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Programming Guide 3-33
ESG Family Signal Generators Remote Data Transfer
Data Transfer Troubleshooting
Data Transfer Troubleshooting
This section is divided by data transfer method:
Direct PRAM Download Problems” on page 3-33
User File Download Problems” on page 3-35
User FIR Filter Coefficient File Download Problems on page 3-38
ARB Waveform Data Download Problems” on page 3-38
Each section contains the following troubleshooting information:
a list of symptoms and possible causes of typical problems encountered while
downloading data to the signal generator
reminders regarding special considerations, file requirements, and data limitations
tips on creating data, transferring data, data application and memory usage
Direct PRAM Download Problems
Data Requirement Reminders
To avoid direct-download-to-PRAM problems, the following conditions must be met:
1. The data must be in binary form.
2. For every bit of modulation data (bit 0), you must provide seven bits of control
information (bits 1-7).
Table 3-3 Direct-to-PRAM Download Trouble - Symptoms and Causes
Symptom Possible Cause
The transmitted pattern is
interspersed with random,
unwanted data.
Pattern reset bit not set.
Insure that the pattern reset bit (bit 7, value 128) is set on the
last byte of your downloaded data.
ERROR -223, Too much data
PRAM download exceeds the size of PRAM memory.
Either use a smaller pattern or get more memory by ordering the
appropriate hardware option.
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