EV9902A Datasheet, PDF (18/23 Pages) CML Microcircuits – Measures Bit Error Rate

Interface Kit for EV9900A
EV9902
Block count drop down box – Select the number of blocks (1 block = 18 bytes) to transmit or
receive. Selectable values are 1000, 10000 and 1000000 blocks. Default selection is 1000 blocks.
The selected value only applies when unit measurement and Mobitex mode are selected.
Frame size drop down box – Select the number of blocks per frame. Selectable values are 1, 5,
10 and 25. Default selection is 25 blocks per frame. The selected value only applies when
Mobitex mode is selected.
bps drop down box – Select the programmed bit rate. Selectable values are 4000, 4800, 8000,
9600 and 16000bps. Default selection is 9600bps. The setting of this control does not write to the
Clock Control register on the CMX990. The value selected with this control is used by the
firmware to calculate timings for completing various tasks. Therefore, the setting of this control
should be identical to the current bit rate setting programmed into the CMX990.
Bits transmitted box – This box is continually updated with the number of bits transmitted, whilst
a measurement is ongoing. The box is only updated when transmitting in raw data mode. In other
modes it will display zero. This box is read only.
Bits received box – This box is continually updated with the number of bits received, whilst a
measurement is ongoing. The box is only updated when receiving in raw data mode. In other
modes it will display zero. This box is read only.
Bits received in error box – This box is continually updated with the number of bits received in
error, whilst a measurement is ongoing. The box is only updated when receiving in raw data mode
and when errors occur. In other modes, or if no errors occur then the box will display zero. This
box is read only.
Bits received in error (%) box – This box is continually updated with the number of bits received
in error, expressed as a percentage of the total number of bits received, whilst a measurement is
ongoing. The box is only updated when receiving in raw data mode and when errors occur. In
other modes, or if no errors occur then the box will display zero. This box is read only.
Blocks transmitted box – This box is continually updated with the number of blocks transmitted,
whilst a measurement is ongoing. The box is only updated when transmitting in Mobitex mode. In
other modes it will display zero. This box is read only.
Blocks received box – This box is continually updated with the number of blocks received, whilst
a measurement is ongoing. The box is only updated when receiving in Mobitex mode. In other
modes it will display zero. This box is read only.
Blocks received in error box – This box is continually updated with the number of blocks
received in error, whilst a measurement is ongoing. The box is only updated when receiving in
Mobitex mode and when errors occur. In other modes, or if no errors occur then the box will
display zero. This box is read only.
Blocks received in error (%) box – This box is continually updated with the number of blocks
received in error, expressed as a percentage of the total number of blocks received, whilst a
measurement is ongoing. The box is updated when receiving in Mobitex mode and when errors
occur. In other modes, or if no errors occur then the box will display zero. This box is read only.
Measurement status box – This box will indicate when a measurement is running or stopped or
when the receiving modem is searching for frame sync. This box is read only.
Start button – Starts measurement. This button is disabled once it has been clicked. It will only
be re-enabled after the Stop button has been pressed or a unit based measurement has
completed.
Stop Button - Stops an ongoing measurement and re-enables the Start button.
© 2009 CML Microsystems Plc
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UM9902/3