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RF Power Measurements

Frequency Range: 30 MHz to 1 GHz, 1.7 to 2.0 GHz

Figure 2. Accuracy

Measurement Range RF IN/OUT:

100 MHz <f

<2.0 GHz:

4 mW to 100 W continuous, temperatures <40° C,

75 W continuous, for temperatures <55° C

30 MHz <f

<100 MHz: 4 mW to 1 W continuous

Supplemental Characteristics

Resolution: 3 digits (Example: Resolution of 10 mW for powers

<10 W and >1 W)

FM Measurement

Frequency Range: 5 MHz to 1 GHz (usable to 400 kHz),

and 1.7 to 2.0 GHz

Deviation: 20 Hz to 75 kHz

Sensitivity: 4 µV for 12 dB SINAD, (30 kHz IF BW,

high sensitivity mode, 0.3 to 3 kHz BW)

Typically: < 2 µV (12 dB SINAD, f

>10 MHz)

Accuracy: ±4% of reading plus residual FM and noise contribution

(20 Hz to 25 kHz rates, deviation < 25 kHz, 230 kHz IF BW)

Bandwidth (3 dB): 20 Hz to 70 kHz

THD + Noise: <1% rms, (for deviation >5 kHz and at a rate of

1 kHz in a 0.3 to 3 kHz BW, 230 kHz IF BW)

Input Level Range for Specified Accuracy:

–6 to +50 dBm at RF IN/OUT

–44 to +12 dBm at ANTENNA IN

Residual FM and Noise (0.3 to 3 kHz, rms):

<7 Hz, for f

<1000 MHz

<14 Hz, for 1.7 <f

<2.0 GHz

Supplemental Characteristics

Resolution: 1 Hz, f <10 kHz ; 10 Hz, f >10 kHz

AM Measurement

Frequency Range: 10 MHz to 1 GHz (usable to 400 kHz), 1.7 to 2.0 GHz

Depth: 0 to 95%

Input Level Range (levels in PEP):

–6 to +52 dBm at RF IN/OUT

–44 to +14 dBm at ANTENNA IN

Supplemental Characteristics

Accuracy: ±5% of reading ±1.5 % AM, ( 50 Hz to 10 kHz rates,

modulation <80%)

THD + Noise: <2% rms for modulation <80% AM,

(at 1 kHz rate in a 0.3 to 3 kHz bandwidth)

Residual AM: <0.2% in a 0.3 to 3 kHz bandwidth

Resolution: 0.1%

Spectrum Analyzer Specifications

Frequency Range: 400 kHz to 1 GHz, 1.4 to 2.0 GHz

Frequency Span/Resolution Bandwidth (coupled):

Span Bandwidth

<50 kHz 300 Hz

<200 kHz 1 kHz

<1.5 MHz 3 kHz

<18 MHz 30 kHz

>18 MHz 300 kHz

Span Capability:

Full span capability 1 GHz

Display: Log with 1, 2, and 10 dB per division

Display Range: 80 dB or 8 divisions

Reference Level Range: +50 to –50 dBm

Residual Responses: <–70 dBm (ANT IN port, no input signal,

0 dB attenuation)

Image rejection: >50 dB

Supplemental Characteristics

Non-harmonic Spurious Responses:

>65 dB down (for input signals >50 MHz, <–30 dBm),

>55 dB down (for input signals <50 MHz, <–30 dB)

Log Scale Linearity: ±2 dB, (for input levels <–30 dBm within 6

divisions of reference level

Displayed Average Noise Level: <–114 dBm, for <50 kHz span,

–50 dBm reference level

Level Accuracy (at center frequency and within 1 division of

reference level): ±2.5 dB

Tracking Generator Specifications

Tracking Generator Frequency Range: 400 kHz to 1 GHz,

1.7 to 2.0 GHz

Frequency Offset: Frequency span endpoints ± frequency offset

cannot be <400 kHz or >1 GHz in the 1 GHz band and cannot be

<1.7 GHz or >2.0 GHz in the 2 GHz band

Output Level Range: Same as signal generator, page 4

Sweep Modes: Normal and inverted

2. To achieve the specified accuracy when measuring power at the RF IN/OUT port,

the internal signal generator level must be 60 dB below the measured power or

less than –20 dBm at the Duplex port.

3. Center frequency must be <1.0 GHz or between 1.7 to 2.0 GHz

100%

80%

60%

40%

20%

0º C 10º C 20º C 30º C 40º C 50º C 60º C

32º F 50º C 68º C 86º C 104º C 122º C 140º C

Temperature

Relative Humidity

±(7.5% ±50 µW)

Typically ±5%

1.7 GHz≤f

≤2.0 GHz

±(12% ±50µW)

Typically 10%

≤1000 MHz

±(10% ±50 µW)

Typically ±7%

1 2 3 4 5 6 7 8

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Agilent Technologies 8935 Series Manual do Utilizador Página 5

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