Users Manual Part 6

Clinical User’s Guide IBA | 48-7|
Volume 1 - Treatment Session
|Part XI - Patient Positioning and Alignment Using the Universal Beam Triggering Interface |
UTEU Controls
The UTEU rack features the following controls:
 A source selector switch: you can set the switch to any of the following
positions:
 No: no gating equipment is currently in use.
 Ext 1 - Ext 4 (external gating system 1- 4): the system that you intend to use
to perform automatic triggering (refer to Section “Automatic Triggering” on
page 48-6.
 Internal: to perform triggering in manual mode (refer to Section “Manual
Tr i gg er i ng” on page 48-6.
 X-ray triggering toggle button: this toggle button is lit when depressed; this
indicates that you intend to use triggering when taking X-ray images. Press this
toggle button again if you want to deselect it.
 Internal triggering button: this button enables you to perform manual
triggering. This button can only take effect when the selector switch is set to
Internal. Keep this button pressed as long as you want beam to be authorized
by the beam triggering signal; release this button whenever you want beam not
to be authorized by the beam triggering signal.
 Beam On trigger LED: when blinking, the selected gating system is issuing the
beam triggering signal. When this LED is Off, no beam triggering is being
requested.
Note: When the source selector switch is set to the NO position, this LED is
continuously lit, meaning: beam is continually authorized.
 Power supplies OK LED: when lit, the UBTI is powered.