INTRODUCTION

Avalon AE3000FL Series Cassette Data Recorders are normally used to record and reproduce wideband analog signals in the 8, 12 or 18 MHz bandwidth range. While an analog representation of the original signal is required for the majority of pre- and post-detection applications, there are nevertheless some tasks where it would be more convenient if the data could be output in a digital format, suitable for direct computer analysis.

To satisfy this need, Avalon now offers an optional Digital Data Output Interface across its full range of AE3000FL Series Wideband Cassette Data Recorders.

PRODUCT DESCRIPTION

The Digital Data Output Interface can be specified on all new Avalon AE31xxFL, AE32xxFL or AE38xxFL Cassette Data Recorders.  This factory-fitted option, which comprises additional data modules plus a rear panel-mounted 37-way Subminiature D female connector, must be specified at the time of ordering. 

The interface permits recorded wideband analog data to output in 8-bit parallel format along with a synchronous data clock.  Even when the Digital Data Output is in use, the recorded analog data is still available at the analog data output interface, permitting parallel processing and/or monitoring.

A fixed output clock rate of 30 MHz is used for all 12 MHz (AE31xxFL) and 8 MHz (AE38xxFL) models.  The clock rate is 45 MHz for 18 MHz (AE32xxFL) variants.

A Low-Voltage Differential Signalling (LVDS) data interface is used as standard while alternative technologies are available to special order.  Care should be exercised when matching cables and terminations due to the high frequencies involved.

The output data stream is continuous (unblocked) at the designated output clock rate.  On multi-channel systems, data is simply byte-interleaved (A, B, C, A, B, C, etc.) with two parallel commutation bits permitting the channels to be demultiplexed.

Download datasheet now?