Sedecal SHF-310 - Digital Ma Loop Closed

HF Series Generators
Calibration
CA-1036R2
11
2.4 DIGITAL mA LOOP CLOSED
Extended Memory Locations E03 and E05 contain the calibration factor for
Digital mA Loop Closed. Each number above or below the indicated in the
Memory Locations increases or decreases respectively the mA gain value.
Values in E03 and E05 Memory Locations are only related to the
Generator performance (they are not related to the X-ray Tube
installed), so values in these Memory Locations are factory
adjusted. Only perform this procedure if the HT Controller Board
and/or HV Transformer have been replaced in the unit.
The mA Gain for Digital mA Loop Closed is calibrated by performing the
following steps:
1. With the Generator power OFF, set:
G Dip switch 3000SW2-2 on the HT Controller Board in “Off” position
(enables Filament and Rotor Interlocks).
G Dip switch 3000SW2-4 on the HT C ontroller Board in “On” position
(Digital mA Loop Open / Filament Current Constant).
G Remove the link between the banana plug connections on the HV
Transformer. Connect the mAs Meter to the banana plug
connections to measure mA or mAs.
2. Calibration of E03 and E05 Memory Locations is performed by means of
the “Auto Calibration” menu.
EACH TIME THAT AUTO-CALIBRATION IS ACTIVATED IN
ONE OF THESE MEMORY LOCATIONS, CALIBRATION DATA
STORED FOR THIS MEMORY LOCATION IS DELETED AND A
NEW CALIBRATION FOR IT WILL BE REQUIRED.
Note .