Fostex X-24 service manual Mixer Section, Recorder Section

X-24

MIXER SECTION (continued)

Distortion
(With 400 Hz HPF & 30 kHz LPF)	0.05 % or less (Input: 1 kHz / 0 dBV signal, MIC GAIN: LINE, LINE
	OUT: 0 dBV.)
	0.2 % or less (Input: 1 kHz / 0 dBV signal, MIC GAIN: LINE,
	PHONES: 3 mW / 16Ω.)
Fader Attenuation	70 dB or more at 1 kHz (from standard fader position)
Crosstalk	60 dB or more at 1 kHz (Input: MIC IN, MIC GAIN: LINE, OUT: SEND
	OUT. Measure level at non-input channel.)
PAN Crosstalk	42 dB or more at 1 kHz (Input: MIC IN, MIC GAIN: LINE, OUT: LINE
	OUT. Measure level at non-input channel.)
Click Noise
Power on / off	-20 dBVp-por less
Other switching	-30 dBVp-por less
Shock Noise	-30 dBVp-por less (Measure noise level when one side of appliance is
	dropped 3 times from 5 cm height.)

RECORDER SECTION

Tape Speed	9.5 cm/s ± 1.5 % (3000 Hz ± 45 Hz when reproducing TCW-211 test
	tape.)
Wow & Flutter
PLAY	0.25 % or less (TCW-211 test tape, ANSI WTD.)
REC & PLAY	0.30 % or less (AC-514 test tape, ANSI WTD.)
Pitch Control
MIN (PITCH VR: Fully CCW)	-45 % or less (TCW-211 test tape)
MAX (PITCH VR: Fully CW)	+12 % or more (TCW-211 test tape)
Fast Winding Time (FF / RWD)	150 ± 20 sec. (TAPE: C-60)
Tape Counter Deviation	0 ± 7 (FF from BOT to EOT and then RWD to BOT again.)
Standard Level
PLAY	-10 ± 1 dB (TCW-231 test tape)
REC & PLAY	-10 ± 1 dBV (AC-514 test tape, 1 dB or less of level difference between
	channels is also required.)
Frequency response
PLAY	Test tape: SCW-977 / TCW-284F (NR: OUT)
	+3 dB
	-3 dB
	40 Hz	400 Hz	12.5 kHz
REC & PLAY	Test tape: AC-514 (NR: OUT, recording level: 0 dB)
	+3 dB
	-3 dB
	40 Hz	400 Hz	12.5 kHz

Test tape: AC-514 (NR: IN, recording level: -25dB)

5	dB			6 dB
	250 Hz	10 kHz
			12.5 kHz

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