348 Keysight CXG, EXG, and MXG X-Series Signal Generators Programming Guide
Creating and Downloading User–Data Files
Pattern RAM (PRAM) Data Downloads
Viewing the PRAM Waveform
After the waveform data is written to PRAM, the data pattern can be viewed
using an oscilloscope. There is approximately a 12–symbol delay between a
state change in the burst bit and the corresponding effect at the RF out. This
delay varies with symbol rate and filter settings, and requires compensation to
advance the burst bit in the downloaded PRAM file.
Table 6-10
PRAM Byte Patterns and Bit Positions
Bit Function
Pa
tte
rn Re
se
t
EV
ENT 1 Output
Reserv
ed (Bit = 0)
Reserv
ed (Bit = 1)
Reserv
ed (Bit = 0)
Burst
Reserv
ed (Bit = 0)
Data
Bit
Pattern
Decimal
Value
Bit Position
7
6
5
4
3
2 1
0
---
Bit Pattern
1
1
0
1
0
1
0
1
213
1
1
0
1
0
1
0
0
212
1
1
0
1
0
0
0
1
209
1
1
0
1
0
0
0
0
208
1
0
0
1
0
1
0
1
149
1
0
0
1
0
0
0
1
145
1
0
0
1
0
0
0
0
144
0
1
0
1
0
1
0
1
85
0
1
0
1
0
1
0
0
84
0
1
0
1
0
0
0
1
81
0
1
0
1
0
0
0
0
80
0
0
0
1
0
1
0
1
21
0
0
0
1
0
1
0
0
20
0
0
0
1
0
0
0
1
17
0
0
0
1
0
0
0
0
16
Summary of Contents for X-Series
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