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	Mueller Broadcast Design

Model T25-35SA
25/35 Hz Sub-Audible Tone Decoder

Normally used to detect automation switching tones on satellite delivered networks.  It decodes 25 Hz, 35 Hz, and a combination of 25 and 35 Hz tones.  This gives three relay logic outputs with a 250 ms(1/4 second) duration.  The unit is monaural.  It will detect and filter out 25 and 35 Hz tones on one audio channel.  Inputs and outputs are active balanced so they can work in balanced or unbalanced circuits.  The unit runs on 120 VAC and comes in an aluminum box with input level controls and lights to indicate which tone or tones are being received.  

T25-35SA SPECIFICATIONS

INPUT LEVEL:	-20 to +10 dBm
INPUT IMPEDANCE:	9.4 to 14.4 K Ohms, depending on setting of input level control
OUTPUT LEVEL:	0 dBm (600 ohms) nominal, balanced
OUTPUT IMPEDANCE:	150 ohms (unbalanced), 300 ohms (balanced)
OUTPUT CLIP LEVEL:	+24 dBm, 600 ohm load
FREQUENCY RESPONSE:	50 Hz - 50 KHz +/- 1 dB
DISTORTION:	less than 0.05% THD (50 Hz - 15 KHz)
HUM AND NOISE:	-80 dB or better, 50 - 15 KHz
SUB-AUDIBLE TONE REJECTION:	20 dB or better, depending on tone frequency accuracy
MINIMUM TONE DETECT LEVEL:	-25 dB from "0 VU" program level
MINIMUM TIME FOR TONE DETECT:	100 milliseconds at -15 dB tone level
MINIMUM TIME FOR TONE DECODE:	250 milliseconds for relay closure
POWER SUPPLY:	120 Volts AC, 60 Hz, 10 watts, self-contained in unit.
Specifications subject to change without notice.

Get more information available at: http://www.muellerbroadcastdesign.com/products.html and then return to purchase from mwpersons.com.  

Price is $329.00 plus shipping and tax where applicable.

page last edited 04/21/2007