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6
DTD-16 + G2 Installation and Operation Manual
INSTALLATION
Installation/Operation
LED Indicators
“PWR”: Power LED (Green).
“DV” LED: Indicates valid DTMF tone detection (Yellow).
“PGM” LED: Flashes when in Programming Mode (Red).
“DAT” LED: Indicates serial data transfer (Red).
“K1”- “K8” Relay LEDs: Lit when the corresponding relay is on.
Program (PGM) button
Used to toggle in and out of programming mode. See the “Programming” section of
this manual for more information.
Audio Input Gain Adjustment
The front panel “INPUT LVL” control may be used to adjust the DTMF tone detec-
tion sensitivity from –20dBu to +24dBu. This control should be adjusted for solid
DV LED indication while DTMF tone audio is present.
DTMF Tone Detection Jumper Settings
JP1 = DTMF Tone detection jumper (Guard time)
The DTD is equipped with a 4-position jumper, labeled “JP1” on its PCB. This is
used to adjust how quickly DTMF tones are detected. The settings are as follows:
Fast = 50ms ON / 50ms OFF
Medium = 100ms ON / 100ms OFF. (Default)
Slow = 150ms ON / 150ms OFF.
USB PGM Port
This type B USB port is used to connect the DTD-16 + G2 to a computer for con-
figuration via a virtual COM port. See the “Programming” section of this manual for
more information.
RS-232 Serial PGM Port (RJ-11 Jack):
This RJ-11 jack is used to connect the DTD-16 + G2 to a computer’s COM port for
configuration via RS-232 serial using the included reverse modular cable with 9-pin
“S9” female D-sub adapter. See the “Programming” section of this manual for more
information.
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