communication, medicine, food processing and other fields.
It may generate radiation during use.
RF Radiation Safety
In order to ensure user health, experts from relevant industries including science, engineering, medicine
and health work with international organizations to develop standards for safe exposure to RF radiation.
These standards consist of:
 United States Federal Communications Commission, Code of Federal Regulations; 47CFR part 2
sub-part J;
 American National Standards Institute (ANSI)/Institute of Electrical and Electronic Engineers (IEEE)

C95. 1-1992;
 Institute of Electrical and Electronic Engineers (IEEE) C95. 1 – 1999;
 International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998;
FCC Regulations
Federal Communication Commission (FCC) requires that all radio communication products should meet
the requirements set forth in the above standards before they can be marketed in the U.S, and the
manufacturer shall post a RF label on the product to inform users of operational instructions, so as to
enhance their occupational health against exposure to RF energy.
Operational Instructions and Training Guidelines
To ensure optimal performance and compliance with the occupational/controlled environment RF energy
exposure limits in the above standards and guidelines, users should always adhere to the followings:
 Gain of antenna must not exceed 6.5dBi.
 Antenna Installation: install the antenna at least 3.5 meters away from your body, in accordance with
the requirements of the antenna manufacturer/supplier.
EU Regulatory Conformance
As certified by the qualified laboratory, the product is in compliance with the essential requirements and
other relevant provisions of the Directive 1999/5/EC. Please note that the above information is applicable
to EU countries only.

Contents
Checking Items in the Package.................................................................................................................... 1
Product Overview ......................................................................................................................................... 1
Front Panel ............................................................................................................................................ 1
Programmable Keys * ........................................................................................................................... 2
Rear Panel ............................................................................................................................................ 2
Internal Parts ......................................................................................................................................... 3
Installation Guide .......................................................................................................................................... 3
Installation Requirements ..................................................................................................................... 3
Before Installation ................................................................................................................................. 4
Installation Steps ................................................................................................................................... 4
After-installation Verification .................................................................................................................. 6
Status Indication ........................................................................................................................................... 6
LCD Icon ............................................................................................................................................... 6
LED Indicator ........................................................................................................................................ 7
Basic Operations .......................................................................................................................................... 8
Turning the Repeater On/Off................................................................................................................. 8
Adjusting the Volume ............................................................................................................................ 8
Adjusting the Power Level .................................................................................................................... 8
Backlight ................................................................................................................................................ 8
Locking/Unlocking the Repeater ........................................................................................................... 9
Changing the Channel .......................................................................................................................... 9
Menu Navigation .......................................................................................................................................... 9
Radio Info ............................................................................................................................................ 10
Channel Info ........................................................................................................................................ 10
Scan ..................................................................................................................................................... 11
Digital Speaker .................................................................................................................................... 12
Exit ...................................................................................................................................................... 13
Alarm Information ....................................................................................................................................... 13
Over Temperature Alarm ..................................................................................................................... 13

Fan Failure Alarm ................................................................................................................................ 14
VSWR Alarm ....................................................................................................................................... 14
Low Forward Power Alarm .................................................................................................................. 15
Over/Low Voltage Alarm ..................................................................................................................... 15
TX/RX Unlock Alarm ........................................................................................................................... 16
Troubleshooting .......................................................................................................................................... 17
Care and Cleaning ..................................................................................................................................... 18
Optional Accessories .................................................................................................................................. 18

1
Checking Items in the Package
Please unpack carefully and check that all items listed below are received. If any item is missing or
damaged, please contact your dealer.
Repeater Power Cord
Documentation Kit
Product Overview
Front Panel
No.
Part Name
No.
Part Name
1
Accessory Jack
9
Slot 1 RX Indicator
2
Volume Control Knob /
Power Indicator
10
Alarm Indicator
3
Repeat Mode Indicator
11
Programmable Key *

2
4
Analog Mode Indicator
12
LCD Display
5
Slot 2 RX Indicator
13
Channel Up (CH+)
6
Slot 2 TX Indicator
14
Navigation Knob
7
Digital Mode Indicator
15
Channel Down (CH-)
8
Slot 1 TX Indicator
16
Speaker
Programmable Keys *
For enhanced convenience, you can request your dealer to program the keys P1, P2, P3 and P4 as
shortcuts to appropriate functions.
Rear Panel
No.
Part Name
No.
Part Name
1
TX Antenna Interface
6
Accessory Jack
2
Optional Interface 1
7
DC Power Interface
3
RX/Duplex Antenna
Interface
8
Ethernet Port *
4
Optional Interface 2
9
Ground Screw
5
Monitor/Tuning Interface

3
Internal Parts
No.
Part Name
No.
Part Name
1
Baseband Module
4
Exciter Module
2
Front Panel
5
Receiver Module
3
PA Module
Installation Guide
Proper installation can ensure optimum performance and reliability of the repeater. Therefore, be sure to
read the following instructions before installation.
Installation Requirements
Installation Environment
The repeater must be installed in a dry and well-ventilated place with ambient temperature of
-30℃~+60℃ and relative humidity of less than 95%.
Installation Location
The repeater can be installed in a rack, bracket, cabinet or on a desk.
Installation Tools
Tools required for installing the repeater include a cross head screwdriver, a torx screwdriver and a

4
spanner.
Note: Please refer to Safety Information Booklet for more information.
Before Installation
1. Voltage Check
Please check whether the voltage of DC power or battery meets the repeater specifications.
2. Product Check
Please check whether the repeater works properly by observing the 8 LEDs located in the front panel.
3. Parameter Configuration
When the repeater proves to work normally, configure appropriate parameters according to your actual
requirements. And then you can proceed with on-site installation.
Installation Steps
Install the repeater as follows:
1. Install the repeater at a proper location;
2. Attach all necessary accessories;
3. Ground the repeater through the Ground Screw located on the rear panel.
Installing the Duplexer
If the repeater needs to work with a duplexer, you should implement the following operations before
installation.
1. Loosen the three screws on the bracket with a cross head screwdriver. See the figure below.
2. Install the duplexer onto the bracket.
Be sure to observe the specifications of two antenna connectors on the duplexer, to determine which
one should be connected to the transmitter. The connector connecting the transmitter should be
close to the PA module to reduce RF loss, as shown below:

5
3. Loosen the screw at the back of the top cover, and then pull the top cover to remove it.
4. Loosen the 6 screws locking the PA heat sink, remove all power, data and RF cables from the PA,
and finally remove the PA heat sink. See the figure below.
5. Connect the RF cable. See the figure below.
6. Install the duplexer to the repeater.
After the duplexer is mounted properly, fasten it with the 2 screws inside the housing and on the side
respectively.
7. Then attach the PA heat sink and connect all cables.
8. Close the repeater cover.
Installation Diagram

6
Duplexer with Front Side Facing Upwards
Duplexer with Front Side Facing Downwards
After-installation Verification
After installation is completed, power it on and verify whether it works properly by observing the 8 LEDs
located in the front panel.
Status Indication
LCD Icon
These icons may appear on the LCD to help you easily identify the repeater status.
Screw
RF Cable
Screw
RF Cable
Screw
Screw

7
Icon Name
Icon
Repeater Status
RSSI Indicator *
More bars indicate better signal strength.
TX Power Indicator
Low TX power for the current channel.
High TX power for the current channel.
Scan Indicator
Scan is in progress.
Monitor Indicator *
The Monitor feature is active.
Speaker Indicator
The speaker is unmuted.
Alarm Indicator
An alarm message is given.
Accessory Indicator *
An accessory is connected.
Scrambler/Encrypt
Indicator
The Scrambler/Encrypt feature is active.
Operation Mode
Indicator
RM
The repeater is operating in Repeat mode.
LED Indicator
LED Indication
Part No.
Repeater Status
Power Indicator glows green.
2
Normal power-on
Alarm Indicator glows red.
10
Abnormal operation
Repeat Mode Indicator
glows green.
3
The repeater is operating in Repeat mode.
Repeat Mode Indicator
goes out.
3
The repeater is operating in Base mode.
Slot 1 TX Indicator glows
red.
8
The repeater is transmitting on an analog
channel or on slot 1.
Slot 1 RX Indicator glows
green.
9
The repeater is receiving on an analog
channel or on slot 1.
Slot 2 TX Indicator glows red.
6
The repeater is transmitting on slot 2.

8
Slot 2 RX Indicator glows
green.
5
The repeater is receiving on slot 2.
Analog Mode Indicator
glows yellow.
4
The repeater is operating in Analog mode.
Digital Mode Indicator glows
blue.
7
The repeater is operating in Digital mode.
Basic Operations
Turning the Repeater On/Off
 ON: To power up the repeater, connect a DC power supply to it. In this case, the repeater shows
power-up screen and the Power Indicator glows green.
 OFF: To power off the repeater, disconnect the DC power supply.
Adjusting the Volume
 On an analog channel: Rotate the Volume Control knob clockwise to increase the volume or
counter-clockwise to decrease it.
 On a digital or mixed channel: This knob does not work.
Adjusting the Power Level
You may request your dealer to set the TX power to High or Low. High power can extend the coverage,
enabling you to communicate with farther terminals.
There are two levels available: High (indicated by ) and Low (indicated by ).
Backlight
Activating the backlight can illuminate the LCD and all the front panel keys, so as to facilitate your
operation under dim light conditions.
You dealer may set the backlight to operate in any of the following modes:
 Timed: key press, knob operation or signal reception/transmission can activate the backlight. If no
foregoing event occurs within the specified time period, the backlight will go out automatically.

9
 Enable: the backlight remains activated all the time.
Note: When an alarm event occurs, the backlight will remain activated until the alarm disappears.
Locking/Unlocking the Repeater
You can request your dealer to lock the knob and all keys in the front panel to prevent accidental
operation. To unlock, the repeater must be re-programmed by your dealer.
Changing the Channel
You can use the Channel Up or Channel Down key in the front panel to change the channel cyclically.
The alias of the current channel is displayed on the LCD display.
Menu Navigation
The options under the main menu vary with the channel type.
 Analog Channel
 Digital or Mixed Channel

10
Radio Info
Under this menu, you can view product information, including Radio ID, Radio Alias, Serial Number,
Radio Model, Freq Range, Firmware Ver, RCDB Ver, Bootload Ver, Program Date and En Lang Ver.
To access this menu:
1. In the home screen, press the Navigation knob to enter the main menu.
2. Rotate this knob to select the "Radio Info” option.
3. Press this knob again to view details, as shown below.
In the above interface, you can rotate the Navigation knob to scroll through related information. To
exit and return to the main menu, press the knob.
Note: If a non-English package is programmed into your repeater, the “Other Lang Ver” will appear
under this menu.
Channel Info
Under this menu, you can view channel information. The LCD will display different channel items as per
the channel type.

11
Channel Type
Channel Information
Digital Channel
CH Alias, TX Frequency, RX Frequency, Color Code
Analog Channel
CH Alias, TX Frequency, RX Frequency, CH Band, TX
CTCSS/CDCSS, RX CTCSS/CDCSS
Mixed Channel
CH Alias, TX Frequency, RX Frequency, CH Band, TX
CTCSS/CDCSS, RX CTCSS/CDCSS, Color Code
To access this menu:
1. In the home screen, press the Navigation knob to enter the main menu.
2. Rotate this knob to select the "Channel Info” option.
3. Press this knob again to view details, as shown below.
In the above interface, you can rotate the Navigation knob to scroll through related information. To
exit and return to the main menu, press the knob.
Scan
The Scan feature allows you to listen to communication activities on other channels so that you can keep
a close track of your team members. You can request your dealer to create a scan list for each channel.
Each list may contain 32 channels at most.
To access this menu:
1. In the home screen, press the Navigation knob to enter the main menu.
2. Rotate this knob to select the "Scan” option.
3. Press this knob again to access the “Scan on/off” interface.

12
In the above interface, you can enable or disable the Scan feature. To exit and return to the main menu,
press the knob.
Note: If the “Scan” option is not checked in the CPS by your dealer, you can not enable or disable
the Scan feature via this menu.
Digital Speaker
The Digital Speaker feature allows your repeater to receive audio from a specific slot, or to mute for the
digital channel.
To access this menu:
1. In the home screen, press the Navigation knob to enter the main menu.
2. Rotate this knob to select the "Digital Speaker” option.
3. Press this knob again to access the “Digital Speaker” interface.
In the above interface, you can select a specific slot to receive, or mute the speaker for the digital
channel. To exit and return to the main menu, press the knob.