Rohde & Schwarz CRTU-RU Service Manual page 19

Radio Unit R&S
CRTU-RU
Contents
1 Performance Test................................................................................................ 1.1
Test Options......................................................................................................................................1.1
Necessary Documents .....................................................................................................................1.1
Measuring Instruments and Auxiliary Equipment.........................................................................1.2
Test Setups .......................................................................................................................................1.3
Reference Frequencies ............................................................................................................1.3
TX Level Measurements ..........................................................................................................1.3
General TX Measurements ......................................................................................................1.4
RX Level Measurements ..........................................................................................................1.5
General RX Measurements......................................................................................................1.5
RX Demodulation Measurements ............................................................................................1.6
Tolerance Analysis ...........................................................................................................................1.6
Manual Test Procedure ....................................................................................................................1.7
Selftest .....................................................................................................................................1.7
Interface Test ...........................................................................................................................1.8
IEC-bus Interface ...........................................................................................................1.8
RS-232 Interface ...........................................................................................................1.8
Control and Sync Bus (CSB) and Trigger Test of CRTU-RU ........................................1.8
Reference Frequencies ..........................................................................................................1.12
REF IN .........................................................................................................................1.12
REF OUT 1 ..................................................................................................................1.13
REF OUT 2 ..................................................................................................................1.13
TX Frequency Accuracy .........................................................................................................1.13
TX Frequency Settling Time...................................................................................................1.13
TX Level Error ........................................................................................................................1.14
VSWR ....................................................................................................................................1.14
TX Level Settling Time ...........................................................................................................1.14
TX Harmonics ........................................................................................................................1.14
TX Non Harmonics.................................................................................................................1.15
TX In-Band Spurious Signals .................................................................................................1.15
TX Fixed Spurious Signals .....................................................................................................1.15
TX SSB Phase Noise .............................................................................................................1.15
TX Residual FM......................................................................................................................1.16
TX Residual AM .....................................................................................................................1.16
TX Carrier/Sideband Suppression, Max. Distortion ...............................................................1.16
1140.0050.82 I-1.1
Contents of Chapter 1
E-4