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Extracted text from Jvc PCX 270 Service Manual (Ocr-read)
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MATESTAR ELECTRONICS LTD.
PERFORMANCE SPECIFICATIONS
Date : 7 May , 2003
Model : PC-X270
Band : AM / FM (PLL RADIO)
CD CASSETTE System
Page Total 6 Pages
GENERAL TEST CONDITION
Output Load 3 ohm non-reactive
Reference Output : 250 mW
Input Signal Source : IRE LOOP for AM
75 ohm dummy for FM
Modulation : 30% 400 Hz for AM
22.5 KHz Deviation 1 KHz for FM
75KHz Modulation for FM MPX
Remarks DC : 12V
AC : 120V 60Hz
* * * Subject to change without notice .
Prepared by Approved by
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PERFORMANCE SPECIFICATIONS
MODEL NO : PC-X270
Amplitude Modulation ( AM ) Section
Test Item Unit Nominal Limit #1 #2
A.01 Tuning Range LOW KHz 520 +/-5
HIGH KHz 1710 +/-5
A.02 I.F. Frquency 600KHz KHz 450 +/-5
A.03 Sensitivity (AM Loop ANT.) (LOW TP) 600KHz dB/m 58 68
S/N 20dB (MID TP) 1000KHz dB/m 58 66
(HIGH TP) 1400KHz dB/m 58 66
A.04 Image Rejection 1000KHz dB
1400KHz dB 37 30
A.05 S/N Ratio at 100dB/m Input 600KHz dB 35 30
1000KHz dB 35 30
1400KHz dB 35 30
A.06 I.F. Rejection
(MW)600KHz dB 48 40
A.07 AM Whistle Modulation
910/1350KHz %--¡Ø15
A.08 Selectivity (+/-10KHz) (ACA) 600KHz dB
1000KHz dB
A.09 AGC Figure of Merit (126dB) 1000KHz dB 40 35
A.10 Audio Response -6dB (AM:1000KHz) LOW Hz 70 125
HIGH KHz 2K5 2K
A.11 Distortion 30% at Ref. 1000KHz % 1 3
60% at Ref. 1000KHz % 5 10
A.12 Modulation Hum (AC) 1000KHz dB 50 40
A.13 Overload (M=80% THD=10%) 1000KHz mV/m >100
A.14 Min. Volume Hum and Noise mV 0.7 1.2
A.15
10% THD Power(Mod:80%)(1-CH Load Only)( AC ) W¡Ù5
A.16 Max. Vol. Audio Power Output (80% Mod) 1000KHz W
A.17 6dB Bandwidth at 20dB S/N 1000KHz KHz 4 +/-3
A.18 Auto Search Threshold 600KHz dB/m 60 68
1000KHz dB/m 60 66
1400KHz dB/m 60 66
A.19 OSC Dropout Voltage Max. Power (DC) 1000KHz V 8.4 10.8
Fial Out Valtage (AC) 1000KHz %¡Ù70
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