Tektronix CSA 803C Marine Radio User Manual


 
Performance Tests
Performance Verification
4Ć26
ăStep 4:ăIdentify the trace as follows:
Def Tra icon touch.............................................
Identify Channel (2) touch...................................
Select Enter Desc touch....................................
ăStep 5:ăSet the mainframe Vert Offset as follows:
Vert size icon touch............................................
Set Vert Size:M2 to 2 mV/div adjust upper knob................
ăStep 6:ă Set Averaging as follows:
Acquire Desc (in major menu) touch.............................
Average N (in popĆup menu) touch..............................
ăStep 7:ăSelect the Mean Measurement as follows:
MEASURE button press........................................
Measurements (in major menu) touch........................
Mean (in the Measurements popĆup menu) touch.............
Compare & References (in major menu) touch...................
Save Current Meas Values as References (in popĆup menu) touch.
Compare off (to on in popĆup menu) touch.......................
ăStep 8:ăSet the Voltage source to 8 mV.
Select Remove/Clr Trace (in major menu) touch...................
Select Clear Trace (in popĆup menu) touch.......................
ăStep 9:ăWait for averaging to complete. Then, check that the DMean
value is to be within 7.8 mV (lower spec) and 8.2 mV (upper spec).
NOTE
Averaging will complete faster if you exit the measurement menu
and then return when averaging is complete. Alternatively, use the
dial to move the Main Size setting two notches higher than the
default setting.
ăStep 10:ăChange the polarity of the voltage differential coming from the
precision voltage Source. Check that the DMean value is between
-7.8 mV and -8.2 mV.