Specifications - Akai QX-3700 Service Manual

II. Specifications
CONDITIONS OF SPECIFICATION MEASUREMENTS
1. STANDARDS ENVIRONMENTAL CONDITIONS
TEMPERATURE : 23°C
HUMIDITY : 65%
IF NO DOUBT ARISES IN THE JUDEMENT, THE MEASUREMENT CAN BE MADE UNDER
CONDITIONS OF TEMPERATURE 10 TO 35°C AND HUMIDITY 45 TO 85%.
2. REATED POWER
3. LOAD IMPEDANCE
SPEAKER OUTPUT : RESISTIVE LOAD AS SPECIFIED.(4 OHM)
PREAMPLIFIER OUTPUT AND RECORDING OUTPUT : 47k OHM RESISTOR (± 5%)
VIDEO OUTPUT: 75 OHM
4. STANDARD OPERATING CONDITION AND METHOD OF MEASUREMENT
a) OPERATION METHOD, SETTING POSITION OF THE UNIT STARTING CONDITION
FOR THE MEASUREMENT SHOULD BE MAINTAINED FOR TESTS OF AMPLIFIER
SECTION AS EIA-RS-490, FOR TEST OF TUNER SECTION AS IHF-T-200.
b) EXCEPT AS OTHERWISE SPECIFIED HEREIN, ALL TESTS SHALL BE MEASURED AT
FRONT CHANNELS AND SET THE SELECTOR POSITION.
c) MODULATION OF FM DODE
d) MODULATION OF FM STEREO MPX.
e) MODULATION OF MW
f) REF. OUTPUT

Specifications

1. FM Section
FM Electrical Specifications (Text Point at Line Out)
Measurement Specifications
Description
FM RANGE 87MHz~108MHz
≤20uV
30dB S/N
AUTO STOP 30±5dBuV
SENSITIVITY
OUTPUT LEVEL 0.50±0.1Vrms
≥20dB
STEREO
SEPARATION
SUPPLY AC: 220V 50Hz
1HF
BPF
Yes
Yes
75KHz DEVIATION AUDIO 1KHz 75 OHM
67.5KHz DEVIATION
7.5KHz PILOT
AUDIO 1 KHz
30% MOD. AUDIO 1KHz
LINE OUT
Measurement Condition/Method/Remarks
FM Measu. SSG
MODE Freq. Level
Mono 98MHz Adjust
Auto 98MHz Adjust
Mono 98MHz 60dBu
Auto 98MHz 60dBu
- 3 -
MEASURED MODE
Others
Output level ratio of modulation
OFF to ON Pilot : ON, R ch :
ON
Measure both channel test
point at Line Out