Glossary

Term	Definition
+48 V	Phantom power supplied through a microphone input for compatible condenser microphones and other active equipment.
ADAT	A multichannel digital audio format carried over optical connections.
ORBIT	ORBIT Variable Impedance Control for Horizon 8P Mic/Line inputs, with Low, Medium and High settings.
Clock master	The device that provides the timing reference used by the other connected digital audio devices.
Clock source	The timing reference used to synchronise a digital audio system.
Control Wheel	The main rotary control on the Horizon 8P front panel, used to adjust parameters and navigate the Motion UI.
Cue mix	A monitoring mix created for a performer. On Horizon, separate cue mixes can be created using Independent Mixes.
DAC	Digital-to-analogue converter. Converts digital audio into an analogue signal.
DAW	Digital Audio Workstation. Software used to record, edit, mix and play audio.
dB	Decibel. A unit used to express the level or ratio of an audio signal.
dBFS	Decibels relative to digital full scale. 0 dBFS represents the maximum digital level.
dBu	A measurement of analogue signal level referenced to 0.775 V RMS.
D-sub	A multi-pin connector used to carry several analogue audio channels through a single connection.
Fast Scroll Bar	A Mixer control used to move quickly through larger channel configurations.
Firmware	Software stored within Horizon hardware that controls its operation.
Gain	The amount by which an input signal is amplified.
HPF	High-pass filter. Reduces frequencies below the selected cutoff frequency.
Independent Mix	One of four separate monitoring mixes, Mix A–D, that can be created independently of the Main Mix.
Instrument Input	An input designed for the direct connection of instruments such as electric guitar or bass.
Latency	The delay between a signal entering a system and the resulting audio being heard or recorded.
Line level	An analogue signal level used between compatible audio devices.
Main Mix	The primary monitoring mix in Horizon Control.
Mic/Line	The Horizon 8P preamp input mode used for microphone- or line-level sources.
Monitor Profile	A saved monitoring configuration associated with a Speaker Layout.
Monitoring path	The signal path used for listening. Mixer monitoring controls can adjust this path without changing the input signal sent for recording.
Motion UI	The Horizon 8P Motion UI used to show metering, parameter values, input and output summaries, monitoring states and settings.
Pad	A control that attenuates an incoming signal before amplification. Horizon 8P provides 10 dB of Pad attenuation.
Phantom power	See +48 V.
Polarity invert	Reverses the polarity of an audio signal. Horizon uses polarity inversion as part of its Mid/Side monitoring mode.
Primary device	The Horizon device responsible for active monitoring in a multi-device system. Only one connected Horizon device is Primary at a time.
Routing Matrix	The Horizon Control view used to route available audio sources to the physical outputs of a selected Horizon device.
S/PDIF	Sony/Philips Digital Interface Format. A two-channel digital audio format.
Sample rate	The number of times per second an analogue signal is measured when converted to digital audio.
Speaker Layout	A saved monitoring speaker channel configuration used by Monitor Profiles. Physical output routing is configured separately in the Routing Matrix.
Stereo pair	A supported sequential channel pair, such as 1–2 or 3–4, linked for operation as a left and right pair.
Thunderbolt	The computer connection used by Horizon for audio and control data and for daisy-chaining additional Horizon devices.
TRS	Tip-Ring-Sleeve. A three-conductor jack connection commonly used for balanced analogue audio.
Virtual Channel	A Mixer channel carrying playback audio from the host computer.
Word clock	A timing signal used to synchronise digital audio devices.
Ω	Ohms. The unit used to measure electrical resistance or impedance.