User`s manual

6
1.1.1. MacFi-mpe - Enhanced Features
The MacFi-mpe version adds the following features to the
standard unit:
-RS-232 (Serial) control of recording and playback
-RS-232 (Serial) download of MPEG layer 1, 2 or 3 (MP3) files.
-Synchronization Relay
-Front mounted controls
General Specifications
Audio Coding:
Recording: MPEG 1, Layer 3(Variable B
it Rate)
Playback: MPEG 1, Layer 3(VBR) or MPEG 1,
Layer 1, 2 & 3 via audio file transfer
capability of the MacFi-mpe
Audio Quality:
Dynamic Range: 80dB, Typical
Signal to Noise: 80dB, Typical
Frequency Resp.: 50Hz to 15kHz
THD: < 0.5% at 1kHz, Typical
Audio Input:
Line: 10k ohm, RCA
Mic: 1.5k ohm, 1/8" mini jack, Low Z
Level: +4dBm max., adjustable potentiometer
Audio Output:
Line: 600 ohm(+4dBm max.), transformer
isolated, RCA
Amplified: 4 watts into 8 ohm, 2 pin pluggable
terminal
Level: Adjustable potentiometer
Audio Memory:
Type: FLASH EPROM
Capacity: 32MB, 40 min local record
Power Requirement:
Input Voltage: 12vdc
Current: 1 amp for Power Amp, 250mA w/o Amp
Connection: 2 pin pluggable terminal
Manual Control Interface:
Pushbuttons: Record, Start/Stop, Select.
LED's/Display: Overdrive, Audio Sense, Record Status
LED's, message number display.