MICRF6x0 User Manual for RF TestBench sw v8.1

MICRF505/MICRF506/
MICRF6x0
User Manual for RF TestBench
sw v8.1
Micrel Norway AS
Strandveien 13 * 1366 LYSAKER * Norway
Tel: +47 67 83 08 00 * Fax: +47 67 83 08 10
User Manual for RF TestBench, sw v8.1
Table of contents:
1.
2.
3.
Introduction................................................................................................................. 2
Install RF TestBench................................................................................................... 5
Main window .............................................................................................................. 7
3.1.
Select................................................................................................................... 7
3.2.
Information ......................................................................................................... 9
3.3.
Quick Setup....................................................................................................... 10
3.4.
Complete Setup................................................................................................. 15
3.5.
Control Word .................................................................................................... 17
3.6.
Schematics ........................................................................................................ 19
4. Menu items and dialog boxes ................................................................................... 19
4.1.
ÆRF TestBench................................................................................................ 19
4.2.
ÆRF TestBench ÆDevelopment Board Commands … .................................. 20
4.3.
ÆRF TestBench ÆBit Error Rate … ............................................................... 22
4.4.
ÆRF TestBench ÆFrequency Error Estimator …........................................... 23
4.5.
ÆRF TestBench ÆAdvanced Quick Setup….................................................. 24
4.6.
ÆCalculate A, N, M … .................................................................................... 25
4.7.
ÆCalculate A, N, MÆFind 1…n frequencies, using modulator… ................. 25
4.8.
ÆCalculate A, N, MÆFind 1…n frequencies, using two sets of dividers…... 25
4.9.
ÆLoop Filter .................................................................................................... 26
4.10.
ÆLoop FilterÆFind 2nd Order …............................................................... 26
4.11.
ÆLoop FilterÆFind 3rd Order …................................................................ 27
4.12.
ÆDeviation................................................................................................... 28
4.13.
ÆDeviationÆDeviation Select Help …....................................................... 28
5. Changes in this sw version........................................................................................ 29
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User Manual for RF TestBench, sw v8.1
1. Introduction
This document, “MICRF505/MICRF506/MICRF6x0 User Manual for RF TestBench”
describes how to set up and use RF TestBench. For details on the MICRF505/MICRF506
transceiver or the MICRF505/MICRF506/MICRF6x0 development system: Please refer
to the appropriate data sheet. For the latest updates, visit www.micrel.com.
RF TestBench v8.1 can be used with the following development systems:
MICRF505
MICRF506
MICRF600
MICRF610
MICRF620
The RF TestBench should be self-explaining. Use this document as a reference; it is not
necessary to read it through before starting to use RF TestBench. Note, however, that
some features require a special FW version (firmware = micro controller program). You
can use the “Get FW version” command to get the present FW version of your board
(refer to text below). If you do not have the latest (or wanted) version, please go to
www.micrel.com for a free download.
Also note: Any calculated value in this program should be considered a suggestion. When
transferred to a specific application, always test the RF performance. From v8.1, the
program also suggests component values (like loop filter and antenna matching
components). Note that these values are suggestions only; always test in your own
application.
Important: New features are continuously added to RF TestBench. If a feature
requires a special FW version (micro controller program): That FW version is
explicit mentioned.
Outline of this document:
Following this introduction, an Installation chapter is given. Then the different menu
items and dialog boxes are described. Observe that “MICRF6x0” in this document is a
short-term for “MICRF600/MICRF610/MICRF620”. Finally, the updates in this sw
version are listed. Note: Screenshots of several, but not all, windows are included.
Purpose of the RF TestBench:
RF TestBench can be used with or without a “development board”.
Users of MICRF505/MICRF506 radio transceiver can use the RF TestBench to calculate
fields in the control word to enter into the RF chip.
Typical examples are:
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•
•
•
•
•
•
Get the complete 22-byte long control word to enter into the RF chip
Get the “M”, “A”, “N” dividers for a specific frequency or a set of frequencies
Get the “Mod_A” “Mod_I”, “Mod_clkS” and “RefClk_K” values for a specific
deviation
Get the resulting deviation, bit rate etc for a specific set of parameters
Get component values to use with the MICRF505/MICRF506 (note: no
components for the RF modules 600, 610, 620)
Get external component values for a specific loop filter
Main features:
The main window is split into several areas. There is a “Quick Setup” part (recommended
as a starting point!), a “Complete setup”, and a “Control Word” part. In addition, there is
a “Select” part and an “Information” part, as well as a schematics window.
And finally, there is a menu.
The reader is encouraged to locate these parts in the picture below.
Typically, when pressing any “Calc!” or “Transfer!” button, all the other fields are
updated. In addition, the “Information field” is updated.
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•
Quick Setup. Enter parameters like wanted bit rate and RF frequency. Then see what
the fields in the control word should be. Transfer control word to development board
(where it is stored in EEPROM). The user is encouraged to start here!
•
Complete Setup. Enter “fields” in the control word. Then see the resulting bit rate,
deviation etc. Transfer control word to development board (where it is stored in
EEPROM)
•
Control Word. Enter complete register values (which typically covers several
“fields” of the control word). Then see the resulting bit rate, deviation etc. Transfer
control word to development board (where it is stored in EEPROM)
•
Commands to development board. The set of commands to the board includes start
to transmit 1010…, get firmware version, restart micro controller, reset EEPROM and
read EEPROM
•
Bit Error Rate (BER): Apply a 1010… pattern from an external source, and read out
the number of bits read, the number of bits in error and the resulting bit-error-rate (a
1010… bit pattern, not a random bit pattern is applied. However, this test still gives
an indication of the bit-error level). (This feature requires FW v4 or later)
•
Frequency Error Estimator (FEE): Read out the FEE for different XCO-tune
values, or find the best XCO tune value automatically (this feature requires FW v2
or later)
•
Calculate the A, N, M frequency dividers. Find 1 or several frequencies or set of
frequencies
•
Loop filter. Find values of external components for the loop filter
•
Deviation help. Get suggestions for minimum deviation and filter settings, based on
RF frequency, xtal tolerance etc
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2. Install RF TestBench
The installation of RF TestBench is straightforward:
• Double-click “Setup.exe” and follow the on-screen instructions.
• Note: This program requires “.NET Framework” (Microsoft) to be installed. If
this is not installed on your computer, you will get a message when you start the
installation: You will be asked if you want to download and install the program
“dotnetfx.exe ”. Please do.
To start RF TestBench:
• Click the Start button on the Windows taskbar, click Programs, and then click RF
TestBench.
• When the program starts, a welcome-message is displayed. Please read it, and
then press the OK button. Then the main window will be displayed.
First step:
• As an initial step, make sure to select the correct RF device in the “Select” part of
the main window, refer to figure below. Observe the text in the “Information”
part, which is changed when a new part is selected (if you “select” the already
selected part, all parameters will be reset to default).
• Then use the “Quick Setup” features as a starting point (observe the blue pushbuttons in this area)
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Select
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RF Device
Information
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3. Main window
The “Main Window” is the window that pops up after you have read the welcome
message and pressed the OK button in the Welcome window.
Starting from v.8.1, the Main Window is completely re-organised. Here you will find:
•
•
•
•
•
•
“Select”
“Information”
“Quick Setup”
“Complete Setup”
“Control Word”
“Schematics”.
These items are described in detail below.
In addition to these features, the Main Window holds a menu. The menu items of RF
TestBench are described in the next section.
3.1. Select
In the “Select” area, you select
•
•
•
RF Device
Crystal Frequency
Dev Board Connection
Refer to the text below.
RF Device
This is where the MICRF505 or MICRF506 chip, or a MICRF6x0 RF module, is
selected. If you are using a development board (“dev board”): Always select the part
mounted on the dev board. You don’t have to use a dev board; you can use this program
as a stand-alone program, without connecting your computer to a development board.
Note that the selected RF part determines the default settings. For example, if
“MICRF505” is selected, then the default bit rate is set to 38462bps. If “MICRF600” is
selected, then the default bit rate is 19231 bps. For a complete list of default settings,
simply select a RF part and look at the settings (in “Quick Setup” and “Complete Setup”).
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All settings are reset to default if a new RF part is selected, or if the already selected part
is selected again. Example: You have selected “MICRF505” initially. Then, after you
have made several changes, you might want to reset the settings to their default state.
You can do this by selecting “MICRF505” again.
Whenever you select a RF device, the “Information” window is updated. The schematic
is updated as well – observe: If you select a MICRF6x0 RF module, then there are no
external components, and a simple application drawing is shown.
If you have selected “MICRF505” or “MICRF506”, then you can click in the schematics
to get suggested component values in the “Information” area.
The presently selected RF part is always shown in the “Select” area.
Firmware requirements (dev board micro controller program):
•
•
•
•
•
MICRF505: all fw versions
MICRF506: this feature requires FW v2 or later
MICRF600: this feature requires FW v3 or later
MICRF610: this feature requires FW v4 or later
MICRF620: this feature requires FW v4 or later
Crystal Frequency
This is where you select the xtal to use with the RF part (observe that the MICRF6x0 RF
modules have an on-board xtal).
In many applications, a micro controller (MCU) is used to control the RF part. The MCU
may have it’s own xtal. Note that the xtal you select in the RF TestBench program, is the
one connected to the RF part.
Dev Board Connection
This is where you select the connection to the dev board (and connects to the dev board).
If you are not using a dev board, then select “NO PORT”. Else, select COMi, where i = 1,
2, 3, or 4.
Note: By selecting “NO PORT”, you close the presently selected port, that is: The port
can be used by another program you want to run at the same time.
If the port can’t be opened, you will get a message.
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Before connecting to a dev board, make sure all cables are in place, and that the correct
DIP settings are made on the dev board (refer to Dev board user manual).
3.2. Information
In the “Information” area, the program prints information about:
•
•
•
•
•
The presently selected RF device (when a RF part is selected) and
The “fields” in the control word (when you point to the name of a “field” in
“Complete Setup”) and
All “fields” in a register (when you point to the register address in “Control
Word”) and
Suggested component values for MICRF505/MICRF506 (when you click at the
schematics) and
(Maybe most important!) Calculated/resulting frequencies, bitrates etc when a
“Calc!” or “Transfer!” button is pressed.
The user is encouraged to explore all these features, and to use them frequently!
Note that the “old information” is over-written when “new information” is shown.
You can print out the contents of the “Information” field whenever you want. From the
menu in the main window, select Æ File Æ Print Information …
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3.3. Quick Setup
This is the suggested starting-point (after you have selected a RF part). Simply make your
inputs (“Wanted” input fields) and press the blue “Calc!” button.
Observe the 3 blue buttons (described in detail below):
• “Calc!”
• “Transfer!”
• “More!”
Observe the 3 input-fields below “Wanted” (described in detail below):
• RF centre frequency (= RX- frequency)
• Bitrate
• RF Single-Sided Frequency Deviation
Observe the 3 read-only fields below “Achieved”, which corresponds to the “Wanted”
fields.
Quick Setup area
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”Wanted”
input fields
”Achieved”
output fields
3 blue push buttons
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Input fields:
•
•
•
Wanted RF centre frequency
o Enter the RF centre frequency (in MHz). This will be the frequency used
in receive mode.
Wanted Bitrate
o Enter the wanted “on-the-air” bit rate. This is also referred to as “number
of “signal elements/second”. Note: Based on the “Wanted Bitrate”, the
program will set the type of modulation.
Wanted Single-Sided Frequency Deviation
o Enter the single-sided deviation (in kHz). The frequency for transmitting a
“0” will be the “Wanted RF Frequency” – “Wanted Deviation”, and the
frequency for transmitting a “1” will be “Wanted RF Frequency” +
“Wanted Deviation”
Calc! and Transfer! Buttons:
When “Calc”! or “Transfer” is pressed, then the wanted settings are used to construct the
control word. In addition, several other fields will be used in the calculations (for a firsttime use, keep these unchanged):
•
•
•
•
The selected “RF Device” determines the default settings and the formulas for
constructing the RF frequencies. Make sure the correct RF part is selected.
The selected “Crystal Frequency”. This is used in the formulas
The fields in the control word that are not calc’ed in “Quick Setup”, are collected
from “Complete Setup”. Examples: LNA_by, PA, Sync_en, Mode, Load_en.
From the main menu, some “advanced” settings can be made. Select Æ RF
TestBench Æ Advanced Quick Setup … For example, you can change the
tolerances used when calculating the frequencies (the target will always be the
“Wanted Settings” when the blue Calc! button is pressed.)
If you are using a development board, then you can use the “Transfer!” button to transfer
the resulting control word to the development board.
After you have pressed “Calc”! or “Transfer!” in “Quick Setup”, then all fields will be
updated:
•
•
•
•
The “Achieved” fields in “Quick Setup” will show the results
In “Complete Setup” all field values are updated. The fields that changed value
are shown in red.
In “Control Word” all register values are updated. The registers that changed
value are shown in red.
In “Information”, you will get the resulting frequencies etc.
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More… button:
If you press the “More… ” button, then 2 additional settings are displayed. These are:
•
•
Wanted Comparison frequency
o Enter the wanted comparison frequency (in kHz) here
Wanted Switch-cap cut off frequency
o Enter the wanted cut-off frequency for the switch-cap filter here
At the same time, the button is changed to “Less… ”. Press it to hide the additional
settings.
If the additional settings are visible, then these settings are used in the calculations. If not
visible, then the default settings are used.
It is recommended to use the default settings the first-time you use this program.
To get the figure below, the “More…” button was pressed, then the “Calc!” button was
pressed. Observe the additional fields, the name of the blue button (changed to “Less…”)
and the “Information” field.
”Information” changed after the
“Calc!” button was pressed
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Additional Quick
Setup Input fields
Changed to
”Less...”
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Tolerance:
When calculating the control word, it may be that the “Wanted” values are not
completely found. The tolerances used in the calculations are adjustable, select Æ RF
TestBench Æ Advanced Quick Setup … . Do not change these values until you are
familiar with RF TestBench and the RF part.
Hint 1: Use the “Complete Setup” window to fine-tune the parameters.
Hint 2: If you can accept a higher tolerance than the program uses, try to change the
“Wanted” parameters and calculate again.
Hint 3: Consider using another xtal frequency if the achieved results are not close enough
to your “Wanted” values.
Output Fields:
Always consider any output from RF TestBench a suggestion only!
•
•
•
Achieved RF Frequency
o This will be the achieved frequency used in receive mode
Achieved Bit rate
o Achieved on-the-air bit rate
Achieved Deviation (In “Quick Setup”, the program determines the modulation
type based on the bitrate):
o If VCO modulation is selected (bitrate >20kbps): “Achieved Deviation” is
the achieved single-sided deviation
o If Internal modulation (switching between two sets of A, N, M dividers) is
selected (bitrate <=20kbps): “Achieved Deviation” is the middle of the tx0
and tx1 frequency deviation
If the additional fields are visible:
•
•
Achieved Comparison Frequency (In “Quick Setup”, the program determines the
modulation type based on the bitrate):
o If VCO modulation is selected (bitrate >20kbps): “Achieved Comparison
Frequency” is the achieved comp frequency
o If Internal modulation (switching between two sets of A, N, M dividers) is
selected (bitrate <=20kbps): “Achieved Comparison Frequency” is the inthe-middle value of comp freq for rx, tx0 and tx1
Achieved SC Cutoff
o Achieved switch capacitor filter cut off frequency
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Store and restore values
It is possible to store and restore the present value of the control word. Use Æ File Æ
Open… or Æ File Æ Save As… from the menu in the main window.
The file will be stored as a .txt file.
Hint: Storing (Save As … ) the present control word is a handy way to export the control
word to e.g another user of RF TestBench, or when requesting support. Then the “other
User” can restore (Open … ) the file to get the same values into RF TestBench (assuming
equal RF Device and Crystal Frequency).
Reset to Default values
Simply re-select the RF part, and the default values will be used (values equal to program
start-up values).
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3.4. Complete Setup
Here you can update fields in the control word and calculate the resulting frequencies etc.
Note the difference from “Quick Setup”. Instead of trying to match the “Wanted
Settings”, the program now calculates frequencies etc based on the field values.
By pointing to a field name, the “Information” area will be updated. You will get the
following info:
• Register address and bit-position
• A more descriptive name
• The range of legal values for the field.
Example: By pointing to the “Mode” field name, you get the following information:
Mode: (Reg0, Bit2-1)
Mode of operation:
0: Power Down
1: Standby
2: Receive
3: Transmit
When pressing the “Calc!” or “Transfer!” button in the “Complete Setup” area, the
control word will be calc’ed, and all fields (“Quick Setup”, “Control Word” and
“Information”) are updated.
Note the “Tx-set” and the “Rx-set” of frequency dividers: If “transmit mode” is selected,
then use the Tx-set and v.v for receive-mode. In practice, this will be different for “A, N,
M modulation” only. In this case, you will get/set all 3 sets of A, N, M dividers: The tx0
and tx1 sets as well as the rx set. Also observe that the “A1, N1, M1 set” for rx is not
editable. In receive-mode, the “A0, N0, M0 -set” only is used.
Always make sure that all frequency dividers are > 0 (“A”-dividers can be 0, but for
simplicity: It is suggested to keep all dividers > 0). Setting an N –divider and/or an M divider equal to 0 will result in chip lock.
Like the “Quick Setup” feature, you can
• Store/Restore control word values
• Print “Information” field
• Reset to default
• Transfer to development board
Refer to “Quick Setup” for a description of these features.
If a field value is changed (after pressing any “Calc!” or “Transfer!” button), then the
value will be displayed in red.
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”Complete Setup”
area
”Field”
names
”Field”
values
2 standard color
push buttons
Frequency dividers for
“Transmit” and “Receive” mode
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3.5. Control Word
Here you can update complete registers in the control word and calculate the resulting
frequencies etc. Note the difference from “Complete Setup”: In “Control Word” you
typically change several fields in one operation.
It is possible to change all bits, including “fixed” bits, by entering the address and value
directly. However, unused bits are not editable. Example: To set the value in register
0x0A equal to 0x1F: Enter “0A” in the address field; enter “1F” in the value-field. Then
press the “Calc!” button (the one in the “Control Word” area of the main window).
By pointing to a register address (“Reg #”), the “Information” area will be updated. You
will get the following info:
• General info about “fixed” fields (this information is common for all registers,
even if the selected register does not have any fixed bits)
• Bit-by-bit info for the selected register.
Example: By pointing to register address “00”, you get the following information:
Note: "Fixed" fields are also included. The "fixed" fields are not described in the
data sheet or in this program. Always maintain these bits to their "fixed" value.
Reg0:
Bit7: By_LNA
Bit6: PA2
Bit5: PA1
Bit4: PA0
Bit3: Sync_en
Bit2: Mode1
Bit1: Mode0
Bit0: Load_en
When pressing the “Calc!” or “Transfer!” button in the “Control Word” area, the control
word will be calc’ed, and all fields (“Quick Setup”, “Complete Setup” and
“Information”) are updated.
Always make sure that all frequency dividers are > 0 (“A”-dividers can be 0, but for
simplicity: It is suggested to keep all dividers > 0). Setting an N –divider and/or an M divider equal to 0 will result in chip lock.
Like the “Quick Setup” and “Complete Setup” features, you can
• Store/Restore control word values
• Print “Information” field
• Reset to default
• Transfer to development board
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Refer to “Quick Setup” for a description of these features.
If a register value is changed (after pressing any “Calc!” or “Transfer!” button), then the
value will be displayed in red.
Note that the register value must be entered as a hexadecimal number.
2 standard color
push buttons
Registervalue for Reg #0 (in hex format)
”Control Word” area
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3.6. Schematics
In the “Schematics” area, you will get a typical application circuit.
If you have selected MICRF505/MICRF506:
• By pressing the “+” push button, you will maximize the schematics. This is
achieved by double-clicking in the schematics area as well.
•
From the maximized schematics, you can select to print the drawing. Observe the
paper orientation (use “Landscape”).
•
In the main window, by clicking in the schematics area, you will get a list of
suggested component values in the “Information” area.
If you have selected MICRF6x0:
• The schematics will show a simple application drawing, without any component
suggestions
• (All components are on-board)
4. Menu items and dialog boxes
In the following, the menu items and dialog boxes will be described. A menu item is
always preceded with “Æ” in the text below.
4.1. ÆRF TestBench
This is where you can give commands to the development board, or use some of the
special features like bit-error rate calculator.
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The menu items in “RF TestBench” are described below.
4.2. ÆRF TestBench Æ Commands to Dev Board …
The “Commands to Development Board” window pops up.
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Push Buttons:
•
•
TX1010
o Start to transmit a 1010… pattern. Transmit-mode will be entered, overruling the entered control word. Modulation will stop if another command
is given.
TX Random (this feature requires FW v3 or later)
o Start to transmit a random, Manchester-coded pattern. Transmit-mode will
be entered, over-ruling the entered control word. Modulation will stop if
another command is given.
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•
•
•
•
•
•
•
Get FW v.
o Get the firmware version of the program presently in the micro controller.
New features may be added to new versions of the firmware. Make sure
your firmware version supports the features you want to use in RF
TestBench (if a feature requires a special FW version: It is described with
the feature in this manual).
Reset uC
o Restart micro controller
Reset EEP
o Fill EEPROM with default settings of the control word
Read EEP
o Read the presently stored EEPROM control word.
Use FLASH
o Instruct the development board to use the control word stored in FLASH
program memory of the micro controller. This is identical to the “Default”
settings.
Use EEP.
o Instruct the development board to use the control word stored in EEPROM
of the micro controller. The user-entered control word stored in EEPROM
is used in RF test modes, 2-way link test mode and simple byte transfer
mode.
Get Source
o Find out if the board will use the FLASH or the EEPROM memory (i.e.
the “default” and the “user-entered” control words, respectively)
Output fields:
• FW version
o Present firmware version (micro controller program). FW version 99 is
used for test-programs.
• Control word read from EEPROM
o Presently EEPROM-stored control word
• Source is
o FLASH or EEPROM will be displayed
• Transfer Status
o Messages related to the transfer of commands are displayed here. After
pressing Transfer, “Waiting…” will be displayed. If no response from
board, “Waiting…” will continue to be displayed. If response from board
is received, “Success” or “Error” will be displayed. If Error: Please test
communication cable, power, DIP switch setting and jumpers.
4.3. ÆRF TestBench ÆBit Error Rate …
(This feature requires FW v.4 or later)
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The “Bit Error Rate (1010… test)” window pops up.
This feature requires the use of a development board. NOTE: Not all development
board firmware versions will support this feature.
Before starting, please make sure:
• Make sure the dev. Board is in receive mode. This can be done via the
“Complete Setup … “ feature from the main window
• Make sure a transmitter is present, and transmitting 1010… at the correct
frequency, with the correct deviation and so on. As a starting point, use
another development board to transmit 1010…
Start:
• Press the “Start” button and observe the results. Note the time delay between
pressing the “Start” button and the update of the fields.
Note:
• In the micro controller, the BER procedure will read bytes of the received RF
input. If the byte is equal to 10101010 or 01010101, then it is OK, and 0
errors are detected. If any other byte-value is read, it will be counted as 1
error.
Stop:
• The BER procedure in the micro will stop if the “Stop” button is pressed, or if
any other command is given to the development board.
4.4. ÆRF TestBench ÆFrequency Error Estimator …
(This feature requires FW v2 or later)
The “Frequency Error Estimator” window pops up. Please read all the text in this
window.
This feature requires the use of a development board. NOTE: Not all development
board firmware versions will support this feature.
Read the FEE value by pressing the “Read!” button, or by stepping XCO-tune value
up/down.
Pressing the “Tune” button will start a process to get the best XCO tune value.
Press the “Keep” button to use the XCO tune value from this dialog in the “Quick”
and “Complete” dialogs.
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Please refer to the MICRF505/MICRF506 manual for details on the FEE.
Before using this feature:
• Please read the MICRF505/MICRF506 user manual
• Set the development board in rx, on the wanted frequency and bit rate (Use
“Quick Setup” or “Complete Setup”, press “Transfer”)
• Apply a tx-signal (use another development board or a signal generator)
4.5. ÆRF TestBench ÆAdvanced Quick Setup…
Here you can change the tolerances and several default values. Please read the text in the
window. Note: The “Advanced Options” window may look different from the picture
below.
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4.6. ÆCalculate A, N, M …
This is an aid for determining frequency dividers. You can use the “Quick Setup” as well
(to find 1 frequency / frequency set). Note that the tolerances in the Quick Setup dialog
are fixed, while they are adjustable here. This may give slightly different results.
Experiment with tolerances etc to get the frequency set you want!
Frequencies are calculated based on the following priorities:
1. As close to the RF frequency as possible
2. As close to the comparison frequency as possible
3. If a RF frequency is not a 100% hit, it must improve the best RF frequency found
with > 1kHz, or else the one with the highest comparison frequency is used.
Please make sure that the correct RF dewvice and crystal frequency are selected in the
main window before using these calculators.
4.7. ÆCalculate A, N, MÆFind 1…n frequencies, using modulator…
The “Calculate frequency dividers (A, N, M): Use modulator” window pops up.
1 or a number of frequencies can be calculated.
Fill in wanted frequencies etc and press the “Calc!” menu item. Then see the results.
It’s possible to store the results in a .txt file: Use the ÆFile Æ Save As … menu item
from the menu in the calculator window (not the main window).
Note that new results over-write the old ones in the window.
4.8. ÆCalculate A, N, MÆFind 1…n frequencies, using two sets of
dividers…
The “Calculate frequency dividers (A, N, M): Use two sets of dividers” window pops up.
1 or a number of frequency sets can be calculated.
Fill in wanted frequencies etc and press the “Calc!” menu item. See the results.
It’s possible to store the results in a .txt file: Use the ÆFile Æ Save As … menu item
from the menu in the calculator window (not the main window).
Note that new results over-write the old ones in the window.
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4.9. ÆLoop Filter
This can be used as an aid when determining component values of the external loop filter.
4.10.
ÆLoop FilterÆFind 2nd Order …
Enter parameters and calculate components, or
Enter component values and determine bandwidth and phase margin.
The standard E24 series is included to show available component values.
In addition, a drawing of the loop filter is shown.
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4.11.
ÆLoop FilterÆFind 3rd Order …
Enter parameters and calculate components, or
Enter component values and determine bandwidth and phase margin (set Attenuation = 0
if calc’ing Bandwidth and Phase Margin.)
The standard E24 series is included to show available component values.
In addition, a drawing of the loop filter is shown.
Note the achieved results with the given components.
In the figure below, loop filter components are entered, then the “Determine
Bandwidth/Phase Margin!” button is pressed. In this case, the 3 read-only fields are not
updated.
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4.12.
ÆDeviation
This is an aid for getting an idea of what the deviation and filter settings should be
4.13.
ÆDeviationÆDeviation Select Help …
Enter values and calculate.
The formulas used are shown in the window.
Note that the resulting “beta” will be higher than the input. The entered beta is considers
a “minimum beta”.
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5. Changes in this sw version
NOTE: The list below is simply a randomly ordered list of changes/updates from version
07.
2005 12 19 PKB
• New Installation procedure (double-click “setup.exe”)
• Completely re-organised main window
• Schematics and component suggestions
• In Loop filter calculator: Possible to input component values and calculate the
resulting bandwidth and phase margin.
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