Download Print this page
Rotel RT-955 Technical Manual

Rotel RT-955 Technical Manual

Am/fm stereo tuner
Hide thumbs Also See for RT-955:

Advertisement

Quick Links

T echnical
Manual
Table of Contents
Specification......................................1
Parts List ...........................................2~5
Adjustment........................................6~12
PCB Assembly ..................................13~15
Schematic Diagram ..........................16~22
Specification
FM Tuner
Usable Sensitivity:
50dB Quieting Sensitivity:
Signal to Noise Ratio (at 65 dBf):
Harmonic Distortion (at 65 dBf):
Frequency Response:
Capture Ratio:
Alternate Channel Selectivity:
Spurious Response Ratio:
Image Rejection Ratio:
IF Rejection Ratio:
AM Suppression Ratio:
Stereo Separation (100Hz/1 KHz/10 KHz):
Output level:
Antenna Input:
AM Tuner
Usable Sensitivity:
Selectivity:
Harmonic Distortion :
Image Rejection Ratio:
Signal to Noise Ratio:
Output level:
Antenna Input:
General
Power Consumption:
Power Requirements (AC):
Weight:
Dimensions (W x H x D):
SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU,
TOKYO 150-0045, JAPAN
Quality Uncompromised
®
AM/FM STEREO TUNER
RT-955
12.2 dBf
20.2 dBf (mono)
45.3 dBf (stereo)
75 dBf (mono)
72 dBf (stereo)
0.2 % (mono)
0.3 % (stereo)
10 Hz - 15 kHz, ± 3 dB
2.0 dB
47 dB (± 400 KHz)
90 dB
80 dB
80 dB
55 dB
40 dB/45 dB/35 dB
1.2V
75 ohms unbalanced
300 μV/m
25 dB
0.5 %
45 dB
48 dB
165 mV
Loop Antenna
10 Watts
120 volts, 60 Hz (USA version)
230 volts, 50 Hz (European version)
3.7 kg/8.2 lb.
440 x 72 x 286 mm
17
x 2
x 11
3/8"
7/8"
1/4"
Serial. NO.
Beginning
Y-329A-00065C/S-S

Advertisement

loading
Need help?

Need help?

Do you have a question about the RT-955 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Summary of Contents for Rotel RT-955

  • Page 1 Quality Uncompromised ® T echnical AM/FM STEREO TUNER RT-955 Manual Table of Contents Specification........1 Parts List ...........2~5 Adjustment........6~12 PCB Assembly ........13~15 Schematic Diagram ......16~22 Specification FM Tuner Usable Sensitivity: 12.2 dBf 50dB Quieting Sensitivity: 20.2 dBf (mono) 45.3 dBf (stereo)
  • Page 2: Parts List

    Parts List-1 SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION X-1273-01 PCB ASSEMBLY ANT200 ANTENNA TERMINAL 1P ANTENNA-A C304 0.047UF CERAMIC CAPACITOR ANT201 ANTENNA TERMINAL 3P ANTENNA-B C306-308 0.022UF CERAMIC CAPACITOR C201.202 0.01UF CERAMIC CAPACITOR C309 220PF CERAMIC CAPACITOR C203 0.022UF CERAMIC CAPACITOR C311.312...
  • Page 3 Parts List-2 SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION CF201.202 FM FILTER 10.7MM-A FM IF CERAMIC FILTER Q503 KTC3198Y TRANSISTOR CF203 FM FILTER 10.7MJA10-A FM IF CERAMIC FILTER Q504 DTC114Y TRANSISTOR CF204 FM FILTER 10.7MM-A FM IF CERAMIC FILTER Q505 DTA114Y TRANSISTOR...
  • Page 4 Parts List-3 SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION R288 5.6K RESISTOR 5% RL203 8.2K RESISTOR 5% R289 RESISTOR 5% RL204 470R RESISTOR 5% R291.292 100K RESISTOR 5% RL205 100K RESISTOR 5% R297 4.7K RESISTOR 5% RL206 3.3K RESISTOR 5% R298 RESISTOR 5% RL294...
  • Page 5 Parts List-4 SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION X-1273-06 PCB ASSEMBLY R152 RESISTOR 5% C601-605 1UF/50V ELECTRIC CAPACITOR R155.156 RESISTOR 5% D601-604 ZENER 12V ZENER DIODE R157 RESISTOR 5% IC601 MAX232CPE RS232 DRIVER IC R158-163 RESISTOR 5% JACK3 DB9 JACK(MALE) DB9 JACK R164...
  • Page 6: Mode : Mono

    Adjustment ■ FM * Necessary measurement equipment RDS/STEREO Multiplexer 1 unit FM/AM Signal Generator 1 unit Audio Signal Analyzer 1 unit Oscilloscope 1 unit Digital Volt Meter (DVM) 1 unit (A) Center adjust ❏ RDS/STEREO Multiplexer Setting – MODE : MONO –...
  • Page 7 (B) Channel Separation adjust ❏ RDS/STEREO Multiplexer Setting – MODE : STEREO (ONLY L-CH Signal OUT) – Audio Frequency : 1KHz ❏ FM Signal Generator Setting – Deviation : 75KHz – Radio Frequency : 98.0MHz – Output Level : 66dB ❏...
  • Page 8 (C) TUNED Level adjust ❏ RDS/STEREO Multiplexer Setting – MODE : STEREO – Audio Frequency : 1KHz ❏ FM Signal Generator Setting – Deviation : 75KHz – Radio Frequency : 98.0MHz – Output Level : 26dB ❏ RT955 Setting – FM Frequency : 98.0MHz –...
  • Page 9 (D) RDS Level adjust ❏ RDS/STEREO Multiplexer Setting – MODE : STEREO – Audio Frequency : 1KHz – RDS MODE : ON ❏ FM Signal Generator Setting – Deviation : 75KHz – Radio Frequency : 98.0MHz – Output Level : 35dB ❏...
  • Page 10 FFE 200 (or Chassis) FRONT q Adjust AM Frequency of RT-955 to 522KHz. w Connect (-) terminal of DVM with GND (or chassis) and connect (+) terminal with Jumper J288 (VT CHECK ) and measure voltage. (Low Freq. VT) e Adjust VT to 1.1V with TL301 (AM-OSC Coil).
  • Page 11 (B) Output Level adjust ❏ AM Signal Generator Setting – Modulation : 30% – Audio Frequency : 400Hz – Radio Frequency : 603KHz / 1404KHz / 999KHz – Output Level : 84dB ❏ RT955 Setting – AM Frequency : 603KHz Oscilloscope L-CH Audio...
  • Page 12 (C) TUNED Level adjust – Audio Frequency : 1KHz ❏ AM Signal Generator Setting – Modulation : 30% – Audio Frequency : 400Hz – Radio Frequency : 999KHz – Output Level : 84dB ❏ RT955 Setting – AM Frequency : 999KHz Oscilloscope L-CH Audio...