ASCII dump 174-216 MHz spectrum (RBW<30 kHz) both channels, w/
¥
inputs terminated, and
¥ dipole assembly (not shorted) inside cavity of absorber.
Verify gain 184-198 MHz.
Verify operation of power PC board logic. Measure resistance for VCC lines.
12h burn-in for 2-band and 12h for simulated P-band load.
ASCII dump S11, S21, S12, S22 Smith chart for RX pre and post packaging in Rose box.
Tabulate phase shift of channel 1 vs 2 from 184 to 198 MHz.
Tabulate relative amplitude of channel 1 vs 2 from 184-198 MHz.
Tabulate diode power in each channel (Ç1K uncertainty).
Noise-meter measurements pre installation of Q-hybrid, 180-200+ MHz.
Ambient load/cold/diode on/off test to measure T_RX after packaging into Rose box.
(Obtain measurements at 185, 193, 195, 197 MHz frequency using Tin Lee filters.)
0-18+ GHz sweep both channels with different input conditions (record sensitivity dBm/Hz & RBW):
1) 2 dipole channels w/ cavity of absorber
2) both channels terminated
3) channel 1 terminated/channel 2 connected to the dipole
4) channel 1 shorted/channel 2 connected to the dipole
5) channel 1 open/channel 2 connected to the dipole
6-8) inverse of 3-5 regarding source for channels 1 & 2.
Power meter measurement at inputs for diode on/off. Record limits.
300-345 MHz noise at output for diode on/off with inputs terminated, open, shorted, and connected to the dipole, if possible. Record limits.
Compile amplifier linear ranges for each stage, insertion losses for components, and noise figures. Create table/spreadsheet of signal flow from end to end, comparing power levels for cold sky (200K) to amplifier operating ranges. Confirm measured end-to-end results.