The TT1 is designed to act as either a beltpack with the ability to inject program material on to an intercom channel OR as a portable master station for IFB (interruptible foldback). A 4-pin male XLR is provided for connection of a standard intercom headset with a dynamic microphone. Control of the level of the program material to be heard in the system is by a rotary control on the front panel. A VU meter (LED-type) on the front panel is used to monitor program input. A recessed control on the front panel permits adjustment of the VU meter sensitivity. Control of the user's headset volume is by a thumbwheel.
The TT1 is plug-in compatible with Clear-Com® and other lesser known 200 ohm (unbalanced) party-line intercom systems.
- Power requirement:
- 24~30 VDC, 10 mA quiescent, 40 mA max. w/VU meter active Headphone output: 8~4K ohm acceptable, 200 ohm ideal
- Microphone input:
- 200 ~ 600 ohm Dynamic
- Sidetone rejection:
- >50 dB
- Audio bridging impedance:
- 200 ohm unbalanced
- Program input:
- 600 ohm, line level, balanced
- 3.70 x 4.30 x 2.50 in. (93.98 x 109.22 x 63.5 mm)
- 13.5 oz. (0.385Kg>)