Agilent Technologies N5183A MXG User Manual

Page 319

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Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide

309

Creating and Downloading User-Data Files

Pattern RAM (PRAM) Data Downloads (E4438C and E8267D)

Pattern RAM (PRAM) Data Downloads (E4438C and E8267D)

NOTE

This section applies only to the E4438C with Option 001, 002, 601, or 602, and the E8267D
with Option 601 or 602.

If you encounter problems with this section, refer to

“Data Transfer Troubleshooting

(N5182A, E4438C and E8267D Only)” on page 340

.

To verify the SCPI parser’s responsiveness when remotely using the :MEM:DATA SCPI
command to upload files, the file’s upload should be verified using the *STB? command.
Refer to the SCPI Command Reference.

This section contains information to help you transfer user- generated PRAM data from a system
controller to the signal generator’s PRAM. It explains how to download data directly into PRAM and
modulate the carrier signal with the data.

The control bits included in the PRAM file download, control the following signal functions:

bursting

timing signal at the EVENT 1 rear panel connector

data pattern reset

PRAM data downloads apply to only real- time Custom and TDMA modulation formats. In the TDMA
formats, PRAM files are available only while using the unframed data selection. The following table
on

page 310

shows which signal generator models support these formats.

20 ns

32QAM (5 bits per symbol)

100 ns

10 Msps

10.000001 Msps

bit rate = bits per symbol x symbol rate

NOTE: The pulse widths values are only for example purposes. The actual width may vary from the above values.

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