Test Setup For Pager And Alert Functions With Crt Display - Motorola R-2001A Service Manual

R-2001A
RFIN/OUT
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PAGER
Figure 4-9. Test Setup for Pager and Alert Functions with CRT Display
c. Troubleshooting Receiver audio stages using "DVM and Signal Generate" function simultaneously.
1. Select the DVM function by means of the arrow keys located below the DISPLAY column.
2. Using the keyboard "down" arrow position the CRT cursor adjacent to the "DVM Mode"
graphics.
3. Enter a "1" via the keyboard to select AC voltage measurement or a "2" for DC voltage
measurement selection.
Set up the desired on-channel RF signal to provide an input to the receiver.
Set Function switch to "Gen". Set appropriate RF output level (as indicated on the CRT screen).
Apply test signals from the receiver audio stages to the instrument's "Vert/Sinad DVM/Counter
In" input. DC Voltage measurement points are also applied to this same input. The supplied XI
test probe may be used.
Refer to the CRT screen for an auto-ranging and analog/digital indication of either DC voltage
or AC voltage and corresponding dBm level.
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