Laird RAMP User manual

RAMP Development Kit
User’s Guide
Version 4.0
[e-mail]
www.lairdtech.com/wireless

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REVISION HISTORY
Version
Date
Changes

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Contents
Revision History .............................................................................................................................................. 2
Contents ........................................................................................................................................................ 3
Overview ........................................................................................................................................................ 4
Hardware ....................................................................................................................................................... 4
SDK Board.................................................................................................................................................. 4
Interfacing the SDK Board to Other RS-232 Hardware................................................................................ 9
Interfacing the SDK Board to RS-485 Equipment ........................................................................................ 9
Power Requirements .................................................................................................................................. 9
Software....................................................................................................................................................... 10
USB Software Installation ......................................................................................................................... 10
SDK Software Installation ......................................................................................................................... 10
PC Settings............................................................................................................................................... 11
Configure................................................................................................................................................. 12
Terminal/Chat .......................................................................................................................................... 14
Range Test ............................................................................................................................................... 15
Command................................................................................................................................................ 16
Troubleshooting ........................................................................................................................................... 18

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OVERVIEW
This document contains information about the hardware included as part of a Laird OEM Transceiver System
Developer Kit (SDK).
The SDK is designed to allow flexibility at the hardware interface level so that the SDK can be interfaced to
the OEM product, to a PC for performance testing, or to any other device that supports +5/3.3V TTL, RS232,
RS485, or USB interface signals.
The SDK is a complete, integrated package that contains all the hardware, software, and documentation
needed to integrate an OEM transceiver quickly and simply.
The SDK includes the following:
SDK interface boards (2)
AC power adapters (2)
DB9 to DB9 cables (2)
USB cables (2)
Omni-directional dipole antennas with a 5” pigtail and MMCX connector (2)
Other antennas are available for testing
Card with software utilities and documentation download information
HARDWARE
SDK Board
The SDK board is provided so the developer can use a standard PC interface to operate the transceivers and
to aid in system integration. As shown in Figure 2 below, there are many features that enhance the
functionality and usability of this board. It uses +5V TTL, RS232, RS485, and USB data formats for interfacing
with the transceiver. The configuration and operation of the SDK board is continuously shown by the LEDs
located on the edge of the board. See Table 1 (Status LEDs) and Table 3 (Switch and jumper settings) for
definitions of the LEDs and switches.
Figure 1: SDK board assembly drawing

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Table 1: Status LEDs
LED
Definition
+VCC
Lights when power is applied to the serial adapter board.
Low Power
Monitors the 5 volt supply and lights when the supply dips below 4.8 volts.
Reset
Lights when the Reset line to the processor is High , resetting the transceiver.
TxD
Lights when the TXD line is Low ; flashes rapidly when data is transmitted from the
transceiver to the host.
RxD
Lights when the RXD line is Low ; flashes rapidly when data sent by the host is received by
the transceiver.
Forced 9600
Recovery
Lights when the 9600 Baud line is Low ; shows that the FORCED CONFIGURATION jumper
is set to force the transceiver to 9600 Baud. The transceiver must be reset before it is
forced to 9600.
Status 1
If used with a client transceiver, lights if the client transceiver is in range of a server
transceiver with the same system ID and channel number. If used with a server
transceiver, always lights when the server is powered in normal mode and is ready to
accept data.
Status 2
Reflects the state of the Command/Data pin (AC4490, AC4486, AC4424, AC4790,
AC4868), the TE pin (AC3124, AC1524) and the Pktmode pin (AC5124). This is
controlled by the PC RTS pin when the Program Mode/Normal Mode switch is set to
Program Mode . Lights when this pin goes Low .
Table 2: LEDs – AC4490 only section (includes AC4486, AC4790, and AC4868)
LED
Definition
Potentiometer/AD In
This varies the voltage (0 – 3.3 V) presented to the AD In pin (pin 18).
Gen Out 0 LED
Lights when the GO0 pin (pin 1) is Low .
Gen Out 1 LED
Lights when the GO1 pin (pin 9) is Low .
Gen In 0 Pushbutton
When depressed, forces the GI0 pin (pin 4) Low .
Gen In 1 Pushbutton
When depressed, forces the GI1 pin (pin 14) Low .
DA_Out
Probe point that provides a location for measuring the DA_Out pin (pin 19).
GND
Probe point that provides a GND reference location.
Table 3: Switch and jumper settings
Switch
Definition
Program Mode/
Normal Mode (S6)
When this switch is moved to the Program Mode position, the RTS pin from the
DB9/USB connector is connected to the Command/Data pin (AC4490,
AC4486, AC4424, AC4790, AC4868), the TE pin (AC3124, AC1524), and the
Pktmode pin (AC5124) of the transceiver. RTS of the transceiver is also
connected to GND. This allows the SDK software to control these pins with RTS
always enabled.
RESET (S1)
When this pushbutton is pressed, the transceiver hardware performs a soft
reset.

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Switch
Definition
WR ENABLE (S2)
When this pushbutton is pressed, it takes the Write Enable pin (AC4424,
AC5124, AC3124, AC1524) or G11 pin (AC4490, AC4486, AC4790, AC4868)
Low .
This button must be pressed and held during the write process for
AC5124, AC3124, AC1524, and AC4424 product families.
RS485 or TTL Radio
If using a transceiver module fitted with a RS-485 interface chip, RS485 Radio
should be selected. This converts the transceiver’s RS-485 interface to serial,
which is then converted to the interface selected by the COMM SELECT
jumper.
If not using a transceiver module fitted with a RS-485 interface chip,
TTL Radio
should be selected.
COMM SELECT (J12)
When this jumper is moved to the RS232 Enable position, RS-232
communication is enabled through the DB9 connector (J2).
When this jumper is moved to the
RS485 Enable position, RS-485
communication is enabled through the RS-485 header pins.
When this jumper is moved to the Loopback Mode position, the transceiver
TxD pin is tied to the transceiver RxD pin. This is only valid for AC5124,
AC4424, AC4486, AC4490, AC4790, AC4868 products. RST mode must be
disabled on the transceiver when Loopback Mode is enabled. This mode is not
compatible with RS485 Radio selection.
RADIO VOLTAGE (J9)
When this jumper is moved to the +5V Radio position, the transceiver is
powered with 5 volts.
When this jumper is moved to the
+3.3V Radio position, the transceiver is
powered with 3.3 volts. The AC4x90-1000, AC4868, and AC4x90-1x1 must
have this jumper set to 3.3 volts.
Special care should be taken when setting this jumper. An improper setting
can cause catastrophic damage to the transceiver.
FORCED
CONFIGURATION (J11)
When this jumper is moved to the Normal Operation position, the transceiver
communicates at the baud rate configured in the EEPROM.
When the jumper is moved to the Forced 9600 Recovery position, the
transceiver interface baud rate is forced to 9600 baud upon reset.
This is for
EEPROM recovery only and should not be used in normal operation.
POWER SOURCE (J7)
When this jumper is moved to the Power Conn position, power is supplied to
the SDK board through the power connector (J4).
When this jumper is moved to the
Batteries position, power is supplied to the
SDK board through the two AA battery sockets on the bottom of the SDK
board.
Special care should be taken when selecting batteries to power the SDK.
High
quality alkaline batteries should be used.
Do not mix battery types or batteries
that have been used unequally as performance could suffer. Four alkaline
batteries produce a voltage of six volts. A minimum of 5.5 volts is required to
power the SDK board. Power should be constantly monitored when using

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Switch
Definition
battery power.
If USB Power is selected, the transceiver and development board receives
power from the USB port.
USB power should only be used for AC4486,
AC4490, AC4790, and AC4868 product families. Most USB ports can only
supply 500 mA of power max, therefore it is recommended that USB power
only be used with transceivers that draw less than 300 mA peak. Though PCs
should have over-current protection for their USB ports, drawing too much
current through the USB port has the potential to cause damage to the PC and
should be avoided.
Table 4: DB9 (J2) signal definitions
J2 Pin #
J1 Pin #
Signal Name
Description
Direction
1
36
DCD
Data Carrier Detect
I
2
14
RXD
Receive Data
I
3
16
TXD
Transmit Data
O
4
34
DTR
Data Terminal Ready
O
5
1, 20, 21, 40
GND
Ground
6
32
DSR
Data Set Ready
I
7
27
RTS
Request to Send
O
8
23
CTS
Clear to Send
I
9
19
RI
Ring Indicator
I
Note: I/O direction is relative to the PC.
Table 5: SDK board to transceiver pin definitions
J2
Pin
#
Type
AC5124
Pin #
AC5124
Signal
Name
AC1524/
AC3124/
AC4424/
AC4490/
AC4486/
AC4868
Pin #
AC1524/
AC3124
Signal
Name
AC4424
Signal
Name
AC4490/
AC4486
Signal
Name
AC4790
Signal
Name
AC4868
Signal
Name
1
GND
1
GND
5
GND
GND
GND
GND
GND
2 I 2 PKTMODE 17
TE
Command/
Data
Command/
Data
Command/
Data
Command/
Data
3
VCC
3
VCC
10
VCC
VCC
VCC
VCC
VCC
4
NC
4
NC
-
NC
NC
NC
NC
NC
5
VCC
5
VCC
-
NC
NC
NC
NC
NC
6
NC
6
NC
-
NC
NC
NC
NC
NC
7
NC
7
NC
-
NC
NC
NC
NC
NC
8
NC
8
NC
19
NC
NC
DA_Out
NC
DA_Out
9
NC
9
NC
-
NC
NC
NC
NC
NC
10
NC
10
NC
-
NC
NC
NC
NC
NC

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J2
Pin
#
Type
AC5124
Pin #
AC5124
Signal
Name
AC1524/
AC3124/
AC4424/
AC4490/
AC4486/
AC4868
Pin #
AC1524/
AC3124
Signal
Name
AC4424
Signal
Name
AC4490/
AC4486
Signal
Name
AC4790
Signal
Name
AC4868
Signal
Name
11
O
11
RSSI
13
RSSI
RSSI
RSSI
RSSI
NC
12
NC
12
NC
-
NC
NC
NC
NC
NC
13
NC
13
NC
-
NC
NC
NC
NC
NC
14
O
14
TXD
2
TXD
TXD
TXD
TXD
TXD
15 O 15 In Range 20
In Range
In Range
In Range
Session
Status
In Range
16
I
16
RXD
3
RXD
RXD
RXD
RXD
RXD
17
I
17
RI_In
-
NC
NC
NC
NC
NC
18
NC
18
NC
-
NC
NC
NC
NC
NC
19
O
19
RI_Out
9
NC
NC
GO1
GO1
GO1
20
GND
20
GND
18
RE
NC
AD_In
AD_In
AD_In
21
GND
21
GND
-
NC
NC
NC
NC
NC
22
I
22
DCD_In
-
NC
NC
NC
NC
NC
23
O
23
CTS
7
CTS
CTS
CTS
CTS
CTS
24
NC
24
NC
NC
NC
NC
NC
NC
25
NC
25
NC
NC
NC
NC
NC
NC
26 I 26 BDSEL 12
Test Mode/
Packet Frame
9600 Baud/
Packet
Frame
9600 Baud
9600 Baud
9600 Baud
27
I
27
RTS
8
NC
RTS
RTS
RTS
RTS
28
NC
28
NC
NC
NC
NC
NC
NC
29
NC
29
NC
NC
NC
NC
NC
NC
30
NC
30
NC
NC
NC
NC
NC
NC
31
NC
31
NC
NC
NC
NC
NC
NC
32
O
32
DSR
6
Hop Frame
Hop Frame
Hop Frame
NC
Hop Frame
33
NC
33
NC
NC
NC
NC
NC
NC
34
I
34
DTR
4
NC
NC
GI0
GI0
GIO
35
NC
35
NC
NC
NC
NC
NC
NC
36
O
36
DCD_Out
1
NC
NC
GO0
GO0
GO0
37 I 37
Write
Enable
14
Write Enable
Write
Enable
GI1
GI1
GI1
38
I
38
µP_Reset
15
µP_Reset
µP_Reset
µP_Reset
µP_Reset
µP_Reset
39
VCC
39
VCC
11
VCC
VCC
VCC
VCC
VCC
40
GND
40
GND
16
GND
GND
GND
GND
GND
I = Input to the transceiver
O = Output from the transceiver
NC = No Connection (though there is an internal connection in some instances; this pin should be left
disconnected)
Note: The 40-pin header (J1) on the SDK board maps directly (pin-for-pin) to the 40-pin connector (J3).

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Interfacing the SDK Board to Other RS-232 Hardware
The development kit serial board is defined as DCE (Data Communications Equipment). DCE is wired to
interface directly with DTE (Data Terminal Equipment). Typically, DTE is defined as a PC and DCE is defined as
a peripheral. To interface DCE to other DCEs, or DTE to other DTEs, a null modem is required. The null
modem swaps pins to convert a DCE to a DTE and vice-versa. Normally, a null modem consists of a female
and a male DB9 connector. A typical null modem configuration is shown in Table 6.
Table 6: DTE, DCE, and Null modem signal definitions
DCE
Pin #
DCE Signal
Name
DCE
Direction
DTE
Pin #
DTE Signal
Name
DTE
Direcion
Null Modem
Female DB9
Null Modem
Male DB9
1
DCD
O
1
DCD
I
1
4 or NC
2
TXD
O
2
RXD
I
2
3
3
RXD
I
3
TXD
O
3
2
4
DTR
I
4
DTR
O
4
6 and 1 or NC
5
GND
5
GND
5
5
6
DSR
O
6
DSR
I
6
4 or NC
7
RTS
I
7
RTS
O
7
8
8
CTS
O
8
CTS
I
8
7
9
RI
O
9
RI
I
9
NC
Interfacing the SDK Board to RS-485 Equipment
The SDK serial board has been designed to interface to RS-485 equipment. If such operation is desired, the
COMM Select jumper should be set to RS485 Enable. The RS-485 circuitry used by the SDK board has been
specially designed to negate the requirement for a DE/RE signal. Thus, the receiver is always enabled unless
the transceiver has something to send to the OEM host. The OEM must ensure that the OEM host does not
send data at the same time as the transceiver; otherwise a RS-485 contention occurs because the RS-485
hardware is half duplex.
Table 7: RS-485 header pins
RS-485
Pin Name
Description
A TRUE
The non-inverted form of the serial data. This pin is at rest High.
B INVERT
The inverted form of the serial data (an exact inversion of A TRUE). This pin is at rest Low.
GND
GND
+5V
This is regulated 5V output from the serial board for general purpose use. A maximum of
100 mA should be drawn through this node.
Power Requirements
The serial board employs a National LM2940 linear regulator to regulate the incoming voltage to 5VDC. Due
to heat dissipation limitations and current requirements, a maximum of 10VDC should be present at
connector J4. A minimum of 5.5V should also be present at the connector.

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SOFTWARE
USB Software Installation
To install the USB software, follow these steps:
1. Disconnect the SDK hardware from the USB port of the PC (if it is currently connected).
2. Close any open USB driver installation menus.
3. Locate the RAMP product page on the Laird website:
www.lairdtech.com/ramp > Product Information
4. Scroll down to the RAMP RF Development Kits section.
5. Click the USB Drivers link to download the USB drivers .zip file.
SDK Software Installation
To install the SDK software, follow these steps:
1. Locate the RAMP product page on the Laird website:
www.lairdtech.com/ramp > Product Information
2. Scroll down to the RAMP RF Development Kits section.
3. Click the Configuration Utility link to download the DVK software .zip file.
4. Install the development kit software. The first time the software is run, the following message displays:
5. Click OK.
The software attempts to open COM1 of the PC. If there is a conflict or the port does not exist, the
software shows the port as unavailable. This may occur for one of the following reasons:
There is other software running that has control over the COM1 port. Locate this software and
shut it down while running the Laird OEM software.
The PC does not have a COM1 port or the port has been disabled.

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PC Settings
The first time the Configuration Utility is run, the PC Settings tab automatically displays (Figure 2)
Select the appropriate product in the
Product drop
-down menu to
automatically set the default baud rate
for the applicable product family.
If the COM port is listed as unavailable,
select a different CO
M port from the
Port drop
-down menu.
The software can use two serial ports if
the Enabled checkbox is selected.
Port1/Port2 Settings
The software can control up to two
COM ports including virtual COM ports
which physically map to USB or
Ethernet ports.
Select the applicable
port (COM1 through COM 16) from
the Port drop
-down menu.
Figure 2: PC Settings tab
Options
Save Settings on Exit
When enabled, all changes made to the Settings page are automatically loaded the next time the software is
run. Otherwise, changes are discarded.
Read/Write with AT Commands
When enabled, the software uses AT commands for its read/write EEPROM functions instead of the standard
configuration commands. This is only available for the AC5124 (when enabled in EEPROM), AC4424,
AC4486, AC4490, AC4790, and AC4868. It is ignored for all other product modes.
Status Bar
Located at the bottom of the software, the status bar gives the state of Port 1, RTS Port 1, CTS Port 1, Port 2,
RTS Port 2, and CTS Port 2 lines. When the text appears black, the current state displays. When the text
appears grey, the current state is not displayed. The text shown in the bottom status bar gives a simplified
status of the current, pending software process. The software has no pending process when
Communications
Idle
is displayed.
About
Click About to determine the software revision number and Laird contact information.
Help
Click Help to access the Help files.

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Configure
The Configure tab provides a GUI representation of the 256 byte EEPROM contents within the radio.
The same data is shown in a full
hexadecimal dump of the EEPROM in the
EEPROM Editor view. Figure 3 displays the
configure tab as it appears until a radio is
successfully read.
Note:
All Configure text boxes have a
Hex button located to the right
of the box. When selected, you
are able to choose between the
Hexadecimal and Decimal
numbering format. When the
program is restarted, all text
boxes revert back to
Hexadecimal.
Figure 3: Configure tab
Read Radio
To update the Configure and EEPROM
Editor View pages with the EEPROM
contents of a radio currently connected to
the proper port on the PC, click
Read
Radio
. Figure 4 displays a Configure page
after a transceiver has successfully been
read.
Write Radio
After making changes to the controls on
the Configure page, click
Write Radio
to
save the changes to the radio EEPROM.
Port 1/Port 2
Whichever is selected (Port 1 or Port 2)
determines which port the Read Radio and
Write Radio use to communicate.
Figure 4: Configure tab after a radio has been successfully read

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Calc Baud
The Baud drop-down menu includes all standard PC baud
rates. To select a non-standard baud rate, click
Calc Baud
.
To calculate the settings for a specific baud, type that rate
into the Desired Baud Rate text box and click
Calculate
. If
the baud rate is not supported by the radio, an error
message displays. Otherwise, the baud rate information
displays and the Update button is enabled.
Click
Update
to allow the displayed Actual Baud Rate to be
displayed in the Baud window on the Configure page of
the software.
Click
Cancel
to ignore the changes.
Note: The Actual Baud Rate does not always match the Desired Baud Rate. However, the program
verifies that the Desired Baud Rate is within 3% of the Actual Baud Rate (as required by the radio).
GUI View/EEPROM View
When the EEPROM Editor View button is
selected, the Configure window changes
from the GUI view to the EEPROM Editor
view (a hexadecimal dump of the full 256
byte EEPROM resident on the radio).
(Figure 5)
Figure 5: EEPROM Editor view

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
Compare EE –
The Compare EE button allows you
to compare two or more saved EEPROM files. This
can be useful when analysing the performance of
two or more transceivers. (Figure 6)
Figure 6: EEPROM comparison
Load File – The Load File button allows you to load a previously-created file to restore an EEPROM to a
former state.
Save to File – The Save to File button allows you to save an EEPROM to a file. The saved EEPROM can
be restored at a later time.
Print – Click to print the EEPROM dump window or the GUI view.
Terminal/Chat
The
Terminal/Chat
tab (Figure 7) allows you to send small
data packets between two COM ports. As data is
received, it is added to the appropriate Port window.

Send –
Click Send to send the data in the text box
out to the selected port(s). The current Window
user’s username is also sent with the data.

ASCII Display or Hexadecimal Display –
Select the
applicable radio button to display the newly-
received data in ASCII format or Hexadecimal
format.

Clear –
Click
Clear
to erase all text that is displayed
in the text windows.

Font –
Click
Font
to change the font used in both
text boxes.
Figure 7: Terminal/Chat tab
Print – Click Print to print the text in either of the two Port text boxes.
Save to File – Click Save to File to save the text in either of the two text boxes to file.

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Range Test
The Range Test tab allows you to send data packets
between two radios and it reports the number of
successes and errors. (Figure 8)

Test Selection
– There are six test options; each
uses one of the following hardware setups:
Setup #1:
One radio is plugged into a serial or
USB port on a PC. The second radio is
plugged into a separate power supply
and has the Comm Select jumper set
to
Loopback .
Setup #2:
One radio is plugged into a serial or
USB port on a PC. The second radio is
plugged into a different serial or USB
port on the same computer.
Setup #3:
One radio is plugged into a serial or
USB port on a PC. The second radio is
connected to a serial or USB port on
another PC.
Figure 8: Range Test tab
If using two PCs for the test, the software on both sides should have the second COM port disabled on
the Settings tab.
Port 1 Action
Port 2 Action
Hardware Setup
Port 1 Port 2
Tx
Rx
2
Port 2 Port 1
Rx
Tx
2
Port 1  Port 2
Tx/Rx
Tx/Rx
2
Port 1 Send Only
Tx
Not Applicable
3
Port 1 Receive Only
Rx
Not Applicable
3
Port 1 Loopback
Tx/Rx
Not Applicable
1
Transmit Packet Selection – This section allows you to select the data packet used to perform the range
test. You may either create data of a specified byte length or load your own text or configuration file.
Test Type – Select one of the following to determine the type and length of the test:
Test Type
Description
Continuous
Test runs until stopped
Timed
Test runs for a specified time
Number of Runs
Test runs for a specified number of runs
Single Step
Test runs for a single step
Break on Error
Test runs until an error occurs
Receive Packet Display – This section allows you to select how the received packets are displayed.
Received packets can be displayed in ASCII or Hexadecimal format, marked with a time stamp, and/or
displayed only when an error occurs.
Timing –This section allows you to modify the Transmit and Receive timing of the test.
-Tx Delay – Allows you to modify (in ms) the delay between transmissions.
-Rx Timeout – Allows you to specify the total amount of time that you want a packet to be
displayed.

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Test Results –Displays the following test results:
-Runs – Displays the number of runs that occurred during the test whether or not errors occur.
-Errors – Indicates the number of errors that occurred during the test.
-Percentage Good – Displays the percentage of successful test results.
-Approximate Throughput – Uses a rough calculation to display the amount of data transferred in
bits per second (bps).
Port 1/Port 2 – The Port 1 and Port 2 text boxes display the Transmit and Receive activities for the
applicable port. Use the View Tx Packets/View Rx Packets radio buttons to choose which to display.
Save to File – Click to save the contents of the Received Data text box.
Clear –Click to return all statistics and errors back to zero. This button can be used while a test is
running.
Stop – Click to halt the current test. This function does not clear the statistics and errors.
Run (F10) – Click Run or F10 to begin a test.
Command
The Command tab is used to send
configuration (CC – product family
dependent) and AT commands (product
family dependent) to the radio on the
selected port (Figure 9).

Command Name –
The length of the
command name is not restricted and
is not a software requirement.

Commands –
Displays the
commands that are sent to the radio.

Radio buttons –
The software sends
one command at a time. Select the
desired command by clicking the
applicable radio button.

Optional Comments –
The length of
the comment is not restricted and is
not required by the software. The
command description/comment is
displayed when that command’s
radio button is selected.
Figure 9: Command tab

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
Received Data Port1/Port2 –
Data
received over the serial port while on
the Command tab (whether or not in
response to a command) is displayed
in the Received Data window in
hexadecimal format (Figure 10).
Figure 10: Received Data Ports text boxes
AT Enter/Exit Command Mode – When selected, the radio enters Enter/Exit AT Command mode to
complete the selected command by creating a virtual version of the Command/Data Line.
-Enter AT Command mode – Asserts this virtual line Low (to enter Command mode)
-Exit AT Command mode – Asserts this virtual line High (to enter Data mode)
Perform Reset After Completion – When enabled, the radio is reset after the selected command is
complete.
Note: This feature is supported by all product families except the AC1524 and AC3124 families.
Port 1/Port 2 Buttons –Determines the port for which received data is displayed.
Clear –Clears the Received Data screens.
Load –Click to load a different command file onto the Command tab.
Save –Click to save current changes to the Command tab.
Send Comm –Click to send the selected command by way of the selected port.

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TROUBLESHOOTING
Issue
Solution
No lights on the SDK board. Check the power connection. The VCC LED should be lit when
power is applied to the serial board.
Ensure that there is nothing shorting the VCC to GND and that
the radio is properly seated into the interconnect board.
Ensure that all jumpers are installed correctly.
Radio EEPROM cannot be read
by the .exe file.
Verify that power is applied and that the serial/USB cable is
connected to the serial board and the PC. Try resetting the radio
with the Reset button.
Verify that the correct serial/USB port is selected in the software
(Port 1 or Port 2).
Verify baud rate and port address on the
PC
Settings
tab.
Ensure that the Program Mode/Normal Mode switch is set to
Normal Mode
and
Read/Write with AT Commands
is selected on
the PC Settings tab.
Check to make sure the
FORCED CONFIGURATION
jumper is in
the correct position.
Verify the
COMM SELECT
jumper setting.
Writing to the EEPROM fails. Press and hold the Write Enable button before writing to the
EEPROM if using the AC1524, AC3124, AC4424, and AC5124
product families. Reset the radio (using the Reset push-button)
before retrying.
EEPROM can be read/viewed
with the OEM software, but data
cannot be sent between the two
transceivers using the .exe file.
Ensure that the Status 1 LED is not turned on. If so, find out
what is driving RTS
Low
(and turning on the Status 1 LED); either
slide the Program Mode/Normal Mode switch to
Normal
or
cause RTS to go
High
.
If the Status 1 LED is not lit, reset both radios.
Make sure both transceivers have the same Channel Number
and System ID (if applicable).
Check all cables and connections.
Ensure that one radio is a server and one is a client (excluding
AC4790).
Check radio addressing.
Ensure that the radios are separated by at least ten feet.
Make sure the In Range LED is lit on both transceivers.
Packets can be sent between
both radios using the .exe file,
but cannot be sent from
software or hardware not
supplied by Laird.
Use the Hardware section of this guide to determine if a null-
modem adapter is required for interfacing to the hardware.
Ensure that the baud rate of the radios matches that of the OEM
Host hardware.

Ensure that the Status 1 LED is not turned on. If so, find out

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what is driving RTS
Low
(If so, find out what is driving RTS
Low
(and turning on the Status 1 LED); either slide the Program
Mode/Normal Mode switch to
Normal
or cause RTS to go
High
.
A Framing or Data Timeout error
occurs while running a Range
test.
Verify that the baud rate on the PC Settings tab matches that of
the radio’s EEPROM.
Verify that both radios are powered on and that the Port
settings are correct.
Verify that the In Range LED is lit on both radios.
Note: If these troubleshooting tips do not resolve the problem, please contact the support engineer
referenced on the cover sheet in the SDK binder. Please use our toll free support number at (800)
492-2320, option 2. Technical support hours are Monday through Friday, 8:00 AM to 5:00 PM
Central Standard Time.

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Laird Technologies is the world leader in the design and manufacture of customized, performance-critical
products for wireless and other advanced electronics applications. Laird Technologies partners with its
customers to find solutions for applications in various industries such as:
Network Equipment
Telecommunications
Data Communications
Automotive Electronics
Computers
Aerospace
Military
Medical Equipment
Consumer Electronics
Laird Technologies offers its customers unique product solutions, dedication to research and development, as
well as a seamless network of manufacturing and customer support facilities across the globe.
CONN-GUIDE_RAMP-DKV
Copyright © 2013 Laird Technologies, Inc. All rights reserved. The information contained in this manual and the accompanying software programs are copyrighted and all rights
are reserved by Laird Technologies, Inc. Laird Technologies, Inc. reserves the right to make periodic modifications of this product without obligation to notify any person or entity
of such revision. Copying, duplicating, selling, or otherwise distributing any part of this product or accompanying documentation/software without the prior consent of an
authorized representative of Laird Technologies, Inc. is strictly prohibited.
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This material is preliminary. Information furnished by Laird Technologies in this specification is believed to be accurate. Devices sold by Laird Technologies are covered by the
warranty and patent indemnification provisions appearing in its Terms of Sale only. Laird Technologies makes no warranty, express, statutory, and implied or by description,
regarding the information set forth herein. Laird Technologies reserves the right to change specifications at any time and without notice. Laird Technologies’ products are
intended for use in normal commercial and industrial applications. Applications requiring unusual environmental requirements such as military, medical life-support or life-
sustaining equipment are specifically not recommended without additional testing for such application.
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