Instruction manual

DCI1 • 25
PROBLEM:
The relays seem to get warm when they are on for a while.
SOLUTION:
This is normal. These 9 VDC relays are rated to work up to
almost 12 VDC across their input windings without any problem. The series
limiting resistors (R14, 15,16, and 17) keep them well within range over the
normal 12 to 15 VDC input operating voltage. Their nominal operating power
is about 450 mW so they will get warm to the touch.
PROBLEM:
It keeps giving me an error tone and it does do what I want.
SOLUTION:
Press ∗ to reset the system. Then repeat your security code and
command string. More than likely you just wound up out of synch with the
DCI1 so you are not entering the data it is looking for. When in doubt, press
the ∗ button to reset the command entry algorithm back to a known state. Us-
ing the ∗ reset feature has no effect on the state of the relays, they hold their
last instruction state forever unless power is removed from the system or the
user commands a new state change.
PROBLEM:
I forgot my security code!
SOLUTION:
No problem, just follow the instructions in the Using Yout DCI1
DTMF Controller Interface section to program a new one.
PROBLEM:
I’m trying to feed audio into the J6 input but it doesn’t work.
SOLUTION:
Depending on your audio level, you may need to replace R8, a
10K ohm resistor (brown-black-orange), with a jumper wire to connect it di-
rectly to ground. This will increase your audio levels if needed.
Have another set of eyes look over your work. Here at the shop we have often
run into a “stone wall” of a problem only to have a fellow technician see our
obvious error. It is sometimes very difficult to see your own mistakes.