Tescom TC-3000C - Page 239

Appendix B. RF Test Cases of the TC-3000C
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Hopping mode: 1 (Hopping is off)
BT channels: 0-39-78
Packet type: longest
RX Power: -70 dBm
Number of samples: 200,000 bytes
Additional test conditions
Test mode is Loop back, hopping is off, whitening is disabled, the payload’s bit pattern is
PRBS9.
Test Procedure
1. The tester calculates and sets the TX power to satisfy requirement of expected power at
the input of the DUT’s receiver. The TX power is calculated as P
TX
= P
RX DUT
+ PL, where
P
TX
is the TX power of the tester, P
RX DUT
is the expected power at the input of the DUT’s
receiver and PL is the path losses. To set the path losses value use Menu 
Configuration  DUT  More1/5  PathLoss.
2. If the DUT is not connected then the tester creates connection via access procedures
(paging and inquiry if necessary).
3. The tester will activate test mode (if the test mode is not activated yet) and will set all
necessary parameters of the test mode.
4. 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).
5. The DUT is set to receive at the given channel frequency. The tester continuously sends
packets to the DUT at the given channel frequency.
6. Tester enters dirty transmitter mode [1] and starts the bit error rate measurement. Tester
stops the measurement if the number of returned and processed payload bytes exceeds
required number (see the Number of samples parameter). Tester records actual number of
processed samples and number of bitts with error.
7. Tester stops dirty transmitter mode.
8. Steps 5 to 7 are repeated for each channel frequency (see the BT channels parameter).
Test Results
bytes is actual number of returned payload which were processed during BER measurement.
error_bits is the number of bits with error.
BER it the bit error rate in percents.
To reach a verdict the test results are compared with the limit parameters:
“Upper Limit of the BER”
To change the parameter, 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 value, according to RF
Test Specification, are assigned automatically.
Requirement to Initial Condition of a DUT
If the DUT can be controlled through HCI, the DUT must be connected to an appropriate HCI
port of the tester and correct value of the HCI Port parameter must be specified in DUT