Frequency Response (Flatness), Preamp On - Keysight N8973B Service Manual

Functional Tests

Frequency Response (Flatness), Preamp On

Frequency Response (Flatness), Preamp On
Test Limits
The frequency response test, with preamplifier on, measures the signal
analyzer's amplitude error as a function of the tuned frequency. Measurements
are made ranging from 50 MHz to the maximum frequency range of the
preamp. The signal source amplitude is measured with a power meter to
eliminate error due to source flatness. The measured value is normalized to
50 MHz.
Item
Adapter, Type N(m) to 3.5 mm (m)
Adapter,
3.5 mm(f) to 3.5 mm (f)
a
Cable, 3.5 mm, 1 meter
b
Cable, 2.4 mm, 1 meter
Cables, BNC 120 cm
Power Meter
Attenuator, 30 dB Fixed
Keysight NFA Series Noise Figure Analyzers Service Guide
Frequency Range
100 kHz to 3.6 GHz
> 3.6 GHz to 8.4 GHz
> 8.4 GHz to 13.6 GHz
> 13.6 GHz to 26.5 GHz
> 26.5 GHz to 34.5 GHz
> 34.5 GHz to 44 GHz
Critical Specifications
(for this test)
Frequency: 10 MHz to 18 GHz
VSWR: < 1.1:1
Frequency: 10 MHz to 26.5 GHz
VSWR: < 1.1:1
Frequency: 10 MHz to 26.5 GHz
VSWR: < 1.4:1
Frequency: 10 MHz to 44 GHz
VSWR: < 1.55:1
Frequency: 10 MHz
Compatible with power sensor
Frequency: 50 MHz
Accuracy: ±0.05 dB
Limit Relative to 50 MHz
±2.0 dB
±3.0 dB
±3.5 dB
±4.0 dB
±4.5 dB
±6.0 dB
Recommended
Keysight Model
1250-1743
83059B
11500E
8120-6164
10503A
E4418B
11708A
509