Scale Fidelity; Test Limits; Test Description - Agilent Technologies PSA Series Manual

ESA Functional Tests

Scale Fidelity

Scale Fidelity

Test Limits

dB from Reference Level
–4
–16
–28
–40
–52
–64

Test Description

A 50 MHz CW signal is applied from a synthesized sweeper to the input of the analyzer.
The source is adjusted for a response at the reference level. The synthesized sweeper
amplitude is adjusted to achieve a nominal amplitude below the reference level. The
analyzer's amplitude marker is compared to the actual source change to determine the
scale fidelity error. Most of the error is the source's output attenuator inaccuracy from the
synthesized sweeper.
Item
Signal Sources
Synthesized Sweeper Output Level Accuracy
0 to –15 dBm: ±1.0 dB
–16 dBm to –63 dBm: ±1.4 dB
≤ –64 dBm: ≥2.0 dB
Adapters
Type-N (m), to
BNC (f)
Type-N (m), to
APC 3.5 (f)
Cables
Type-N, 152-cm
(60-in)
BNC, 122-cm (48-in)
Additional Equipment for 75-Ohm Input
Pad, minimum loss
180
Minimum (dB
)
–1.0 1.0
–1.4 1.4
–1.4 1.4
–1.4 1.4
–1.4 1.4
–2.0 2.0
Critical Specifications
(for this test)
Maximum (dB
)
Recommended
Agilent Model
8340A/B or 836XX
Series
1250-1476
1250-1475
11500D
10503A
11852B
Chapter 4