
WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
•
and
: These settings define the timing behavior of the
module, when advertising or scanning. The less often the module sends advertising
packets or scans, the less current is consumed.
•
: This setting defines the timing behavior of the module during con-
nection setup and an established connection. The less often the connected modules
communicate with each other, the less current is consumed.
• The on-board nRF52 SoC is running in debug mode. This will not occur if the pins are
connected as described in this manual.
For optimum energy efficiency a user and application specific firmware may be
required.
5.10. Start the direct test mode (DTM)
The direct test mode (DTM) enables the test functions described in Bluetooth
®
Specification.
The purpose of DTM is to test the operation of the radio at the physical level, such as:
• transmission power and receiver sensitivity
• frequency offset and drift
• modulation characteristics
• packet error rate
• inter modulation performance
Conformance tests of the nRF52 with the DTM application are carried out by dedicated test
equipment. To get access to the test functions the
shall be used first. This
command restarts the module in direct test mode. A
message confirms that
the DTM has been started successfully. Now the
can be used to start and stop
the test functions. After a test has been started, it has to be stopped before a next test can be
run.
Example: Transmission test on channel 0 with Bit pattern 0x0F
The goal of this example is to show how the DTM, and in specific the transmission/reception
test, can be run. Here fore we need to connect two modules, start the transmission test on one
module and start the reception test on the second module. In this section, all packet data from
or to the modules is given in
hexadecimal notation
.
All steps are described in the following:
• First, restart the modules in DTM mode.
Order code 2608011x24010
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Version 1.11 , July 2022