Last updated: January 16, 2009
Used for Data
.
Cell Power
or decrease
AWGN Power
so that the UE can detect the downlink transport blocks and send acknowledgments or retransmission requests to the test set). You must also disconnect and then reconnect the call, then re-initiate the measurement. To prevent the measurement from hanging again in the future, enable the
Measurement Timeout
. Note, however, that before re-initiating the measurement you will still need to increase the downlink signal-to-noise ratio, then disconnect and reconnect the call.
Trigger Arm
is set to
Single
(see
Trigger Arm (Single or Continuous) Description
), you must press the
START SINGLE
key to initiate the measurement.
Measurement Timeout
(2) is returned:
Questionable MS-to-Cell Data (28)
is returned if a missing block is detected (see
Uplink Missing Blocks
).The block error ratio and loopback bit error ratio measurements can not be run concurrently. If a BLER measurement is initiated while a BER measurement is active, the BER measurement is aborted and the measurement is closed (and vice versa).
Used for Data
. This disables the uplink CRC. Thus, the block error ratio measurement does not report any uplink
CRC Errors
, whereas the loopback BER measurement does. Thus, it is very important that you ensure the uplink is robust (error free).