Specifications

Programming Guide 3-35
ESG Family Signal Generators Remote Data Transfer
Data Transfer Troubleshooting
User File Download Problems
Data Requirement Reminders
To avoid user file data download problems, the following conditions must be met:
1. The user file selected must entirely fill the data field of each timeslot.
2. For Binary memory catalog downloads, the user file must be a multiple of 8 bits, so that
it can be represented in ASCII characters.
3. Available PRAM must be large enough to support both the data field bits and the
framing bits.
Requirement for Continuous User File Data Transmission
“Full Data Field” Requirements If a user file does not completely fill a single timeslot,
the firmware does not load any data into that timeslot. For example, if a timeslot’s data
field should contain 114 bits, and only 100 bits are provided in the user file, no data is
loaded into the timeslot data field, and no data is transmitted at the RF output.
To solve this problem, add bits to the user file until the it completely fills the data field of
the active protocol.
“Integer Number of Timeslots” Requirement for Multiple-Timeslots If a user file
fills the data fields of more than one timeslot in a continuously repeating framed
transmission, the user file is restarted after the last timeslot containing completely filled
data fields. For example, if the user file contains enough data to fill the data fields of 3.5
timeslots, firmware loads 3 timeslots with data and restart the user file after the third
timeslot. The last 0.5 timeslot worth of data is never modulated.
Table 3-4 User FIR File Download Trouble - Symptoms and Causes
Symptom Possible Cause
No data modulated
Not enough data to fill a single timeslot.
If a user file does not completely fill a single timeslot, the
firmware will not load any data into the timeslot. For example, if
a timeslot’s data field should contain 114 bits, and only 100 bits
are provided in the user file, no data will be loaded into the data
field of the timeslot. Therefore, no will be detected at the RF
output.
At RF output,
some data modulated,
some data missing
Data does not completely fill an integer number of timeslots.
If a user file fills the data fields of more than one timeslot in a
continuously repeating framed transmission, the user file will be
restarted after the last timeslot containing completely filled data
fields. For example, if the user file contains enough data to fill
the data fields of 3.5 timeslots, firmware will load 3 timeslots
with data and restart the user file after the third timeslot. The
last 0.5 timeslot worth of data will never be modulated.