Datasheet

Page 12
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Pseudorandom Binary Sequence (PRBS)
Trueform Series 33500B models 33600A models
Bit rate V
OUT
≤ 10 V
pp
V
OUT
≤ 10 V
pp
1 mbps to 50 Mbps, 1-mbps resolution 1 mbps to 100 Mbps, 1-mbps resolution
V
OUT
≤ 4 V
pp
1 mbps to 200 Mbps, 1-mbps resolution
1
Sequence length 2
m
- 1, m = 7, 9, 11, 15, 20, 23 2
m
- 1, m = 3 to 32
Rise & fall times (nom) V
OUT
≤ 10 V
pp
V
OUT
≤ 4 V
pp
8.4 ns to 1 µs, variable, 100-ps or 3-digit resolution
2.9 ns to 1 ms, independently variable, 100-ps resolution
V
OUT
> 4 V
pp
3.3 ns to 1 ms, independently variable, 100-ps resolution
Arbitrary waveforms
Waveform length 8 Sa to 1 MSa per channel
(16 MSa with opt MEM), in increments of 1 Sa
32 Sa to 4 MSa per channel
(64 MSa with opt MEM), in increments of 1 Sa
Sample rate 20 MHz models: 1 µSa/s to 160 MSa/s,
1-µSa/s resolution
30 MHz models: 1 µSa/s to 250 MSa/s,
1-µSa/s resolution
80 MHz models: 1 µSa/s to 660 MSa/s, 1-µSa/s resolution
8
120 MHz models: 1 µSa/s to 1 GSa/s, 1-µSa/s resolution
8
Voltage resolution 16 bits 14 bits
Waveform characteristics (continued)
Waveform filters
“Normal” (highest bandwidth, ~5% preshoot and overshoot), “Step” (lower bandwidth, ~0% preshoot and overshoot), or “Off”
(transitions from point to point occur as quickly as possible)
Frequency and time
characteristics Filter="Normal" Filter=”Step” Filter=”Off” Filter="Normal" Filter=”Step” Filter=”Off”
Bandwidth (-3dB)(nom) 0.27 x (Sa rate) 0.13 x (Sa rate) 40 MHz 0.27 x (Sa rate) 0.13 x (Sa rate) 100 MHz
Rise & fall time (nom) 0.35/bandwidth
(10 ns min)
0.35/bandwidth
(10 ns min)
10 ns 0.35/bandwidth
(3.5 ns min)
0.35/bandwidth
(3.5 ns min)
3.5 ns
Jitter(rms)(meas)
8
< 5 ps < 5 ps < 40 ps < 2 ps < 1 ps < 10 ps
Arb waveform sequencing
20
Operation Individual arbitrary waveforms (segments) can be combined into user defined lists (sequences) to form longer, more complex
waveforms. Each sequence step specifies whether to repeat the associated segment a certain number of times, to repeat
indefinitely, to repeat until a Trigger event occurs, or to stop and wait for a Trigger event. Additionally, the behavior of the Sync
output (Marker) can be specified in each step. To improve throughput, multiple sequences and segments can be pre-loaded into
volatile memory.
Segment length 8 Sa to 1 MSa per channel (16 MSa with Option MEM), in
increments of 1 Sa
32 Sa to 4 MSa per channel (64 MSa with Option MEM), in
increments of 1 Sa
Sequence length 1 to 512 steps
Segment repeat count 1 to 1x10
10
, or infinite 1 to 1x10
6
, or infinite
Footnotes referenced on page 18