Synthesizer VCO Div2 Atten Adjustment

(M9393A)

The goal of this adjustment is to characterize and adjust the VCO Divide By 2 Attenuator for optimal level for signal input to the ESOT in the PLL circuit.

Required Test Equipment

Test Equipment

Recommended Models1

Power meter

N1914A2

Power sensor

E9300A Opt. H25

Adapter, Type-N (f) to 3.5 mm (m)

1250-1750

Frequency reference module

M9300A
  1. Refer to the main required equipment list for alternative models.
  2. N1914A power meters with serial number prior to MY53040007 require Service Note N1914A-07 which fixes a power supply ground loop. The ground loop injects noise into the measurement circuits which can cause unstable measurements at low (-30 dBm) power levels.

Connection and Setup Procedures

Setup for Power Meter Calibration

Setup for Synthesizer Adjustment