Tektronix CMD 80, User Manual

Page: 202 / 672

Analog: Configuration
CMD 80 Digital Radiocommunication Tester User Manual
3–135
The lower limit line contains two sections. Press E to set the transition
frequency (frequencies D to E, and E to F). Press the B softkey to set the
level for the first section of the lower limit line. Press C to set the level for
the second section of the lower limit line.
Press the AUTO STOP softkey to toggle the auto stop function on and off. If
the auto stop function is on, the test stops if the audio frequency response
exceeds the limit lines. Otherwise, the test runs continuously.
Press the SAMPLE POINTS softkey to select the number of points that are
sampled when the tester takes the test measurements.
Press the DEFAULTS softkey to set the parameters to their preset conditions.
(Typically, the default values are based on the specifications shown in the
table on page 3–57.)
Press the GO TO PARAMETERS softkey to set the parameters for the
AUDIO FREQUENCY RESPONSE (NORMAL MODE). See Fig-
ure 3–107.
Figure 3–107: Analog transmitter qual configuration — audio frequency response
(normal mode) parameters menu
NOTE . Use the TARGET AUD PEAK DEV and AUD PK DEV ERR RANGE
softkeys to set the range of audio peak deviation that must be achieved before the
tester will make the audio frequency response measurement.