Vixen AGA-1 - Manual (Page 3)

Note:
(1) AGA-1 works with DD-1, DD-2 or SkySensor 3D having a cable
connecting to AGA-1. To enable you to use with DD-1, DD-2 or
SkySensor 3D, these controllers should be modified at Vixen’s factory.
AGA-1 cannot be used with DD-1 or SkySensor 3D attached to
ATLUX equatorial mounts.
(2) AGA-1 can be used only with the NTSC type CCD video camera
and monitor.
DESCRIPTIONS OF AGA-1
Ⓓ Guide Correction Indicators
When the guide correction is being made by AGA-1, one of the red
indicators is lit. When the auto-guide is running without any correction,
the center green indicator is lit.
Ⓔ Power-On Indicator