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ADAPTER, TONE SIGNALING
TA-977/PT
NSN: 5805-01-040-9653
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The TA-977/PT, when mounted on the side plate of the SB-22/PT and connected to the switchboard emergency operators’ terminals, provides 16 dual tone signaling capability to Switchboard Telephone Manual SB-22/PT.
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Output Frequencies:
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High Group (Hz) ± 0.3%
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Low Group
(Hz) ± 0.3%
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1209
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1336
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1477
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1633
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697
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1
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2
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3
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FO
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770
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4
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5
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6
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F
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852
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7
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8
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9
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I
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941
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R
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O
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C
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P
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Output Level:
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-7 dBm ± 1 dB with 600 ohm load
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Current Drain:
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7 milliamperes maximum operating
0.1 microamperes maximum non-operating
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Distortion:
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2% maximum total harmonic
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Output Impedance:
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600 ohm ± 10% when activated
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Temperature:
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-70°F to +160°F operating
-80°F to +170°F storage
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Environmental
(MIL-STD-810C):
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Temperature, Humidity, Rain, Altitude, Bounce,
Drop, Bench Handling, Salt Fog, Fungus
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STAR DYNAMIC CORPORATION, 100 Outwater Lane, Garfield, New Jersey 07026.
Phone: 973-340-3883 Fax: 973-340-1530
©2003 Star Dynamic Corporation. All rights reserved.
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