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DTE-16 Installation and Operation Manual
DESCRIPTION
PRODUCT DESCRIPTION
The tiny TOOLS DTE-16 is a feature rich DTMF tone/sequence encoder that is user
programmable to encode up to 15 tone sequences or a single tone via any one of 16
contact closure inputs and/or the RS-232 serial port. Each input may be programmed
to generate a tone for the duration of the closure or tone burst immediately on com-
mand. A passive mixing network is provided to mix both the program and encoder
audio if required. Programming is performed using a non-dedicated PC’s COM port
equipped with Windows HyperTerminal. Features: Encodes all 16 DTMF tones;
adjustable tone generation time; balanced low Z output, passive program mixer
input; surge protected power supply; front panel status for power, valid DTMF tone,
serial data activity, recessed programming push button with LED indicator and
recessed output level control with a range of off to +4dbm. All connections are on
screw terminals except for the DB-9 female serial port connector. The DTE-16 may
be set on a desktop, wall mounted or up to four units mounted on the RA-1, Rack-
Able mounting shelf.
INSTALLATION
Please examine your DTE-16 carefully for any damage that may have been sus-
tained during shipping. If any is noted, please notify the shipper immediately and
retain the packaging for inspection by the shipper. The package contains the DTE-
16, 9Vac @ 1 amp wall power transformer, serial cable and this manual.
Installation of the DTE-16 in
high RF environments
should be performed with
care. Shielded cable is suggested for all audio connections. All shields should be
tied to the “GD” Ground terminals. The station ground should be connected to the
chassis ground screw located on the far right side of the DTE-16 as viewed from the
rear. It is recommended that all cables connected to the DTE-16 be looped through
ferrite cores to suppress RF. Surge protection with RF filtering such as the Tripp-
Lite “ISOBAR 4 or 6” is also suggested for the wall transformer.
Input:
The input is resistively mixed with the output of the internal DTMF tone encoder.
Connect your program audio source equipment to the rear panel screw terminals
labeled:
MXA and MXB.
Mixed Output:
Connect the
OPA and OPB
terminals to your input equipment. For unbalanced
loads, use the
"OPA"
and
GD
terminals only.
Do not connect the "-" terminal to
ground.
Shields should be tied to the
“GD”
terminals
Output level:
The front panel “Send Lvl” control may be used to adjust the DTMF tone output
from off to +4dBu. The factory setting is
0dBu
.
Channel Control:
Connect a normally open dry contact closure between the
“GD”
terminal and any of
the 16 channels. These are labeled
IN1 thru IN16.
The DV LED will light when
valid tones are active.
