Return Loss Specifications - Keysight 537A Operating Note

Performance Test

Return loss specifications

537A reflection coefficient off-resonance: 0.35 (2.0 SWR, 9.5 dB return loss).
Description
As shown in
analyzer, and a dual directional coupler in a reflectometer test setup. The reflectometer is
calibrated using a short. The 537A coaxial frequency meter under test is connected and the return
measured.
Figure 2
Table 3
Instrument type
Sweep oscillator
Dual directional coupler
Detectors (2 required)
Modulator
Swept amplitude analyzer/
Oscilloscope
Coaxial short
16
Figure 2, two detectors are connected together with a modulator, swept amplitude
Return loss test setup
Equipment
Suggested Keysight model
8620C mainframe
(with appropriate RF plugins)
778D
[a]
779D
GHz or connector type
-
110 MHz to 2 GHz
1.7 to 12.4 GHz
-
-
-
Type-N female
Type -N male APC-7
Keysight 537A Operating Note