DEVIS (v.2) Operator’s Manual
Keywest Technology Early Warning Systems
Keywest Technology
14563 W. 96
th
Terrace
Lenexa, Kansas 66215
800.331.2019
www.keywesttechnology.com
21
KWT TM 2-1-DEVISOM
14 Mar 03
Change 02
The GPI’s are used to trigger an external switcher device such as the MegaHertz 1x8 base-band
video switch. This is to force all channels on your network over to the emergency presentation.
Manual selection of the GPI will also force the switch to dump DEVIS video on all eight
channels.
DEVIS will go through a self-test routine when first powered up—if your GPI cable is connected
to DEVIS and the switcher, you will see the switch make several video source changes as the
self-test procedure occurs. It is recommended that you do not connect the DEVIS GPI to the
MegaHertz switcher until the DEVIS has completely booted up and is running. This will avoid
annoying self-test screens being seen by the viewer.
TELEPHONY (DTMF) SETUP
DEVIS can be accessed and controlled via telephone, through DTMF. Dual-tone, Multi-
Frequency refers to the touch-tones you hear when dialing a phone. DEVIS can start any of the
presentations by entering tones from any U.S. type system land-line or cellular phone in the
world, as long as DEVIS is connected to a phone line itself.
Click on the DTMF SETUP button on the DEVIS main screen (FIGURE 19).
Figure 19
