Amplitude Specifications
Characteristic Noise Indication with CISPR Measurement Bands (0 dB attenuation, 50 Ω input termination)
Band A, 9 to 150 kHz (200 Hz BW) Peak Quasi-Peak Average
Preamp off 15 to –15 dBµV 6 to –25 dBµV 3 to –27 dBµV
Preamp on 2 to –28 dBµV –7 to –29 dBµV –9 to –31 dBµV
Band B, 150 kHz to 30 MHz (9 kHz BW)
Preamp off –3 dBµV –11 dBµV –18 dBµV
Preamp on –8 dBµV –15 dBµV –21 dBµV
Band C, 30 MHz to 1 GHz (120 kHz BW)
Preamp off 9 dBµV 2 dBµV –5 dBµV
Preamp on 4 dBµV –2 dBµV –10 dBµV
System Amplitude Accuracy Band 1 Band 2 Band 3*
9 kHz to 50 MHz 20 MHz to 2.9 GHz 1 to 6.5 GHz
Specification ± 2 dB ± 2 dB
Characteristic ±1 dB ±1 dB ± 3 dB
Linear to Log Scale Switching Uncertainty
85422E/85462A ± 0.25 dB at reference level
Display Scale Fidelity
85422E/85462A
Log maximum cumulative (0 to –66 dB from reference level, 0 to –64 dB for Band 3 only)
3 kHz to 3 MHz IF BW ±(0.3 dB + 0.01 x dB from reference level)
≤ 1 kHz IF BW ±(0.4 dB + 0.01 x dB from reference level)
Log incremental accuracy ±0.4 dB/4 dB
(0 to –56 dB from reference level; 0 to –54 dB for Band 3 only )
Linear scale ±3% of reference level
Gain Compression (Specification is derived from measured distortion with a total power at the input mixer of –10 dBm.
If the IF BW ≤300 Hz, this applies only if signal separation ≥ 4 kHz and the signal amplitude is ≤ reference level + 10 dB.)
Band 1 Band 2 Band 3*
9 kHz to 50 MHz 20 MHz to 2.9 GHz 1 to 6.5 GHz
200 kHz ≤f
0
<10 MHz < 0.75 dB < 0.75 dB < 0.75 dB
f
0
≥ 10 MHz < 0.5 dB < 0.5 dB < 0.5 dB
Characteristic 1 dB compression point
8542E/8546A
( f
0
≥10 MHz)
Preamp off 89 dBµV 89 dBµV 102 dBµV
Preamp on 77 dBµV 77 dBµV 77 dBµV
(9 kHz <f
0
<10 MHz)
Preamp off 85 dBµV
Preamp on 72 dBµV
85422E/85462A
( f
0
>10 MHz) (No bands)
Preamp off 102 dBµV
Preamp on 75 dBµV
(9 kHz ≤f
0
≤10 MHz)
Preamp off 95 dBµV
Preamp on 68 dBµV
Third Order Intercept Point Band 1 Band 2 Band 3* Bypass
f0> 200 kHz, signal separation >50 kHz 9 kHz to 20 MHz to 1 to 9 kHz to
8542E/8546A 50 MHz 2.9 GHz 6.5 GHz 2.9 GHz
Preamp off 97 dBµV 97 dBµV 112 dBµV 112 dBµV
Preamp on 85 dBµV 85 dBµV 85 dBµV 85 dBµV
85422E/85462A (No Bands)
Preamp off 112 dBµV
Preamp on 85 dBµV
* For 8546A EMI receiver only