Panasonic 744T Speciﬁcations

Speciﬁcations

System

	Sampling Frequency	internal: 32, 44.1, 48, 48.048, 88.2, 96, 96.096, 176.4, 192 kHz
		external: 32–192 kHz via word clock input
	Internal Data Path and	32 bit, 192 dB dynamic range
	Processing
	A/D, D/A Converters	24 bit, 192 kHz sample rate maximum. A/D converters on socketed, field-upgradeable
		daughter board
	A/D Dynamic Range	114 dB, A-weighted bandwidth
		110 dB, 20 Hz – 22 kHz bandwidth
	D/A Dynamic Range	112 dB, A-weighted bandwidth
		108 dB, 20 Hz–22 kHz bandwidth
	Metering	76-segment (4 x 19), sunlight-viewable
		selectable peak, VU, or peak (with or without peak hold) with VU ballistics, variable brightness
Analog Input

(all measurements at Fs 96 kHz, 24 bit unless noted)

	Frequency Response	Mic or Line: 10 Hz–40 kHz, +0.1, −0.5 dB (gain controls centered)

	Equivalent Input Noise	Mic: −133 dBu max (−135 dBV), 50 ohm source, A-weighted filter
		Mic: −131 dBu max (−133 dBV) max, 50 ohm source, 20 Hz–20 kHz BW flat filter, gain fully up
		Mic: −130 dBu max (−132 dBV), 150 ohm source, A-weighted filter
		Mid: −128 dBu max (−130 dBV), 150 ohm source, 20 Hz–20 kHz BW flat filter, gain fully up

	THD + Noise	Mic: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, −15 dBu input)
		Line: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, +16 dBu input)
	Gain	Mic (normal gain mode): 25–70 dB
	(input dBu to −20 dBFS)	Mic (low gain mode): 10–55 dB
		Line: −6–18 dB, 0.1 dB increments

	Input Clipping Level	Mic input: −5 dBu minimum (normal gain mode, gain control fully down)
		Mic input: +10 dBu minimum (low gain mode, gain control fully down)
		Line input: +26 dBu minimum (gain control fully down)

	Input Topology	Mic and Line: fully electronically balanced, RF, ESD, short, and overload protected; pin-2 hot,
		pin-3 cold

	Gain Matching	Line inputs: ±0.1 dB, channel-to-channel

	Common Mode Rejection	Mic: 40 dB minimum at 80 Hz
	Ratio
	High-Pass Filters	40, 80, 160, 240 Hz @ 12/18/24 dB/oct (all menu selectable)

	Mic Powering	48 V phantom through 6.8k resistors, 10 mA per mic available, menu-selected per channel in mic
	(each XLR selectable):	or line level positions
	Mic Input Limiters	analog (pre-A/D converter), dual-stage optocoupler and FET,
		−4 dBFS threshold, 20:1 limiting ratio, 5 mS attack time, 200 mS release time
Output Analog
	Line Output Clipping	+24 dBu minimum, 10k ohm load
	Level
	Attenuation & Resolution	0–40 dB, 1 dB increments

	Output Topology	Line: fully electronically-balanced, RF, ESD, short, and overload protected; pin-2 driven hot,
		pin-3 driven cold; let pin-3 float for unbalanced connections.