User Manual
RF uplink & RS485 downlink Repeater
Model No.: CT103
Version：V1.4
Release Data：2018.07.23
Metering System Division Chengdu Kaifa Technology Co，Ltd
Title: CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.: Rev.: 1.3 Page: 1 of14
Document Map
The following documents are supplied for the Repeater installation, operation and maintenance.
CT103 Repeater User Manual
The CT103Repeater User Manual gives an introduction of Repeater, include functions operation guide
and product specification.
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Title: CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.: Rev.: 1.3 Page: 2 of14
Safety Instructions
Read all safety information and operating instructions before using CT103Repeater to avoid personal
injury.
FCC Warning: 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.
Caution: The user is cautioned that changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate the equipment.
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.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This
equipment should be installed and operated with a minimum distance of 20cm between the radiator and any
part of your body.
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Title: CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.: Rev.: 1.3 Page: 3 of14
Transport and Storage
Before you transport and storage the Repeater, read and observe the clause 4 titled “Transport and
storage” in this document.
Installation
Power must be cut off before install or remove CT103Repeater.
Before you install or remove the Repeater, find and read the “Product Installation Guide” first.
Operation
1. Do not break the seal without authorized operator.
2. Never remove the Repeater cover while the Repeater is in operation. Doing so will expose circuits
and components and can lead to injuries, fire or damage to the Repeater.
3. Repeater working voltage must less than 120% nominal voltage (120%Un). Long time over voltage
can lead to fire or damage to the Repeater.
4. Before you install or change external battery, read and observe the section 2.2 titled “external battery”
in this document first. Incorrect operation may cause electrical shock!!
6. Do not operate the Repeater with wet hands.
For service and technical support information, please contact:
Shenzhen Kaifa Technology (Chengdu) Co., Ltd.
Add: No.1218 Hezuo Rd., Hi-Tech Development Zone (West),Chengdu, P.R.C.
Postcode: 611730
Tel: 86-028-65706888
Email: qiongyaodai@kaifa.cn
www.kaifaRepeatering.com
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Title: CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.: Rev.: 1.3 Page: 4 of14
Content
1 PRODUCT INTRODUCTION ....................................................................................................................... 5
1.1 FRONT VIEW AND REAR VIEW .....................................................................................................................5
1.2 FEATURES LIST ............................................................................................................................................6
1.3 FUNCTION CHARACTERISTICS .....................................................................................................................7
2 REPEATER INSTALLATION ....................................................................................................................... 8
2.1 INSTALLATION GUIDE ..................................................................................................................................8
2.2 EXTERNAL BATTERY ....................................................................................................................................8
3 EVENT RECORD ........................................................................................................................................... 8
3.1 REPEATER’S EVENT RECORD .......................................................................................................................8
4 TRANSPORT AND STORAGE ..................................................................................................................... 9
ANNEXURE I WEIGHT AND DIMENSION .................................................................................................... 10
ANNEXURE II REFERENCED DOCUMENTS ................................................................................................ 11
ANNEXURE III RF CHANNEL .......................................................................................................................... 12
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Title: CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.: Rev.: 1.3 Page: 5 of14
1 Product introduction
CT103 is a repeater with RF Uplink & RS485 downlink. It’s a bridge between the Concentrator and
Meter to transfer the meter’s data. The Repeater comes with an RF module that connects the Repeater
via the RS485 interface. The communication Repeater can provide a path for forwarding weak signals,
so that the Concentrator can reliably communicate with the Repeater. The communication is not
encrypted. The Repeater only implements transmit through function.
As a part of Kaifa repeater solution, the CT103 provides RS485 port and SPD detection port and
integrated Repeating functions as described in section 1.3.
1.1 Front view and Rear view
6
3
7
11
8
4
5
10
Figure 1 Front view
Figure 2 Rear view
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Title: CT103 RF Uplink &RS485 downlink Repeater User Manual
1. Seal cap
DOC No.: Rev.: 1.3 Page: 6 of14
2. RF communication LED
3. Power LED
4. Seal
5. External battery
6. Repeater cover sealing screw
7. Meter Box open detect switch
8. RS485 port
9. SPD detection port
10. Terminal screw
11. Hook
1.2 Features List
Nominal Voltage 230V
Voltage range AC(80%Un to 120%Un)
Quiescent Power Consumption ≤3 W
Quiescent Consumption Current <20uA
Degree of Water Protection IP51
Degree of Insulation Protection II 级
Communicate mode Transparent transmission
Modulation：Lora
Frequency ：915.25M~917.75M
Communicate with Concentrator
TX power：≤ dbm
RX sensitivity：≤-119dbm（@SF=8， BW=500KHz，Data
rate=12500bps）
6 dB BW：≥500KHz
Communicate with Repeater RS485(9600bps)
Data retention
20 years (minimum) in case of power failure.
Annual failure rate<0.5%
Battery Replaceable 3.6V/1200mAh lithium battery
Repeater install in Meter Box, the Meter Box is mounted
outdoors
Environmental
Can resist external electromagnetic attack.
Operating temperature range: +10℃~ +85℃(in Meter Box)
Storage and transport temperature range: -45℃~ +85℃
Relative Humidity: 75%~100%
Certification ERC
Reference standard
Comply with relevant standards requirements for ISM
wireless device in CE,CCC,FCC
Special Technological requirements ROHS
12.5
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Title:
CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.:
Rev.:
1.3
Page:
7 of14
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
1.3 Function characteristics
Repeat
The Repeater only implements transmit through function.
SPD operative mode.
Meter Box open detection.
Power off event (last gasp).
Data transfer mode
Via RF channel to connect the Concentrator, HD(half-duplex).
Via RS485 channel to connect the Meter, HD(half-duplex).
Repeater networking
Transmit discover command(command=0x1d,
mac_des=0xffe,response_probability=100,allowed_time_slots=
100)
Meters will send their system-titles to
Reapter(command=0x1e),DCU will receive the system-titles,
Record_number = count(system-titles)
some meters will fail because the RS485 conflict,
and some meters will send system-titles OK
For every system-titles
Record_number > 0
Yes
EndNo
Searches the meter-parameter table
according to system-title
Found
Get the sap from the meter-
parameter table
Insert one record in the meter-parameter
table with a new sap
No
Yes
Register meter (command=0x1c,HDLC
device_address), no response because
broadcast)
For every system-titles
Yes
Nothing to do
Nothing to do
Reapter:all Transmit
Title:
CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.:
Rev.:
1.3
Page:
8 of14
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Event Log
Power off.
SPD OK.
SPD FAIL.
Meter Box open.
Meter Box close.
2 Repeater Installation
2.1 Installation guide
CT103Repeater should be installed at a dry Meter Box. Installation environment temperature must
not exceed Repeater operation temperature range (+10℃~ +85℃); Working voltage must in the range of
184Vac~276Vac, 60±5%Hz.
Please see Meter Box installation guide for details.
2.2 External battery
External changeable battery can provide backup energy for Repeater’s RTC. The recommended battery
size is LS14250E. Only authorize utility member can remove the battery, it is not allowable to remove
battery for consumer. Please see the detailed dimension as following:
1) Power off the Repeater, open the meter box, pull off the plug, and replace the battery, close the
Meter Box.
3 Event record
3.1 Repeater’s event record
When the event occurred, Repeater only transfers to Concentrator through RF module, it contains:
event_code1 Power off: If power off, when power up again, Repeater can detect the last power off
event, and report the last gasp event with date and time to concentrator.
event_code2 SPD OK: SPD give a disconnect signal to Repeater (only detection in power up
situation). After five seconds, the RF LED will alternating flicker and Repeater will report the
SPD OK event with date and time stamp to concentrator.
event_code3 SPD FAIL: SPD give a connect signal to Repeater (only detection in power up
situation). After five seconds, the RF LED will alternating flicker and Repeater will report the
SPD FAIL event with date and time stamp to concentrator.
event_code4 Meter Box open: When Meter Box is opened, the RF LED will alternating flicker. After
five seconds, Repeater will report the Meter Box close event with date and time stamp to
concentrator.
event_code5 Meter Box close: If the Meter Box has been opened, When the Meter Box is closed,
the RF LED will alternating flicker. After five seconds, Repeater will report the Meter Box open
event with date and time stamp to concentrator.
Title:
CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.:
Rev.:
1.3
Page:
9 of14
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
4 Transport and Storage
The Repeaters should be placed on kickstands and the height should not exceed 5 layers. The
storage condition should be clean, with an environmental temperature of between -25°C and +70°C,
relative humidity of less than 95% and with an absence of rusty matter in the air.
Title:
CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.:
Rev.:
1.3
Page:
10 of14
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Annexure I Weight and Dimension
The Repeater weighs 330g and is shaped in a box with a dimension of 65mm*153.4mm*80mm.
Title:
CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.:
Rev.:
1.3
Page:
11 of14
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Annexure II Referenced documents
No.
Standard No.
Title
1
IEC 62056-21 Ed.
1.0:2002
Electricity metering – Data exchange for meter reading, tariff and load control
– Part 21: Direct local data exchange
2
IEC 62056-46 Ed.
1.1:2007
Electricity metering – Data exchange for meter reading, tariff and load control
– Part 46: Data link layer using HDLC protocol
3
IEC 62056-53 Ed.
2.0:2006
Electricity metering – Data exchange for meter reading, tariff and load control
– Part 53: COSEM Application layer
4
IEC 62056-61 Ed.
2.0:2006
Electricity metering – Data exchange for meter reading, tariff and load control
– Part 61: Object identification system (OBIS)
5
IEC 62056-62 Ed.
2.0:2006
Electricity metering – Data exchange for meter reading, tariff and load control
– Part 62: Interface classes
6
ETSI EN301 511
V9.0.2(2003-03)
7
ETSI EN301 489-1
V1.9.2(2011-09)
Electromagnetic compatibility and Radio spectrum Matters(ERM);
Electromagnetic Compatibility (EMC) standard for radio equipment and
services; Part 1: Common technical requirements
8
ETSI EN301 489-7
V1.3.1(2005-11)
Electromagnetic compatibility and Radio spectrum Matters (ERM);
Electromagnetic Compatibility (EMC) standard for radio equipment and
services; Part 7: Specific conditions for mobile and portable radio and
ancillary equipment of digital cellular radio telecommunications systems
(GSM and DCS)
9
IEC 62052
10
IEC 62053
Title:
CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.:
Rev.:
1.3
Page:
12 of14
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Annexure III RF Channel
Channel
Frequency(MHz)
Channel
Frequency(MHz)
Channel
Frequency(MHz)
1
915.25
18
916.10
35
916.95
2
915.30
19
916.15
36
917.00
3
915.35
20
916.20
37
917.05
4
915.40
21
916.25
38
917.10
5
915.45
22
916.30
39
917.15
6
915.50
23
916.35
40
917.20
7
915.55
24
916.40
41
917.25
8
915.60
25
916.45
42
917.30
9
915.65
26
916.50
43
917.35
10
915.70
27
916.55
44
917.40
11
915.75
28
916.60
45
917.45
12
915.80
29
916.65
46
917.50
13
915.85
30
916.70
47
917.55
14
915.90
31
916.75
48
917.60
15
915.95
32
916.80
49
917.65
16
916.00
33
916.85
50
917.70
17
916.05
34
916.90
51
917.75
***End of Document ***
Title:
CT103 RF Uplink &RS485 downlink Repeater User Manual
DOC No.:
Rev.:
1.3
Page:
13 of14
Copyright Kaifa – Reproduction and communication of this document is strictly prohibited unless specifically
authorized in writing by Kaifa.
Loading...