The 1635AP interfaces data from up to eight independent 1632AP Dual Stream PCM Decom cards, IRIG time, Ethernet, Acroamatics approved PCI bus resident 3rd party data input cards, HOTLink® fibre port, and optional Model 482P DAC & Discrete Output mezzanine card. Each datum is distributed as two 32-bit words. The first word is the identifier – containing time, status, and an ID tag, and the second word is the data. Up to 131,072 unique ID tags are supported.
The 1635AP uses the ID tag value accompanying each datum to address a vector table in onboard memory that defines the processing, routing, and post-processing destination of each input measurement parameter.
Provides an interface to such devices as digital-to-analog outputs, digital discrete outputs, a local feedback to the Input Bus, serial HOTLink® output, and PCIe bus host DMA channels.
Provides controls for running the 1635AP as well as outputting and receiving data from the Device Bus. PCI bus host DMA channels provide a data path to and from host memory and devices.
The 1635AP utilizes a dedicated Analog Devices SHARC® DSP processing engine operating at a 400 MHz clock rate to perform simultaneous multiplier and ALU operations in a single clock. The DSP is user-programmable with ADI software, which includes a “user defined” C program compiler capability.
Six 16-bit input types are supported: 2’s Complement, 1’s Complement, sign magnitude, offset binary, unsigned magnitude, and binary coded decimal. Three 32-bit types are supported: signed integers, IEEE, & MIL-STD floating point.
Five 16-bit output types are supported: 2’s Complement, 1’s Complement, sign magnitude, offset binary and unsigned magnitude. Four 32-bit types are supported: signed & unsigned integers, IEEE & MIL-STD floating point. Concatenated 64-Bit double precision processing is supported.
A library of 400 telemetry algorithms is provided, plus sequential algorithm chaining and user-defined expression processing. Algorithms include integer-to-floating point and floating point-to-integer conversion, limit and bit testing, data packing, linear data scaling, 7th order conversion, table lookup conversion, ”if / then / else“ derived parameter calculation, and customized and IRIG recording and network data output data formatting.
Algorithm execution times range from one hundred nano-seconds to a few microseconds, with a maximum throughput rate in excess of 5 MSamples/sec, based on industry accepted algorithm and EU conversion project benchmark standards. Dual 1635AP rates to 10 MS/sec.
Operating as a streaming data reconstructor or data simulator, the 1635AP accepts digital data from select recorded files, reconstructs the original data stream, and outputs the “playback” PCM data stream at a continuous user specified streaming data rate and PCM output code (NRZL type).
Accepts data from the PCI bus via DMA or selected data from any Model 1632AP Dual Decom via low latency I-Bus interface and performs “real-time” serialization and output at operator defined bit rate and frame format. This capability supports low latency PCM retransmission, recording, or local processing of select merged PCM input stream(s) or select subsets of input data stream(s) data at a precisely controlled streaming rate PCM formatted NRZ-L encoded output. Latency of serialized data stream processing and output is relative to source input stream rates and select data sample, rates and conversions (EU processing to create derived output word content) requirements.
Standard PCIe X1 format, half length
30 Linear FPM
+3.3VDC at < 1.0 Amp + 12 VDC at 0.10 Amps
4.20” (10.67cm) H x 6.9” (17.53cm) W x .55” (1.4cm) D
Operating: 0º to +40º C, Non-Operating: -40º to +86º C
Up to 90% non-condensing
Operating: 6G, Non-Operating: 50G
Operating: 0.5G, 5 to 2000Hz, Non-Operating: 1.2G, 5 to 500Hz