Chapter 3 Calibration
Revision W HF Series X-ray Generators - Service Manual
3-18 Quantum Medical Imaging, LLC
4. The "Slope/Lvl" setting determines if the ion chamber connected to
the selected receptor AEC output is of the "slope/ramp" (Slope) or a
DC Level (Level) type. This setting is ignored unless the "Universal
AEC" selection is chosen. The "Standard AEC" board is always
"Slope".
5. When all ion chamber settings are appropriately configured, press the
key located next to the Previous Screen field.
6. Repeat above steps for each of the other ion chambers interfaced
with the generator.
Receptor Relay Configuration
The "Wall Relay" setting controls whether the "Wall Relay" on the Univer-
sal AEC Board A11 AY40-027S is energized. Similarly, the "Table Relay"
setting controls whether the "Table Relay" on the Universal AEC Board
A11 AY40-027S is energized. These settings provide +28 VDC output for
operation of a Siemens bucky. If this field is set to ON, the relay is
asserted when:
• The receptor switch that accesses this receptor is depressed on
the OCP panel or
• When an APR Technique requests this receptor.
The wall or table relay will remain energized until a receptor with "Wall
Relay" OFF or "Table Relay" OFF, respectively, is selected.
Depending on the configuration of the generator, set the receptor relays
as indicated in Table 3-1, 3-2, or 3-3.
Tomo Setting
Important! On generators that will be interfaced
to a tomography system; Set Tomo Mode to "Off"
prior to performing generator calibration, then set
Tomo Mode back to "On" following calibration.
The generator may be interfaced to operate with either a Siemens or Pausch
tomography system (refer to Chapter 2, ASSEMBLY & INSTALLATION for wir-
ing instructions). The generator must be equipped with a "Universal" type
AEC Board (i.e., AEC Board A11 (AY40-027S) must be installed). To configure
the generator for tomo operation, proceed as follows:
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