37
7
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.
Frequency Range
Limit Relative to 50 MHz
100 kHz to 3.6 GHz
±
2.0 dB
>
3.6 GHz to 8.4 GHz
±
3.0 dB
>
8.4 GHz to 13.6 GHz
±
3.5 dB
>
13.6 GHz to 26.5 GHz
±
4.0 dB
Item
Critical Specifications
(for this test)
Recommended
Keysight Model
Adapter, Type N(m) to 3.5
mm(m)
Frequency: 10 MHz to 18 GHz
VSWR: < 1.1:1
1250-1743
Adapter,
3.5 mm(f) to 3.5 mm(f)
Frequency: 10 MHz to 26.5 GHz
VSWR: < 1.1:1
83059B
Cable, 3.5 mm, 1 meter
Frequency: 10 MHz to 26.5 GHz
VSWR: < 1.4:1
11500E
Cables, BNC 120 cm
Frequency: 10 MHz
10503A
Power Meter
Compatible with power sensor
E4418B
Attenuator, 30 dB Fixed
Frequency: 50 MHz
Accuracy: ±0.05 dB
11708A
Power Sensor
Frequency Range:
50 MHz to 26.5 GHz
Amplitude Range:
–65 dBm to –55 dBm
8485D
Power Splitter
Frequency Range
: 50 MHz to 26.5 GHz
Tracking between ports
: < 0.25 dB
11667B
