Specification

Phi Tronics T.B.U. Back Picture
INPUT
Cleanfeed input: 10K ohms balanced-floating 0dBu.

OUTPUT
Telco output to desk: 50 Ohm balanced-floating 0dBu.

LEVEL
0dB nominal, +8dBu maximum.

CONNECTORS
Stereo jack socket
Tip = Phase
Ring = Non-phase
Sleeve = Screen

TELEPHONE
Isolated and floating with cable and line jack type 6/502.
Line hold paddle switch....latching.
Line hold LED indicator.
Remote line hold stereo jack, 24V dc to hold.
Remote jack socket
Tip = 24V +ve
Ring = 0V
Sleeve = N/C

HANDSET
BT linejack socket connector type 431A.

REJECTION
35dB nominal at 1KHz, 20dB for typical programme material peaking
at +4dB to the telephone line.

RESPONSE
300 Hz to 3 KHz -3dB reference 0dB at 1 KHz.

CONTROLS
Set R, set C for best rejection to suit the line.

PRESETS
Internal presets for the audio levels.

DIMENSIONS
135mm x 40mm x 185mm.

WEIGHT
500grms.

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