Bandwidth Limiting Filters –see Figure 36
LF –3 dB <10 Hz,
22 Hz per IEC468 (CCIR),
100 Hz ±5% (3-pole), or
400 Hz ±5% (3-pole).
HF –3 dB 22 kHz per IEC468 (CCIR),
30 kHz ±5% (3-pole),
80 kHz ±5% (3-pole), or
>500 kHz.
Optional Filters up to 7 (see section on Option Filters).
Detection RMS (t = 25 ms or 50 ms),
Average,
QPk per IEC468 (CCIR),
Pk (pseudo-peak), or
S-Pk (0.7071 × Pk reading).
Residual Noise
22 Hz–22 kHz BW £1.0 µV [–117.8 dBu].
80 kHz BW £2.0 µV [–111.8 dBu].
500 kHz BW £6.0 µV [–102.2 dBu].
A-weighted £0.7 µV [–120.9 dBu].
CCIR-QPk £3.5 µV [–106.9 dBu].
Bandpass Amplitude Function
Tuning Range (f
o
) 10 Hz–200 kHz.
Tuning Accuracy ±2%.
Bandpass Response 1/3-octave class II (4-pole),
< –32 dB at 0.5 f
o
and 2.0 f
o
.
Accuracy (at f
o
) ±0.3 dB, 20 Hz–120 kHz.
Residual Noise
10 Hz–5 kHz £0.25 µV [–130 dBu].
5 kHz–20 kHz £0.5 µV [–124 dBu].
20 kHz–200 kHz £1.5 µV [–114 dBu].
Bandreject Amplitude Function
Tuning Range (f
o
) 10 Hz–200 kHz.
Tuning Accuracy ±2%.
Bandreject Response typically –3 dB at 0.73 f
o
& 1.37 f
o
,
–20 dB at f
o
±10%,
–40 dB at f
o
±2.5%.
Accuracy ±0.3 dB, 20 Hz–120 kHz
(excluding 0.5 f
o
–2.0 f
o
).
Chapter 6: Specifications Analog Analyzer
60 Getting Started with Your 2700 Series Instrument
Figure 36. Typical
responses of the standard
band-limiting filters.
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