Table of Contents
Advertisement
Format
Setting the Sweep
Format
Setting the Burst
Count
Format
Internal and External
Triggered Bursts
Appendix C
The offset is a two-byte parameter whose bits are defined in Table C-2.
The offset value
8
A
*2
+A
1
2
For example, to add a 1V dc offset to a 2 Vp signal (into 50
Offset = (1 / .0025) + 2048
= 09
= 9
byte1
The AFG can sweep (linearly) from 0.01 Hz to 15 MHz. The fastest the
AFG can sweep is 187 S per frequency point with amplitude correction
Rate
disabled, or 250 S per point with amplitude correction enabled. Up to 25.5
mS additional delay per frequency point is possible in 100 S increments
(tic count).
The sweep rate is a six-byte parameter (Table C-2). The first four bytes
contain the frequency increment. The fifth byte (tic count) controls how
often the increment occurs. An increment occurs every 187 or 250 S plus
(tic count - 1) delays of 100 S. The sixth byte is always 0 for a linear
sweep.
The burst count specifies the number of waveform cycles to occur when the
"burst" output mode is set. For all other output modes the burst count need
not be set since an infinite number of cycles are output.
The burst count is a two-byte parameter (Table C-2). The count is
converted to the form:
8
A
*2
+ A
1
2
For example, a 1,000 cycle burst is sent as:
1,000 cycles = 03
The AFG burst modes are "internal" and "external". An internal burst of the
specified burst count occurs when an internal trigger is received. An
external burst of the specified burst count occurs when the signal on the
"Aux In" BNC port is low. The burst mode is set with the output mode bytes
covered in the next section. The " Example Programs" section
demonstrates how to set up internal and external triggered bursts.
(Offset)
is converted to the form:
90
16
144
10
byte 2
E8
16
= 3
232
10
byte 1 byte 2
HP E1340A Register-Based Programming 247
:
Advertisement
Table of Contents
