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E1437A
ASCII Overview and Commands
parameter
The following table summarizes the output word or byte sequence for each
combination of type, resolution, and port parameters:
COMPLEX
COMPLEX
COMPLEX
COMPLEX
Comments
The maximum rate at which data may be transferred to memory is determined by
the DSP clock rate: Max bytes/s. = 4 * DSP clock rate. In continuous mode the
maximum rate is limited to (4 * DSP clock rate) / 2. However, you may successfully
perform this type of measurement by adding a level of decimation to reduce the
sample rate.
A limitation also applies to 32-bit, complex data transfers. Because this type of
transfer cannot be made at the full sample rate, a level of decimation must be added
in order to reduce the sample rate
5-16
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determines which output port is used to take data from the E1437 module.
value
0
VME. Means the data is to be output using standard VME register reads
LBUS. Means the data is to be output as a byte-serial data stream via the VXI local bus.
1
When using the local bus port the module immediately to the right of the E1437 must be
capable of receiving the local bus byte sequence.
Type
Resolution
Port
VME
REAL
16BIT
VME
16BIT
VME
REAL
32BIT
VME
32BIT
LBUS
REAL
16BIT
LBUS
16BIT
LBUS
REAL
32BIT
LBUS
32BIT
port parameter definition
Sequence
R0[15:0],R1[15:0],...
R0[15:0],Q0[15:0],R1[15:0],Q1[15:0],...
R0[31:16],R0[15:0],R1[31:16],R1[15:0],...
R0[31:16],R0[15:0],Q0[31:16],Q0[15:0],R1[31:16]...
R0[15:8],R0[7:0],R1[15:8],R1[7:0],...
R0[15:8],R0[7:0],Q0[15:8],Q0[7:0],R1[15:8]...
R0[31:24],R0[23:16],R0[15:8],R0[7:0],R1[31:24],...
R0[31:24],R0[23:16],R0[15:8],R0[7:0],Q0[31:24],Q0[23:16],Q0[15
:8],Q0[7:0], R1[31:24],...
DATA:SETUP
command/query
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