User`s guide

Agilent X-Series Signal Generators User’s Guide 325
Custom Digital Modulation (Option 431)
Creating and Using Bit Files
Figure 13-9 Data Selection Softkeys
Creating a User File
Accessing the Table Editor
1. Press Preset.
2. Press Mode > Real-Time Custom Modulation > Modulation Setup > Data > User File > Create File.
This opens the Bit File Editor. The Bit File Editor contains three columns: Offset, Binary
Data, and Hex Data, as well as cursor position (Position) and file name (Name) indicators, as
shown in the following figure.
Mode > Real-Time Custom Modulation >
Modulation Setup
For details on each key, use key help as described on page 44.
Press this key to select from a
number of P sequences and
whether to invert them.
Press this key to select data
patterns of 1s and 0s.
Press this key to create, select,
and edit files to use as the bit
pattern.
Press this key to select a Pattern
RAM (PRAM) file.
PRAM files are binary arrays in byte
format. Each byte consists of a data
bit (LSB/bit 0), a burst bit (bit 2), and
an Event 1 output bit (bit 6). The
PRAM internal format consists of 4
bytes for each PRAM byte.
PRAM files are useful for specifying
custom framing structures with fixed
data.