Specifications

I/O Connectors

1/4” (6.32mm) stereo jack
AUDIO OUT
- TIP = Audio A / Audio A+B @ +4 dBu
- RING = Audio B @ +4 dBu
AUDIO IN
- TIP = Audio return from console (Mix-Minus) -10 dBu ~ +10 dBu
- RING = TELCO output to Solidyne ‘EXT HYBRID’

Operation Modes

MODE A ‘Solidyne Consoles’
- Cellphones A and B in conference with console’s internal hybrids.
- DIP-2,4,5,6 = ON
- Uses 1.80m stereo cable (supplied) from AUDIO IN (BLT200) to EXT HYB connector on Solidyne console.
MODE B ‘All consoles; 1 line input’
- All consoles in conference mode. DIP-2,4,5 = ON
- AUDIO IN: stereo cable (supplied), Tip = return from console / Ring = n/c
- AUDIO OUT: Y-cable (supplied), Tip = console line input / Ring = n/c
MODE C ‘All consoles; 2 line inputs’
- Conference mode. DIP-1,4,5 = ON
- AUDIO IN: stereo cable (supplied), Tip = return from console.
- AUDIO OUT: Y-cable (supplied), Tip = Line A / Ring = Line B.
MODE D ‘Independent cellphones’
- No conference. DIP-1 = ON
- AUDIO IN: stereo cable (supplied), Tip = return from console.
- AUDIO OUT: Y-cable (supplied), Tip = Line A / Ring = Line B.
MODE E ‘2 × BLT200’ (4 cellphones)
- Two BLT200 units, each in A/B conference mode. DIP-2,4,5 = ON
- Connection as per MODE B wiring: Line 1 (Cell 1+2) and Line 2 (Cell 3+4).
- Connect the two return bus inputs in parallel using a Y-adapter.

CONTROL Button Lighting Codes

A – Cellphone on hold: brief yellow light (1 s) with long off period (2 s).
B – Cellphone in communication: slow yellow light (2 s) with short off period (1 s).
- Indicates ongoing interview or searching for a previously paired device.
- Returns to mode “A” when communication is ended (short press).
C – Pairing mode: very fast yellow flashing.
D – Incoming call: solid blue light while phone is ringing.

Audio Performance

Frequency response: 50 Hz – 8,000 Hz (full voice range, Bluetooth 4.0 / 5.0)
Total Harmonic Distortion (THD): < 0.2% (measured input → output in electronic circuits)
Signal-to-noise ratio: > 70 dBA (in all electronic circuits)

Power Supply