Telos Zephyr Xstream - Manual (Page 68)

USER’S MANUAL
Section 3: GUIDED TOUR of the HARDWARE 56
Local Monitor Mix 2 can be set up to monitor Snd (send) Audio, Rcv (receive) Audio or a
combination of both. The audio to be monitored is controlled by the button adjacent to the
headphone 4 knob on the front panel. The ratio of send to receive audio and other parameters
are set up in the seventh AUDIO menu.
Headphones 2 – 4 have individual front panel volume
controls. The A and B line outputs are at +4 dBu nominal level.
These are standard ¼” stereo jacks. They are designed to handle headphones with impedances
down to 10 ohms. The output level is approx 3 watts into 20 ohms and will vary depending on
the headphone impedance.
XLR Monitor Mix Outputs
By default these XLR outputs are fed from Local Monitor Mix 2. On units with rev F or later MIC
Audio Boards (part # 1401‐00008‐006 or later) the unit can be configured to be fed from Local
Monitor Mix 1. These are XLR male sockets with the following pin outs.
PIN FUNCTION
1 Ground
2 Audio +
3 Audio -
The analog audio outputs have the following characteristics:
• Active differential
• Output level; Line Level output at +4 dBu nominal. The Level Out option in
the eighth AUDIO menu allows selection for Consumer (‐10 dBu) or
Professional (+ 4 dBu) output levels for these outputs. 18 dB headroom is
provided (+22 dBu maximum output level).
• Impedance: < 33 ohm x 2
If a single‐ended (unbalanced) output is required, connect between ground and either of the
output pins. Do not ground the unused pin. Use the same pin on both outputs to maintain
phase.
AC (Mains) power
The AC receptacle connects mains power to the unit with a standard IEC
(International Electrotechnical Commission) power cord and provides an on/off
switch. The power supply has a “universal” AC input, accepting a range from
100 to 240 VAC, 50‐60 Hz. A fuse is located inside on the power supply circuit
board.