81150A-002 AGILENT TECHNOLOGIES, 81150A-002 Datasheet - Page 9

• Manufacturer Part Number: 81150A-002
• Description: NOISE GENERATOR, ARB/FREQ/PULSE, 120MHZ
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of 81150A-002

• Signal Generator Type: Pulse
• Bandwidth: 120MHz
• Modulation Type: Amplitude/Frequency/Phase/Pulse
• Supply Voltage Range: 100V To 240V
• External Height: 108mm
• External Width: 439mm
• Lead Free Status / RoHS Status: na

Setting up a measurement using
trigger, strobe, modulation and carrier
Noise generator – repeatable and
stochastic noise
Gaussian curve and distribution
Jitter and noise cause misalignment of edges and levels, resulting in data errors. Noise is
by its nature unpredictable because it can have many different causes, from signal inter-
ference caused by sudden voltage changes, to distortions introduced during transmission.
It is important to be able to simulate noise-based malfunctions, for example, to identify
the additive noise produced by receiving systems—it is cheaper to lower the noise fi gure
than to increase the transmitter power! The Agilent 81150A and the Agilent 81160A pulse
function arbitrary noise generators let you control the quality of the noise, to test different
cases, and according to various specifi cations.
White Gaussian noise is a good approximation to many real-world situations, and creates
mathematically traceable models, with statistical independent values. The Agilent 81150A
and the Agilent 81160A pulse function arbitrary noise generators provide deterministic
white Gaussian noise, with a signal repetition of 20 days or 26 days respectively. You can
decide on any arbitrary distribution, and trigger the noise to start when you need it.
Modulation
Signal
Tr igger Out
Str obe Out
Out
Gaussian distribution
Gaussian distribution
Norm aliz ed
E vents
Gaussian distribution
sigma
9
sigma
Modulated by Sinewave 0.02 MHz
Car r ier Sinewave 0.04 MHz
Phase Deviation 180 deg.
mean value
N=1
Continuous PM
N=2
sigma
sigma
G eneral:
# events=n x sigm a
N
--------------------------
1
2
3
5
6
7
# events BE R
67%
97%
99.7%
10
10
10
6
9
12
voltage
0.33
0.03
0.003
10
10
10
-6
-9
-12