Motorola R-2001D Operator's Manual page 73

AM MODULAnON TEST
1. Connect the Analyzer's RF In/Out to the output connector of the transmitter under test, as shown in figure 4-12. Set
FUNCTION to Monitor AM.
2. Connect the Analyzer's Mod Out connector to its Vert/Sinad/Dist input connector and to the transmitter's micro-
phone input using a BNC tee connector.
3. Set DISPLAY to DYM/Dist and the AC voltmeter function.
4. Adjust the I KHz Level control to provide the proper input signal level to the transmitter. Refer to the transmitter's
service manual to obtain the value for this level.
5. Key the transmitter. Read 0J0 AM on the display. Change to IF DISPLAY to observe the RF envelope's distortion.
6. To check the transmitter's distortion, connect the Analyzer's Demod Out connector to the Yert/Sinad/Dist input
jack. Set DISPLAY to DYM/Dist and Distortion. Read 070 distortion on the display.
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