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Performance Tests
CSA 803A Service Manual
4Ć17
This procedure shows the setup and lists the test steps for calibrating Loop
Gain and Offset Null. Note that this is an optional enhanced accuracy proceĆ
dure and it fine tunes internal channel processing circuitry in conjunction
with any operational sampling head type being used (the 067-1413-00
calibration head is a service device and does not require system calibration).
This procedure also initiates a builtĆin CSA 803A program which causes the
mainframe to remember which sampling head type was used in the calibraĆ
tion. In this way, preĆcalibrated heads can be interchanged without requiring
recalibration.
Setup to Calibrate a Sampling Head
CSA 803A
50 W Termination
(not connected yet)
(not connected yet) 12I RF Cable
Sampling Head (except SDĆ14)
Procedure to Calibrate a Sampling Head
ăStep 1:ăPowerĆup and Initialize as follows:
Set the ON/STANDBY switch to ON rocker / press..................
UTILITY button press...........................................
Initialize (in major menu) touch..............................
Initialize (verify) touch......................................
ăStep 2:ăSet up first Automatic Calibration as follows:
Press the UTILITY button press..................................
Page to Enhanced Accuracy press..........................
Gain (in major menu) touch.................................
Identify Channel (2) touch...................................
Automatic Calibrate (in popĆup menu) touch..................
Sampling Heads