Ecler APA1400, Service Manual

Page: 121 / 138

51-0044-0100 F01-00Anglès.doc Sheet 1 of 3
PRELIMINARY:
- Connect the verifier’s mains plug, the power ON indicator LED should light up.
- Connect TAWA 112 or TAWA 215 to the verifier through the 7-wired bus and both jack-
type connectors (right R, left L).
- Release the HIGH-LOW switch.
- Connect the signal generator to the RCA-type input, and apply a 0dB level 150Hz input
signal.
- Connect the millivoltmeter-oscilloscope set to the unit's RCA-type output.
VERIFICATION of TAWA 112
- HIGH-level outputs :
- 150 Hz -6dB
- 400 Hz -1dB
- 1kHz -2dB
- 10 kHz 2,5dB
- 50 kHz 0dB
- LOW-level outputs :
- Press and lock the HIGH-LOW pushbutton.
- 20 Hz 0dB
- 60 Hz 1dB
- 75 Hz 2dB
- 150 Hz -6dB
- Check that when the ST-MONO labelled pushbutton is pressed, the right-channel output
signal is cutted off.
VERIFICATION of TAWA 215
- HIGH-level outputs :
- 20 Hz 0,5dB
- 50 Hz 2dB
- 200 Hz -1dB
- 1kHz -4dB
- 10kHz 2dB
- LOW-level outputs :
- Press and lock the HIGH-LOW pushbutton.
- 20 Hz 0,5dB
- 50 Hz 2dB
- 150 Hz -6dB
- Check that when the ST-MONO labelled pushbutton is pressed, the right-channel output
signal is cutted off.
author:
Queralt
date:
010425
project:
F01-00
product:
TAWA112/215
ECLER
approved:
num:
51.0044
version:
01.00
title:
VERIFICATION PROCESS