Tescom TC-3000C - Page 230

Appendix B. RF Test Cases of the TC-3000C
230
In Transmitter test and Loop back test mode whitening is disabled and the payload’s bit pattern
is PRBS9.
Test Procedure
1. If the DUT is not connected then the tester creates connection via access procedures
(paging and inquiry if necessary).
2. If the Test Mode parameter is equal to “Transmitter test” or “Loop back” then the tester will
activate test mode (if the test mode is not activated yet) and will set all necessary
parameters of the test mode depending on the parameters Test Mode, Packet type and
Hopping mode. The LMP_test_control command is used to set the parameters in the DUT.
3. The tester checks whether the DUT transmits at maximum power. If not and the DUT
supports power control, then the tester will consecutively send LMP_incr_power_req
requests until the LMP_max_power response would be received from the DUT. The time
delay between two consequential LMP_incr_power_req requests depends on the
Pow.SetTime parameter (to modify the value use: Menu  Configuration  DUT 
More3/5  Pow.SetTime, default value is equal to 1 second).
4. For the given channel frequency the tester records the average power P
GFSK
over at least
80% of the GFSK portion of the packet and records the average power P
DPSK
over at least
80% of the DPSK portion of the packet. The path losses value is added to the results. To
set the path losses value, use: Menu  Configuration  DUT  More1/5  PathLoss.
This step is repeating for specified number of packets (see the “Number of packets”
parameter) and for each frequency channel. If the frequency channel is changed and the
hoping mode is the single frequency mode, the tester sets new parameters of the test
mode using LMP_test_control command.
Test Results
Pavfsk is the average RF-output power of the GFSK portion of the packet for given frequency
channel, measured in dBm.
Pminfsk is the minimum RF-output power of the GFSK portion of the packet for given
frequency channel, measured in dBm. The result has only informative character and is not
used to reach a verdict.
Pmaxfsk is the minimum RF-output power of the GFSK portion of the packet for given
frequency channel, measured in dBm. The result has only informative character and is not
used to reach a verdict.
Pavpsk is the average RF-output power of the DPSK portion of the packet for given frequency
channel, measured in dBm.
Pminpsk is the minimum RF-output power of the DPSK portion of the packet for given
frequency channel, measured in dBm. The result has only informative character and is not
used to reach a verdict.
Pmaxpsk is the minimum RF-output power of the DPSK portion of the packet for given
frequency channel, measured in dBm. The result has only informative character and is not
used to reach a verdict.
To reach a verdict the test results are compared with the limit parameters:
“Upper Limit of DPSK and GFSK average power difference in dB”
“Lower Limit of DPSK and GFSK average power difference in dB”
To change the parameters, use the Edit menu of the test case. If the flag “Use Default” is
selected then all of displayed values of parameters are ignored and the values according to RF
Test Specification [1] are assigned automatically.