Table 8- 6 – Agilent Technologies N5183A MXG User Manual
Page 322
312
Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide
Creating and Downloading User-Data Files
Pattern RAM (PRAM) Data Downloads (E4438C and E8267D)
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 8-6
PRAM Byte Patterns and Bit Positions
Bit Function
P
a
ttern
R
e
se
t
EV
EN
T 1
Ou
tp
u
t
Re
se
r
v
e
d
(
B
it
= 0
)
Re
se
r
v
e
d
(
B
it
= 1
)
Re
se
r
v
e
d
(
B
it
= 0
)
Bu
r
s
t
Re
se
r
v
e
d
(
B
it
= 0
)
Da
ta
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