OG STD-601B

OG STD-601B
OPERATION GUIDE
Miniature narrow band radio transceiver
STD-601 434 MHz
Operation Guide
Version 2.0 (Mar. 2016)
・ This product requires electrical and radio knowledge for setup and operation.
・ To ensure proper and safe operation, please read this operation guide thoroughly prior to use.
・ Please keep this operation guide for future reference.
CIRCUIT DESIGN, INC.
7557-1 Hotaka, Azumino
Nagano 399-8303 JAPAN
Tel: 0263-82-1024
Fax: 0263-82-1016
e-mail: [email protected]
http://www.circuitdesign.jp
OG_STD-601B_v20e
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Circuit Design, Inc.
OPERATION GUIDE
Contents
1. Outline..................................................................................................................................................................3
2. Features and applications....................................................................................................................................3
3. Specifications .......................................................................................................................................................4
4. Terminal specifications.........................................................................................................................................7
5. Frequency channel table....................................................................................................................................10
6. Connection diagram........................................................................................................................................... 11
* The same VCC should be used for the STD-601 and the controller................................................................... 11
* The length of connection wire between the STD-601 and the controller should be within 20 cm. ...................... 11
7. Block diagram ....................................................................................................................................................12
8. External dimensions ..........................................................................................................................................13
9. Recommended foot print ...................................................................................................................................14
10. Commands and responses..............................................................................................................................15
10.1 Control commands & responses .........................................................................................................15
10.2 "@C"
Frequency channel setting.....................................................................................................15
10.3 "@D" Default frequency channel setting ............................................................................................15
10.4 "@B" RF bit rate setting ....................................................................................................................16
10.5 "@G" Default RF bit rate setting ........................................................................................................16
10.6 "@P" RF transmit power setting.........................................................................................................16
10.7 "@H" Default RF transmit power setting ............................................................................................17
10.8 "@U" UART bit rate setting ................................................................................................................17
10.9 "@O" Default UART bit rate setting ...................................................................................................17
10.10 "@R" RSSI acquisition (enabled only in the reception) ....................................................................18
10.11 "@K" Image rejection calibration ......................................................................................................18
10.12 Error responses .................................................................................................................................19
11. Command timing..............................................................................................................................................20
12. RSSI characteristics ........................................................................................................................................22
* RSSI accuracy is within ± 5 dB in the input level range of from -110dBm to -20dBm........................................22
13. RF data format.................................................................................................................................................23
14. Image rejection calibration...............................................................................................................................24
15. Caution for use in continuous transmission and reception........................................................................................24
16. Lead-free reflow profile ....................................................................................................................................25
Regulatory compliance information
Important notice
OG_STD-601B_v20e
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Circuit Design, Inc.
OPERATION GUIDE
1. Outline
The STD-601 434MHz is a miniature radio transceiver module designed for industrial remote control
and telemetry applications. The parameters such as RF power, data rate and channel can be set
through the use of dedicated serial commands.
The STD-601 operates on the 434MHz and conforms to the EN 300 220 standard.
The transceiver uses a transparent input/output interface, enabling users to use their own protocols.
2. Features and applications
Features
 Small 20 x 32 x 5 mm SMD
 RF output power selectable 10 / 5 / 1 mW
 RF bit rate 4.8 / 9.6 kbps
 Low consumption current: TX 26 mA (10 mW) / RX 19 mA at 3 V
 Transparent interface for data input and output (asynchronous)
 Internal level shifter that allows easy interface with external controllers
 R&TTE (EN 300 220) compliance
Applications
 Industrial telecontrol systems
 Telemetry systems
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OPERATION GUIDE
3. Specifications
General specifications
All values were measured with the antenna ports terminated into 50 ohm and at 25 degree C +/- 5 degree C unless
otherwise noted.
Item
Specification
Applicable standard
EN300 220
Communication method
Emission type
Oscillation type
Operation frequency
Channel spacing
Simplex, Half-duplex
F1D (Binary GFSK)
Number of channels
137
PLL reference frequency
30 MHz, TCXO
Antenna impedance
50 ohm (nominal)
Dimensions
Weight
20 × 32 × 5 ( W x D x H ) mm, Not including connector pins
4.5 g
PLL control (RFIC)
433.0750- 434.7750 MHz
25 kHz
Interface specifications
Item
Specification
Output
TXD
Input
RXD
DO
TX data input
DI
Interrupt output
INT
Pulse width for
input/output data
Data polarity
*1
*
No parity
Data length: 8 bits, Stop bit : 1 bit
RX data output
TX select / RX select
Remarks
kbps
Bit rate: 9.6 / 19.2 / 38.4
UART interface for
command setting
Unit
TXSEL
RXSEL
DO
DI
DO
DI
L = 0 to 0.4
*1
H = Vcc x 0.67 to Vcc
L = 0 to 0.15
*1
H = Vcc - 0.4 to Vcc
L = 0 to 0.4
*1
H = Vcc x 0.67 to Vcc
L = 0 to 0.15
*1
H = Vcc -0.4 to Vcc
L = 0 to 0.4
*1
H = Vcc x 0.67 to Vcc
L = 0 to 0.15
*1
H = Vcc - 0.4 to Vcc
V
UART
V
UART
V
V
V
V
Low active
208 us to 10 ms
RF bit rate 4800 bps
104 us to 10 ms
RF bit rate 9600 bps
Positive
DO output corresponding to DI
input
" H" level depends on the Vcc voltage.
The input terminals should be driven with an open-drain or a CMOS output. .
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OPERATION GUIDE
Electrical specification
All values were measured with 10mW setting at 434.0 MHz unless otherwise noted.
Common to transmitter and receiver
Item
Conditions
MAX
Unit
3.0
5.0
V
-3
3
ppm
Reference temp.=25°C
RF bit rate
4.8
9.6
kbps
Set by command
Guaranteed operating
temperature range
-20
65
°C
No dew condensation
Operating ambient
*2
temperature range
-30
75
°C
No dew condensation
Storage
temperature range
-30
80
°C
No dew condensation
Frequency drift
-1
1
ppm
/ year
Operating voltage
Frequency stability
MIN
-20 to + 65°C
TYP
Remarks
Initial frequency
-1.5
1.5
ppm
tolerance
*2
The temperature range where transmission and reception are possible, but the specification is not guaranteed
in the ranges over the Guaranteed operating temperature range.
Transmitter part
Item
Conditions
MIN
TYP
MAX
Unit
Remarks
Conducted 50 Ω
RF output power
10 mW setting
8.0
9.0
10
mW
Deviation
Frequency stability
4800 bps
±2.0
±2.2
±2.4
kHz
9600 bps
±3.55
±3.75
±3.95
kHz
Spurious emission
47-74 MHz, 87.5-118 MHz,
174-230 MHz, 470-862 MHz
-54
Other frequencies below
1000 MHz
-37
Frequencies above 1000 MHz
-30
TX current
consumption
Vcc=3.0 V
Adjacent CH power
Ch:25 kHz, BW:16 kHz
OG_STD-601B_v20e
20
5
26
dBm
32
mA
-37
dBm
Conducted 50 Ω
RF output power :10 mW
RF output power :10 mW
RF bit rate 9600 bps
Circuit Design, Inc.
OPERATION GUIDE
Receiver part
Item
Conditions
Receiver type
MIN
TYP
MAX
Unit
Remarks
Single superheterodyne
IF frequency
937.5
Max. input level
kHz
0
Receiver sensitivity
Spurious response
dBm
9600 bps
-113
-111
4800 bps
-117
-115
dBm
BER: < 1%
LO IF
50
dB
Ch: 25 kHz
50
dB
RF bit rate 9600 bps
Ch: 12.5 kHz
50
dB
RF bit rate 4800 bps
Intermodulation
f-200k, f-100k
50
dB
Blocking
±2 MHz, ±10MHz
70
dB
< 1000 MHz
-60
-57
dBm
Conducted 50Ω
> 1000 MHz
-60
-47
dBm
Conducted 50 Ω
-110
-20
dBm
RSSI level can be
obtained by command
5
dB
22
mA
Adjacent CH
selectivity
Spurious radiation
RSSI dynamic range
RSSI accuracy
With -110 to -20 dBm
-5
RX current
consumption
Vcc=3.0 V
17
19
Actuation time
Item
MIN
TYP
MAX
Unit
Power on -> Transmission
350
500
ms
Power on -> Reception
350
500
ms
Transmission -> Reception
10
20
ms
Reception -> Transmission
10
20
ms
Start-up
TX/RX switching
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OPERATION GUIDE
4. Terminal specifications
Terminal
No.
Terminal
name
Input/
Output
Input/Output
1
RF
GND
VCC
TXSEL
-
3.0
5.0
0 to 0.15
Vcc-0.4 to Vcc
TX select terminal. Active low.
Transmission is enabled when connecting
this terminal to GND. When this terminal is
active, set the RXSEL terminal to High or
open.
Input
0 to 0.15
Vcc-0.4 to Vcc
RX select terminal. Active low.
Reception is enabled when connecting this
terminal to GND. When this terminal is active,
set the TXSEL terminal to High or open.
5
RXSEL
6
NC
Do not connect.
7
NC
Do not connect.
OG_STD-601B_v20e
-
Power supply terminal.
Connect to the regulated +3.0 to 5.0V DC.
Input
4
-
GND terminal common to RF and VCC.
The GND terminal should be connected to a
wide GND plane.
Input
3
-
Internal equivalent circuit
RF input/ output terminal.
When in the TX mode, this terminal functions
as an RF output and when in the RX mode,
functions as an RF input.
Nominal 50 Ω.
-
2
Input/Output level (V)
Low
Hi
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OPERATION GUIDE
Terminal
No.
Terminal
name
Input/
Output
8-10
GND
11
NC
Do not connect.
12
NC
Do not connect.
Input/Output level (V)
Low
Hi
-
Internal equivalent circuit
-
GND terminal.
All the GND terminals should be connected to a
wide GND plane.
Input
0 to 0.15
Vcc -0.4 to Vcc
UART input terminal
Make sure to perform communication with the
bit rate previously set.
13
RXD
Default settings for UART
communication
Bit rate
19.2 kbps *
Data length
8 bits
Parity
none
Stop bits
1 bit
* Can be changed with the command (See 10.8
"@U" UART bit rate setting).
Output
0 to 0.4
Vcc x 0.67 to Vcc
UART output terminal
Make sure to perform communication with the
bit rate previously set.
14
TXD
Default settings for UART
communication
Bit rate
19.2 kbps *
Data length
8 bits
Parity
none
Stop bits
1 bit
* Can be changed with the command (See 10.8
"@U" UART bit rate setting).
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OPERATION GUIDE
Terminal
No.
Terminal
name
Input/
Output
Output
15
INT
16
NC
DI
DO
GND
0 to 0.15
Vcc -0.4 to Vcc
Transmission data input terminal
Input data corresponding to the RF bit rate set
with the command.
0 to 0.4
Vcc x 0.67 to Vcc
Received data output terminal
Take out data corresponding to the RF bit rate
set with the command.
19-20
Vcc x 0.67 to Vcc
Do not connect
Output
18
0 to 0.4
Internal equivalent circuit
Error output terminal
Outputs High level when receiver image
rejection calibration is required or if an initial
setting error occurs. For error details, check the
error code output from the TXD terminal.
(See 10.12 Error response)
Input
17
Input/Output level (V)
Low
Hi
-
-
GND terminal.
Both GND terminals should be connected to a
wide GND plane.
Logic high at the input terminals: Vcc or open drain.
Logic low at the input terminals: GND
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OPERATION GUIDE
5. Frequency channel table
Default = 74 (0x4A)ch 434.0000 MHz
CH
CH
CH
Dec
Hex
0
00
433.0750
35
23
433.5125
70
46
433.9500
105
69
434.3875
1
01
433.0875
36
24
433.5250
71
47
433.9625
106
6A
434.4000
2
02
433.1000
37
25
433.5375
72
48
433.9750
107
6B
434.4125
3
03
433.1125
38
26
433.5500
73
49
433.9875
108
6C
434.4250
4
04
433.1250
39
27
433.5625
74
4A
434.0000
109
6D
434.4375
5
05
433.1375
40
28
433.5750
75
4B
434.0125
110
6E
434.4500
6
06
433.1500
41
29
433.5875
76
4C
434.0250
111
6F
434.4625
7
07
433.1625
42
2A
433.6000
77
4D
434.0375
112
70
434.4750
8
08
433.1750
43
2B
433.6125
78
4E
434.0500
113
71
434.4875
9
09
433.1875
44
2C
433.6250
79
4F
434.0625
114
72
434.5000
10
0A
433.2000
45
2D
433.6375
80
50
434.0750
115
73
434.5125
11
0B
433.2125
46
2E
433.6500
81
51
434.0875
116
74
434.5250
12
0C
433.2250
47
2F
433.6625
82
52
434.1000
117
75
434.5375
13
0D
433.2375
48
30
433.6750
83
53
434.1125
118
76
434.5500
14
0E
433.2500
49
31
433.6875
84
54
434.1250
119
77
434.5625
15
0F
433.2625
50
32
433.7000
85
55
434.1375
120
78
434.5750
16
10
433.2750
51
33
433.7125
86
56
434.1500
121
79
434.5875
17
11
433.2875
52
34
433.7250
87
57
434.1625
122
7A
434.6000
18
12
433.3000
53
35
433.7375
88
58
434.1750
123
7B
434.6125
19
13
433.3125
54
36
433.7500
89
59
434.1875
124
7C
434.6250
20
14
433.3250
55
37
433.7625
90
5A
434.2000
125
7D
434.6375
21
15
433.33750
56
38
433.7750
91
5B
434.2125
126
7E
434.6500
22
16
433.3500
57
39
433.7875
92
5C
434.2250
127
7F
434.6625
23
17
433.3625
58
3A
433.8000
93
5D
434.2375
128
80
434.6750
24
18
433.3750
59
3B
433.8125
94
5E
434.2500
129
81
434.6875
25
19
433.3875
60
3C
433.8250
95
5F
434.2625
130
82
434.7000
26
1A
433.4000
61
3D
433.8375
96
60
434.2750
131
83
434.7125
27
1B
433.4125
62
3E
433.8500
97
61
434.2875
132
84
434.7250
28
1C
433.4250
63
3F
433.8625
98
62
434.3000
133
85
434.7375
29
1D
433.4375
64
40
433.8750
99
63
434.3125
134
86
434.7500
30
1E
433.4500
65
41
433.8875
100
64
434.3250
135
87
434.7625
31
1F
433.4625
66
42
433.9000
101
65
434.3375
136
88
434.7750
32
20
433.4750
67
43
433.9125
102
66
434.3500
33
21
433.4875
68
44
433.9250
103
67
434.3625
34
22
433.5000
69
45
433.9375
104
68
434.3750
OG_STD-601B_v20e
Dec
Hex
Frequency
[MHz]
Dec
CH
Frequency
[MHz]
10
Hex
Frequency
[MHz]
Dec
Hex
Frequency
[MHz]
Circuit Design, Inc.
OPERATION GUIDE
6. Connection diagram
VCC
DC 3.0 - 5.0V
VCC
PIO
CPU
(Controller)
4: TXSEL
5. RXSEL
PIO
STD-601
TXD
13: RXD
RXD
14: TXD
INT
15: INT
PIO or SO
17: DI
PIO or SI
18: DO
GND
GND
1: RF
3: VCC
2: GND
Example of connection to CPU
* The same VCC should be used for the STD-601 and the controller.
* The length of connection wire between the STD-601 and the controller should be within 20 cm.
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OPERATION GUIDE
7. Block diagram
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OPERATION GUIDE
8. External dimensions
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OPERATION GUIDE
9. Recommended foot print
Do not place traces, ground or components on the mounting surface (above shadow area).
Connect the GND terminals to a wide GND plane. Those GND terminals function as a ground not only for
the power supply but also for RF.
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OPERATION GUIDE
10. Commands and responses
10.1 Control commands & responses
Control command basic format
Prefix ('@') + command name + value + [CR]
Prefix: '@' = 40h, a code that indicates the start of the command string.
Command name: An ASCII code of one character.
Value: An ASCII code of two characters corresponding to each command.
Control response basic format
Prefix ('*') + command name + value + [CR] + [LF]
Prefix: '*'=2Ah, a code that indicates the start of the response string.
Command name: An ASCII code of one character corresponding to the received
command.
Value: An ASCII code of two characters corresponding to each command.
* When issuing commands, unless otherwise stated, make sure that neither TXSEL nor RXSEL is
selected.
*When issuing the default setting commands ('@D','@G','@H', '@O'), confirm that the power supply is
stable. Turning off the power during the command issue may damage the data to be stored.
10.2 "@C"
Frequency channel setting
Sets the channel to be used.
Specify the channel following '@C' with the ASCII code of two characters.
The default setting is 4Ach (434.0MHz). The default channel can be changed with the "@D" command.
Value: '0''0' - '8''8' (ASCII codes indicating the channel numbers of 0 to 136)
Example: Change the channel to 0Fh.
Control command: @C0F
Control response: *C0F
10.3 "@D" Default frequency channel setting
Changes the current and default frequency channel.
Specify the channel following '@D' with the ASCII code of two characters.
The default setting is enabled when the power is turned on again.
Value: '0''0' - '8''8' (ASCII codes indicating the channel numbers of 0 to 136)
Example: Change the current and default channel to 4Dh.
Control command: @D4D
Control response: *D4D
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OPERATION GUIDE
10.4 "@B" RF bit rate setting
Sets the RF bit rate.
Specify the RF bit rate following '@B' with the ASCII code of two characters.
The default setting is 9.6 kbps. The default setting can be changed with the "@G" command.
Value: '4''8' : 4.8 kbps
'9''6' : 9.6 kbps
Example: Change the RF bit rate to 4.8 kbps.
Control command: @B48
Control response: *B48
10.5 "@G" Default RF bit rate setting
Changes the current and default RF bit rate.
Specify the RF bit rate following '@G' with the ASCII code of two characters.
The default setting is enabled when the power is turned on again.
Value: '4''8' : 4.8 kbps
'9''6' : 9.6 kbps
Example: Change the current and default RF bit rate to 4.8 kbps.
Control command: @G48
Control response: *G48
10.6 "@P" RF transmit power setting
Sets the RF transmit power.
Specify the RF transmit power following '@P' with the ASCII code of two characters.
The default setting is 10 mW. The default setting can be changed with the "@H"
command.
Value: '1''0' : 10 mW
'0''5' : 5 mW
'0''1' : 1 mW
Example: Change the RF transmit power to 5 mW. .
Control command: @P05
Control response: *P05
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OPERATION GUIDE
10.7 "@H" Default RF transmit power setting
Changes the current and default RF transmit power.
Specify the RF transmit power following '@H' with the ASCII code of two characters.
The default setting is enabled when the power is turned on again.
Value: '1''0' : 10 mW
'0''5' : 5 mW
'0''1' : 1 mW
Example: Change the current and default RF transmit power to 5 mW.
Control command: @H05
Control response: *H05
10.8 "@U" UART bit rate setting
Sets the UART bit rate.
Specify the UART bit rate following '@U' with the ASCII code of two characters.
The default setting is 19.2 kbps. The default setting can be changed with the "@O" command.
Value: '9''6' : 9.6 kbps
'1''9' : 19.2 kbps
'3''8' : 38.4 kbps
Example: Change the UART bit rate to 9.6 kbps.
Control command: @U96
Control response: *U96
10.9 "@O" Default UART bit rate setting
Changes the current and default UART bit rate.
Specify the UART bit rate following '@O' with the ASCII code of two characters.
The default setting is enabled when the power is turned on again.
Value: '9''6' : 9.6 kbps
'1''9' : 19.2 kbps
'3''8' : 38.4 kbps
Example: Change the current and default UART bit rate to 9.6 kbps.
Control command: @O96
Control response: *O96
Caution: The newly-set default UART bit rate is enabled just after the power is turned on again and
UART communication can not be established with the old UART bit rate anymore.
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OPERATION GUIDE
10.10 "@R" RSSI acquisition (enabled only in the reception)
Reads out the RSSI level.
Input '@R' only without the value.
Example: Reads out the RSSI level.
Control command: @R
Control response: *R64
The absolute value of the RSSI level is returned in hexadecimal.
The RSSI level can be obtained by decimalizing the value part of the control response and
adding "- (minus)" . *R64 is -100 dBm.
* If the '@R' command is issued in any state other than reception, the error response '*E01* will be
returned.
10.11 "@K" Image rejection calibration
Performs calibration on the image rejection of the receiver part. Calibration is required if the
temperature changes more than 20 °C .
If there is a temperature change of more than 20 °C after the last calibration, the error response '*E10'
is returned and High level is output at the INT terminal to warn of the need for calibration. It takes
about 120 ms for calibration.
Example: Performs the image rejection calibration
Control command: @K
Control response: *K
* Even if calibration is not performed, the receiver sensitivity will be maintained but the receiver
characteristics against the image frequency of ' RX frequency -937.5 kHz' may be degraded.
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OPERATION GUIDE
10.12 Error responses
If there is an error in the format of the command issued, an error code of the type shown below is sent
in response.
・
Format
Prefix ('*') + response name ('E') + value + [CR]
Prefix: '*'=2Ah, a code that indicates the start of the response string.
Response name: A single ASCII character 'E'.
Value: a n ASCII code of two characters shown in the error code list.
・Error code list
Value
Error name
Description
‘0’’1’
Command format error
The issued command format is wrong.
‘0’’2’
Out of channel setting range
The specified channel is outside the setting range.
‘0’’3’
Initial setting error
Initialization failed. Turn the power on again.
Command setting error
Communication error between RFIC and CPU
occurs. Perform setting again.
Image rejection calibration
request
Image rejection calibration is needed due to the
temperature change.
‘0’’4’
‘1’’0’
If the error code '03' or '04' frequently occurs, it is possible that the power supply is not stable or the
module is damaged. Please contact Circuit Design, Inc. or the distributors.
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Circuit Design, Inc.
OPERATION GUIDE
11. Command timing
Period when issuing commands and selecting TX/RX are prohibited when turning on power
Control command and response timing
Command
Tre
(Response time)
Unit
Command
Tre
(Response time)
Unit
@Cxx
600
us
@Dxx
8.8
ms
@Bxx
3.5
ms
@Gxx
8.8
ms
@Pxx
700
us
@Hxx
8.2
ms
@Uxx
100
us
@Oxx
77
ms
@R
1.5
ms
@K
100 to 120
ms
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OPERATION GUIDE
Initial setting error output timing
Power on
Power
High level indicates an error
in initial setting.
INT
Error response
at TXD
*E03 or *E04
15 to 500 ms
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OPERATION GUIDE
12. RSSI characteristics
Measurement frequency: 434.0000 MHz / Modulation: Unmodulated
Measurement temperature: 25°C±5°C
RSSI levels were obtained with the @R command.
* RSSI accuracy is within ± 5 dB in the input level range of from -110dBm to -20dBm.
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OPERATION GUIDE
13. RF data format
Data frame structure
A general data frame consists of Preamble, ID code, User data and Data-check and is
transmitted/received as a packet data. The data format below shows the one used for the STD-601
evaluation board.
Preamble
ID code
11001100....
CH
Repeated 0xCC
> 10 ms
1 byte
01
02
User data
03
Data-check
04
Dummy data
CC
ID
4bytes
18 bytes
CRC
2bytes
CC
2 bytes
Example data format
Preamble
A preamble is a dummy data to match the timing between transmission and reception. At the start of data
transmission, the transmitter transmits data including alternate low and high signals for a certain period of
time. A recommended preamble pattern is 11001100....of more than 10 ms (more than 20 ms is better).
ID code
An ID code is a unique code to identify own system from other systems. The receiver determines if the
received data is sent to itself. To avoid erroneous reception, it is recommended to use an ID code with
appropriate length.
User data
A user data is data the user intends to send/receive. To prevent data from being garbled, it is
recommended to use data that has periodical transitions between 1 and 0.
Data-check
A data-check (such as CRC) is used to check if the transferred data has errors or not. The receiver
determines if the received data is valid or not.
Dummy data
Following the data-check, a dummy data can be added as needed.
* The wireless communication of the STD-601 is asynchronous. UART is widely used since it has
advantages of easy data synchronization and periodic data transition with start/stop bits.
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OPERATION GUIDE
14. Image rejection calibration
The STD- 601 uses a low-IF RFIC. Since an image signal occurs at 937.5 kHz below the receiving
frequency in reception, image rejection is performed in the RFIC.
Since image rejection is affected by variation in temperature, calibration is required when the
temperature has changed more than 20 °C after power-on.
If calibration is required, the STD-601 returns an error response of "*E10" via UART and outputs
High at the INT terminal (Request for image rejection calibration).
Calibration can be done with the "@K" command regardless of whether the image rejection
calibration is requested or not. It takes approx. 120 ms.
Re-calibration request is output if the temperature has changed more than 20 °C after the last
image calibration.
* If calibration is not performed on the request, the receiver sensitivity is still maintained but the
receiver's blocking characteristics against the image frequency will be degraded.
* The STD-601 performs temperature monitoring every 200 ms after any command is issued. For
proper operation of the temperature monitoring function to generate a calibration request, a state
where none of the commands are issued is needed for more than 200 ms.
If a command issue cycle of less than 200 ms is repeated, a request for image rejection calibration
cannot be generated.
15. Caution for use in continuous transmission and reception
The STD-601 performs internal VCO calibration for stable operation when it starts transmission or
reception. For continuous transmission or reception, it is required to perform re-calibration of the
VCO periodically, especially under the circumstances of considerable change in temperature. As a
guide, a temperature change of more than 10 °C requires re-calibration. If re-calibration is not
performed, unstable VCO operation may cause PLL unlock that will result in communication error.
Re-calibration can be automatically performed by resetting the TXSEL or RXSEL.
If the STD-601 is used in continuous transmission or reception and temperature monitoring is not
possible, make sure to perform re-calibration periodically (e.g. every 10 minutes) by switching the
TXSEL or RXSEL from Low to High and back to Low again. It takes about 10 ms to switch TX/RX.
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OPERATION GUIDE
16. Lead-free reflow profile
Peak temperature
Temperature ( °C)
260°C max.
217 to 220°C
100 to 180°C
Within 60 s
60 to 120 s
(Preheating)
Preheating
Time (seconds)
Heating
Cooling
Setting standard for reflow profile
1. Peak temperature : < 260°C for less than 10 sec
2. Time over 217-220°C : 60 sec
3. Number of reflow cycles : 1
N2 reflow, conducting reflow soldering in a nitrogen atmosphere, increases the solder flow too
greatly, enabling wicking to occur.
The above profile is an ordinal example. Make sure that the profile is optimized according to the
soldering conditions such as equipment.
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OPERATION GUIDE
Regulatory compliance information
DoC and restrictions for CE
R&TTE Declaration of Conformity (DoC)
Hereby, Circuit Design, Inc., declares that this STD-601 is in compliance with the essential requirements and other
relevant provisions of Directive 1999/5/EC.
The product is in conformity with the following standards and/or other normative documents:
EN 300 220-2, Electromagnetic compatibility and Radio spectrum Matters (ERM); Short Range Devices (SRD);
Radio equipment in the frequency range 9 kHz to 25 MHz and inductive loop systems in the frequency range 9 kHz
to 30 MHz; Part 2: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
Receiver category: 2
EN 301 489-3, Electromagnetic Compatibility and Radio spectrum Matters (ERM); Electromagnetic Compatibility
(EMC) standard for radio equipment and services; Part 3: Specific Conditions for Short-Range Devices (SRD)
operating on frequencies between 9 kHz and 40 GHz.
EN 60950-1, Safety of Information Technology Equipment.
EN 62311, Assessment of electronic and electrical equipment related to human exposure restrictions for
electromagnetic fields (0 Hz-300 GHz).
Place and date of issue:
Nagano, Japan
June 8, 2015
S igned by:
Remark:
This module is for a portable application. The final system integrator will need to conduct full EMC testing
in accordance with EN301 489-3 in the final use configuration.
Also the final system needs to fulfill the safety requirements in the final product configuration.
Cautions:
Antenna
The conformity assessment of the STD-601 was performed using the following antenna:
1/4 λ whip antenna 2.14 dBi
Only antennas with same type and lesser gain can be used with this module. If you use an antenna other
than the recommended antennas, further radio conformity assessment may be required.
Enclosure
To fulfill the requirements of EMC and safety requirements, the STD-601 should be mounted on the circuit
boards of the final products and must be enclosed in the cases of the final products. No surface of the
STD-601 should be exposed.
Exposure to radio frequency radiation
This module must not be co-located or operating in conjunction with any other antenna or transmitter.
Conformity assessment of the final product
The manufacturer of the final product is responsible for ascertaining the conformity of the final product to
the requirements of the R&TTE Directive.
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OPERATION GUIDE
Important notice
 Customers are advised to consult with Circuit Design sales representatives before ordering.
Circuit Design believes the provided information is accurate and reliable. However, Circuit Design
reserves the right to make changes to this product without notice.
 Circuit Design products are neither designed nor intended for use in life support applications where
malfunction can reasonably be expected to result in significant personal injury to the user. Any use of
Circuit Design products in such safety-critical applications is understood to be fully at the risk of the
customer and the customer must fully indemnify Circuit Design, Inc for any damages resulting from any
improper use.
 As the radio module communicates using electronic radio waves, there are cases where transmission
will be temporarily cut off due to the surrounding environment and method of usage. The manufacturer
is exempt from all responsibility relating to resulting harm to personnel or equipment and other
secondary damage.
 The manufacturer is exempt from all responsibility relating to secondary damage resulting from the
operation, performance and reliability of equipment connected to the radio module.
Copyright
 All rights in this operation guide are owned by Circuit Design, Inc. No part of this document may be
copied or distributed in part or in whole without the prior written consent of Circuit Design, Inc.
Cautions
 Do not use the equipment within the vicinity of devices that may malfunction as a result of electronic
radio waves from the radio module.
 Communication performance will be affected by the surrounding environment, so communication tests
should be carried out before actual use.
 Ensure that the power supply for the radio module is within the specified rating. Short circuits and
reverse connections may result in overheating and damage and must be avoided at all costs.
 Ensure that the power supply has been switched off before attempting any wiring work.
 The case is connected to the GND terminal of the internal circuit, so do not make contact between the
'+' side of the power supply terminal and the case.
 When batteries are used as the power source, avoid short circuits, recharging, dismantling, and
pressure. Failure to observe this caution may result in the outbreak of fire, overheating and damage to
the equipment. Remove the batteries when the equipment is not to be used for a long period of time.
Failure to observe this caution may result in battery leaks and damage to the equipment.
 Do not use this equipment in vehicles with the windows closed, in locations where it is subject to direct
sunlight, or in locations with extremely high humidity.
 The radio module is neither waterproof nor splash proof. Ensure that it is not splashed with soot or
water. Do not use the equipment if water or other foreign matter has entered the case.
 Do not drop the radio module or otherwise subject it to strong shocks.
 Do not subject the equipment to condensation (including moving it from cold locations to locations with
a significant increase in temperature.)
 Do not use the equipment in locations where it is likely to be affected by acid, alkalis, organic agents or
corrosive gas.
 Do not bend or break the antenna. Metallic objects placed in the vicinity of the antenna will have a great
effect on communication performance. As far as possible, ensure that the equipment is placed well
away from metallic objects.
 The GND for the radio module will also affect communication performance. If possible, ensure that the
case GND and the circuit GND are connected to a large GND pattern.
Warnings
 Do not take apart or modify the equipment.
 Do not remove the product label (the label attached to the upper surface of the module.) Using a
module from which the label has been removed is prohibited.
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OPERATION GUIDE
Revision History
Version
0.91
1.0
2.0
Date
June 2015
June 2015
Mar. 2016
OG_STD-601B_v20e
Description
Preliminary
Correction of erroneous description (interface voltage), addition of notes (P13,P26)
28
Circuit Design, Inc.
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