Sansui G-4700 - Page 5

@® NEW MEASUREMENT FOR FM.
Input signal level under the provision of |HFM-T-200, a new meas-
urement method is indicated by available power ratio ‘dBf”’ To
obtain approximate available power ratio ‘‘dBf”’, abstract 0.8 from
attenuater indication of general FMSG (open load indication type);
however, the former measurement, IHFM-T-100 is designated to-
gether too.
The way of modulation of IHFM-T-200 is shown below.
modulation modulation modulation
frequency mode factor
FmMono | tooone |
FM STEREO 1000 Hz
@ The relation between the standard input 65 dBf of IHFM-T-200
and the former indication ‘‘dB” is shown below.
Pilot + SUB
100%
FM SSG 65.8dB ANT Input 59.8dB
Equipment
4. THREADING OF DIAL CORD
elf a dial cord is cut off or slips, replace it by following pro-
cedures. As this unit uses 0.5 mm@ cord, please replace it with
Be Mos ey em org a Cr ee a A ot sae Ba $4
eT’ edge he ad eee EES ae as
oe ew. ee ee a a Oe ker mere oe ae)
@ The length of dial cord is approximately 160 cm (65.3 inch).
@)
SQ
88 vt
peedbeee bee al
530
& START POINT
AM FM Generator Oscilloscope .......... Genescope
Audio Oscillator 2.2.0.0... eee ee eee Audio Osc.
Distortion Meter 2.0... ee ee es Dist. Meter
AM Standard Signal Generator ........... AM SSG Others
FM Standard Signal Generator ........... FM SSG AMteNNa os canes See 8 eRe ee ANT.
FM Stereo Generator ................ StereoSG Modulation... . 2.0... eee eee MOD.
Oscilloscopes esai6 & Kee es ce OS HE ee ER Scope _ Total Harmonic Distortion .........0.2.6. T.H.D.
® Selection of Intermediate Frequencies (FM) (Refer to
Fig. 3-3 parts location F-3000 on page 3) 7
The digital locking point differs with the frequency rank of the ce
ramic filter used in the F-3062. When the central frequency (shown
by a color) of the ceramic filter is changed, the following connec-
tion must be made by using jumper wires:
@ Unify the color marks of the FM ceramic filters (CF01 ~ CFO2)
on the F-3062 with the same color.
e Select the joints A,B, and C of F-3000 according to color marks
as shown in the following table:
Connecting Position o Connecting Position of
Colne Intermediate Jumper wire on F-3000 Diode on F-3000
ing frequency i
os
io6eNr
Orange 10.72MHz
10.74MHz
10.76MHz
Blue 10.68MHz
Red 10.70MHz
1. Threading of Dial Cord
Thread the dial cord in numerical order from (1) to () as Fig. 1.
@ Open the variable capacitor completely.
* Dial Cord (0.5 mm@¢) Stock No. 6036051