Aeroflex IFR 4000, Maintenance Manual, Page: 90 / 211

MAINTENANCE MANUAL
IFR 4000
2-2-3
Page 48
Aug 1/04
STEP DATA RESULT
(8) VSWR (RF I/O and SWR Connectors)
RF I/O CONNECTOR
3. Record levels:
75 MHz ________
225 MHz ________
400 MHz ________
5. Record levels:
75 MHz ________
225 MHz ________
400 MHz ________
6. Calculate return loss for Steps 3 and 5 and record ________
7. Verify VSWR:
75 MHz <1.3 ________
225 MHz <1.3 ________
400 MHz <1.35 ________
SWR CONNECTOR
10. Record levels:
75 MHz ________
225 MHz ________
400 MHz ________
11. Calculate return loss for Steps 3 and 10 and record ________
12. Verify VSWR:
75 MHz <1.3 ________
225 MHz <1.3 ________
400 MHz <1.35 ________
(9) Marker Beacon
7. Verify 400 Hz (
±
0.02%) with <2.5% distortion and AM Depth of
95% AM (
±
5% AM) ________
9. Verify 1300 Hz (
±
0.02%) with <2.5% distortion and AM Depth of
95% AM (
±
5% AM) ________
11. Verify 3000MHz (
±
0.02%) with <2.5% distortion and AM Depth of
95% AM (
±
5% AM) ________