Scale Fidelity; Test Limits (Pass/Fail Criteria) - Agilent Technologies X Series Manual

8

Scale Fidelity

Test Limits
The scale fidelity error will be ≤ ±1.0 dB with ≤ −10 dBm at the mixer.
This test checks the scale fidelity of the instrument by maintaining a constant reference level and
measuring signals of different amplitudes over most of the display range. This test sets the input
attenuator to 10 dB and the Reference Level to 0 dBm. The external attenuator is set to 0 dB, and the
amplitude of the source is adjusted to set the displayed signal at the reference level.
The instrument's internal marker is used to measure the reference amplitude. The Marker Delta function
is activated and the RF input is reduced using the external precision step attenuator. Signal input levels
from 0 dBm to −50 dBm are measured.
Item
Adapter, Type-N(m), to Frequency: 10 MHz to 18 GHz
3.5 mm(f)
VSWR: < 1.1:1
Adapter, 3.5 mm(f) to Frequency: 10 MHz to 26.5 GHz
3.5 mm(f)
VSWR: < 1.1:1
Attenuator, 10 dB Step Range: 0-50 dB
Frequency: 50 MHz
Accuracy: ±0.25 dB
Attenuator, 10 dB fixed Frequency: 50 MHz
(2 required)
VSWR: < 1.2:1
Cable, 3.5 mm, 1 meter Frequency: 10 MHz to 26.5 GHz
(2 required)
VSWR: < 1.4:1
Cable, BNC 120 cm Frequency: 10 MHz
Output Level Accuracy: 0 to –15 dBm: ±1.0 dB
Synthesized Sweeper
Critical Specifications
(for this test)
Recommended
Agilent Model
1250-1745
83059B
8495A
8493C, option 010
11500E
10503A
PSG
39