1132A AGILENT TECHNOLOGIES, 1132A Datasheet - Page 24

• Manufacturer Part Number: 1132A
• Description: TEST PROBE, OSCILLOSCOPE
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of 1132A

• Test Probe Type: Oscilloscope
• Test Probe Functions: High Frequency
• Accuracy: ± 3%
• For Use With: Infiniium Series Oscilliscopes
• Lead Free Status / RoHS Status: na

Differential Voltage Probes Overview
Differential probes are active
probes with two inputs, one posi-
tive and one negative, as well as a
separate ground lead. They are
used to look at signals that are
referenced to each other instead
of earth ground and to look at
small signals in the presence of
large dc offsets or other common
mode signals such as noise. The
differential amplifier in the probe
rejects signals that are common
Model
1153A
1130A/31A/32A/34A
1168A/69A
Differential Probe Advantages
View small signals in the presence of dc or
other common mode signals
1153A probes both low- and high-voltage
differential signals with low thermal drift
1168A/69A and 1130A/31A/32A/34A probes both
single-ended and differential signals up to
13 GHz bandwidth
24
Figure 4.1. Agilent 1153A for probing
low-bandwidth differential signals.
Probe Type
Active Differential
Active Diff/SE
Active Diff/SE
to the two inputs, removing the
dc or common mode signals and
leaving the signal of interest. The
common mode rejection ratio
(CMRR) characterizes how effec-
tively the probe rejects signals
common to each input. The CMRR
for differential signals is much
higher than using two passive
probes and subtracting the sig-
nals with a math function.
Applications and Use
Measure low-bandwidth differential signals
Measure both differential and single-ended signals up to 7 GHz
Measure both differential and single-ended signals up to 13 GHz
Limitations
More expensive than general-purpose probes
Less dynamic range than using two passive probes
200 MHz bandwidth
Lower dynamic range and lower maximum input voltage
Figure 4.2. Agilent 1130A InfiniiMax
probe amplifier and E2675 differential
browser probe head, ordered separately.
Differential probes are used with
RF communication ICs, semicon-
ductor characterization (RAM-
BUS, Double Data Rate, DRAM,
AGP), battery-powered communi-
cation and computing equipment
(cellular phone, laptop computer,
etc.), disk drive read-write chan-
nel signals, power supply design
and verification, motor speed
controls, electronic high-power
converters, and other applica-
tions where signals are “floating”
above ground.
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