Technics RS-676US

ADJUSTMENTS
I. TEST INSTRUMENTS
1. Prepare test instruments which are equivalent in accuracy to those shown below.
2. The test instruments should be inspected and corrected by specialists once every 6 months, because a long
period of use without maintenance may increase errors in indication.
3. “Warm up” the test instruments for 30 minutes and the set to be measured for 10 minutes before taking
the measurements. If not, there may arise an error or difference between the initial value and the stablized
value measured after “Warming up”. :
4. Specifications of Test Instruments.
(1) Audio Frequency Oscillator
a. Oscillation Frequency
5 Hz~500 kHz (5 ranges)
b. Frequency Tolerance
+(3% +1 Hz)
c. Sine Wave
* Output Voltage 5 Vrms+10% (open)
(at 25°C) 2.5 Vrms +10% (600Q load) f
* Output Frequency Response Within +0.2dB 20Hz~20 kHz
Within +0.5dB 5Hz~500 kHz
* Distortion Factor Not more than 0.05% 200 Hz~20 kHz
Not more than 0.5% 5Hz, 500 kHz
* Output Impedance 600Q Unbalanced Within +15%
* Output Attenuator 0,20dB Error: Within +0.2 cB
d. Temperature in Use of Set
Temperature=O0~40°C: Humidity=90% or less
(2) Automatic-spot Distortion Meter (with Vacuum Tube Voltmeter)