Interface Kit for EV9900A

EV9902

©

CML Microsystems Plc

19

2009

UM9902/3

Before starting a measurement check the software settings to ensure that:

•

The Tx tab is set to transmit and the Rx tab is set to receive.

•

Tx/Rx tabs have the same measurement type, i.e. unit based or continuous

measurement.

•

Bit sync., frame sync., and control data bytes are the same on Tx/Rx tabs.

•

Tx/Rx tabs have the same formatting, i.e. raw data or Mobitex mode.

•

The selected bit count is the same for Tx/Rx tabs if carrying out a unit based

measurement in raw data mode.

•

The selected block count is the same for Tx/Rx tabs if carrying out a unit based

measurement in Mobitex mode.

•

The selected frame size is the same for Tx/Rx tabs if carrying out a measurement in

Mobitex mode.

•

The selected bit rate setting is the same on Tx/Rx tabs and also that the setting is the

same as the bit rate setting programmed into the CMX990.

Once all settings have been made and checked for transmit and receive tabs then the procedure

for starting the measurement is as follows:

•

Press the Start button on the receive tab. The Measurement status box will display the

text ‘Searching for frame sync’.

•

Press the Start button on the transmit tab. The Measurement status box should display

the text ‘Measurement running’. The bit/block count will be updated continuously with the

number of bits/blocks transmitted. If the receive board detects the transmitted frame sync.

then the Measurement status box on the receive tab will change to ‘Measurement

running’ and the bit/block count will be continuously updated with the number of

bits/blocks received. If receive errors occur then the error count and error percentage will

be updated accordingly.

6.2.

Firmware Description

The hyBoard-XS included with this kit is supplied preloaded with the latest version of the EF9900

firmware. The firmware acts as an interface between the ES9902 application and the EV9900A

evaluation board. It receives commands from the ES9902 application, via the USB port, and

performs the appropriate actions. All the modem transfer and bit error rate measurement

operations are performed by the firmware in real-time and the results reported back to the

ES9902 application.

6.2.1.

Updating the Firmware

The EF9902 firmware loaded onto the hyBoard-XS can be updated via the USB port using the

supplied ESFlash application. To re-program the hyBoard-XS flash:

1.

Run the ESFlashxx.exe (where xx is the version number) executable

2.

Select EV9902 as the target type

3.

Select the required ‘.bin’ file by clicking on the ‘Load File’ button

4.

Click the ‘Program’ button

5.

When prompted, set the position of the hyBoard-XS jumper, ST13, to 5-6 and press the

reset button, S1

6.

Wait for the hyBoard-XS LED, LED6, to flicker and then remain on

7.

When prompted, set the position of the hyBoard-XS jumper, ST13, to 1-2

Once the hyBoard-XS flash has been reprogrammed, it can be run by pressing the reset button,

S1, or by cycling the power supply to the hyBoard-XS.