EV9902A Datasheet, PDF (5/23 Pages) CML Microcircuits – Measures Bit Error Rate

Interface Kit for EV9900A
2. Preliminary Information
EV9902
2.1. Laboratory Equipment
The following laboratory equipment is needed to use this evaluation kit:
• A 5.0V D.C. power supply rated at 1A
• A USB cable, to connect the PC to the EV9902
• A PC running Microsoft Windows 2000/XP with a spare USB port
• A EV9900A Evaluation Kit (which also requires):
o A RF attenuator
o RF test equipment, for example a Spectrum Analyser and RF signal generator
o A 7.2V D.C. power supply rated at 1A
o A 3.6V D.C. power supply rated at 2A
2.2. Handling Precautions
Like most evaluation kits, this product is designed for use in office and laboratory environments.
The following practices will help ensure its proper operation.
2.2.1.
Static Protection
This product uses low power CMOS circuits that can be damaged by electrostatic discharge.
Partially damaged circuits can function erroneously, leading to misleading results. Observe ESD
precautions at all times when handling this product.
2.2.2. Contents - Unpacking
Please ensure that you have received all of the items on the separate information sheet (EK9902)
and notify CML within 7 working days if the delivery is incomplete.
2.3. Approvals
This product is not approved to any EMC or other regulatory standard. Users are advised
to observe local statutory requirements which may apply to this product and the radio
frequency signals which may emanate from it.
2.4. Important Information
• Following power up, or between operations, the CMX990 should be reset using the Reset check-
box in the Power and Analogue Registers tab.
• DAC0 provides the control voltage for the PA. At power up, or following a reset of the CMX990,
DAC0 is tri-state, which gives near full-power from the PA. Write DAC0 with $0000 in the ADC
and DAC tab, to switch off the PA.
• The EV9900A is fitted with an IF at 45MHz. Set the TxIF to 45MHz in the PLL Registers tab
before using transmit functions.
• Operations from the Modem Transfers and BER Measurement tabs use a fixed, low power, PA
setting. This cannot be altered. Other settings may be necessarily altered automatically to permit
the data transfer. It is advised that the CMX990 is reset after using these operations.
© 2009 CML Microsystems Plc
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