Fostex 750 User Manual

Model 750 User Guide

Issue 3, May 1997

Studio Technologies, Inc.

Page 39

 Model 750

External Monitor Inputs: 2, stereo
Type: electronically balanced, direct-coupled,

compatible with balanced or unbalanced signals
Impedance: 24k ohms
Common Mode Rejection Ratio: 100dB @ DC

and 60Hz, 70dB @ 20kHz, 62dB @ 40kHz, typical
Nominal Level, Input 1: +4dBu
Nominal Level, Input 2: –10 or +4dBu,

selectable

Setup Section:
Record L+R Duration: 12 seconds, maximum
Record L Only, R Only Duration: 4 seconds,

maximum
Record Audio Source: internal microphone or

external line level, selectable
Single Tone Frequency: 400Hz or 1kHz,

selectable
Basic Multi-Tone Frequencies: 1kHz reference,

followed by 10kHz, 1kHz, 100Hz
Advanced Multi-Tone Frequencies: 1kHz

reference, followed by 14 tones (15kHz-50Hz)
Setup Direct Output Level: +4dBu, nominal,

adjustable, range –2 to +10dBu
Status LEDs: 4

Talk Back:
Connects voice audio source to setup direct and/

or main and AUX outputs

Record/Talk Back External Audio Input:
Type: electronically balanced, capacitor-coupled,

compatible with balanced or unbalanced signals
Level Range: –20 to +4dBu, adjustable

Metering: 2
Type: analog panel, VU scale, with signal peak

LED
Calibration: 0 VU = +4dBu, nominal, adjustable,

range –2 to +10dBu
Peak LED: lights at 6dB below internal bus clip

level
Illumination: 14 LEDs (7 per meter)

Polarity:
Input-to-output polarity maintained, except

inversion on headphone output

AC Mains Requirement:
100, 120, or 220/240V, ±10%, factory configured;

50/60Hz; 40 watts maximum

Dimensions (Overall):
19.00 inches wide (48.3cm)

3.49 inches high (8.9cm)

9.50 inches deep (21.4cm)

Mounting:
2 standard rack spaces

Weight:
14.0 pounds (6.4kg)

Specifications subject to change without notice.