Lecroy AP034-OM-E-08 User Manual
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NOMINAL CHARACTERISTICS
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The following specifications are valid for model AP034 probes
after the probe has reached operating temperature. This takes
20 minutes with power applied, in an environment with stable
ambient temperature. The probe must be operating within the
environmental conditions listed in the General Characteristics
section, and must have been calibrated within the past 12
months in an ambient temperature of 23 ±5
Nominal characteristics describe parameters and attributes that
are guaranteed by design, but do not have associated
tolerances.
Input Configuration: True Differential (+ and –
Inputs); with shield Ground
connector.
1
Effective Gain
:X1, ÷101, ÷20
°
C.
1
Input coupling: DC. AC Coupling obtained by
installing AC Coupling Adapter.
Differential Mode Range: ±400 mV (÷1 Attenuation)
±4 V (÷10 Attenuation
±8 V (÷100 Attenuation
Common Mode Range: ±16 V (÷1 Attenuation)
±42 V (÷10 Attenuation
±42 V (÷20 Attenuation
1
)
1
)
1
)
1
)
Maximum Input Voltage: ±42 V either input from ground
AP034-OM-E Rev D ISSUED: January 2000 ²
WARRANTED ELECTRICAL CHARACTERISTICS
Warranted characteristics are parameters with guaranteed
performance. Unless otherwise noted, tests are provided in the
Performance Verification Procedure for all warranted
specifications.
LF Gain Accuracy: 2% into 50.0 Ω load
Common Mode Rejection Ratio
1
Notes:
÷10 and ÷20 obtained with external plug-on attenuators
2
Output impedance is 50 Ω, intended to drive 50 Ω. Add
uncertainty of termination impedance to accuracy.
3
LeCroy measures CMRR with a fixture that connects
the probe tip ground to the signal source ground. This
method is necessary to obtain a reproducible CMRR
measurement.
Often, users leave the probe tip ungrounded when
measuring high frequency signals. Not grounding the
probe tip can actually improve CMRR by allowing
some of the common mode signal to be impressed
across the entire length of the probe cable instead of
from probe tip to probe ground. The CMRR
improvement obtained without grounding the probe tip
depends on proximity to probe cable ground; therefore,
it is nonreproducible.
LeCroy has chosen to use a reproducible method of
measurement, rather than obtain a more optimistic
measurement.
$3$FWLYH3UREH
measured at 1 kHz
3
: (probe head grounded, DC
coupled without attenuator)
70 Hz ≥ 80 dB
1 MHz ≥ 40 dB
100 MHz ≥ 25 dB
2
,
² ISSUED: January 2000 AP034-OM-E Rev D
TYPICAL ELECTRICAL CHARACTERISTICS
Typical characteristics are parameters with no guaranteed
performance. T ests for typical character istics are not provided in
the Performance Verification Procedure.
Bandwidth, probe only
Output Zero: < 3 mV within 30 minutes
Residual Autobalance
Differential Offset
Input Resistance
(each side to ground): 1 M
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(–3 dB): DC to 1 GHz
of autobalance
Offset: ≤ 100 µV referred to input with X1
effective gain
Range: ±1.6 V (÷1 Attenuation)
±16 V (÷10 Attenuation)
±42 V (÷20 Attenuation)
CMRR: See Figure 13.
Input Capacitance
(between inputs): < 0.85 pF (See Figure 1.)
Input Capacitance
(each side to ground): < 1.5 pF (See Figure 1.)
Noise
(referred to input,
10 to 1000 MHz): 35 nV/√Hz (÷1 Attenuation)
350 nV/√Hz (÷10 Attenuation)
700 nV/√Hz (÷20 Attenuation)
Output Impedance: 50 QRPLQDO,QWHQGHGWRGULYH
Harmonic Distortion
rd
order distortion: –60 dB below fundamental (200 mV
3
rd
order intercept: +20 dBm (at 100 MHz at output)
3
output, at 100 MHz)
p-p
AC Coupling LF Cutoff
(–3 dB): 16 Hz (using plug-on AC coupler)
AP034-OM-E Rev D ISSUED: January 2000 ²
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