Accuphase T-110CS (1995)

A CS-PCM digital satellite tuner released by Accuphase in November 1995, with 18-bit digital processing.

Overview

The Accuphase T-110CS is a CS-PCM tuner for digital satellite audio. It came out in November 1995. It takes JCSAT and AUX band signals with a converter frequency of 11.2 GHz. Outputs are both optical and coaxial digital, plus balanced and unbalanced analog. The RC-16 remote commander comes with it. The remote uses an infrared pulse control system and runs on two AAA batteries.

Specifications

Type	CS-PCM tuner
Antenna input structure	High-frequency coaxial C15 type receptacle (F-type connector)
Reception Range (Converter Frequency : 11.2 GHz)	JCSAT : J1-J15 AUX : 1300 MHz to 1770 MHz
Bit stream output signal level	BIT STREAM : 0.5Vp-p/75 Ω
Sampling frequency	A-mode : 32 kHz B mode : 48 kHz
Quantization	A mode : 14/10-bit quasi-instantaneous companding B-mode : 16-bit straight line
Audio output switching	A mode : SOUND 1/2 DUAL sound : MAIN/SUB/MAIN + SUB
Digital output format level (EIAJ, CP-1201)	Formatting : Digital Audio Interface Optical : -21dBm to -15dBm Coaxial : 0.5Vp-p/75 Ω
Frequency characteristic	A-mode : 4.0 Hz ~ 15 kHz ± 0.5 dB B mode : 4.0 Hz to 22 kHz ± 0.5 dB
D/A converter	4 MMB, 18 bit
Digital filter	18 bit, 8 x Oversampling
Total harmonic distortion factor + noise	0.0025% (1kHz)
Signal-to-noise ratio	115dB
Channel separation	90dB
Analog output voltage / impedance	Balanced : 2.0V/50 Ω (Balanced XLR type) Unbalanced : 2.0V/50 ohm (RCA phono jack)
Power	100 VAC, 50Hz/60Hz
Power consumption	29W
Maximum external dimensions	Width 475 x Height 140 x Depth 391 mm
Weight	9.5kg
Attachment	Remote Commander RC-16
Remote control system	Infrared pulse system
Remote power	DC3V Dry battery Uses 2 AAA (SUM-3/R6)
Remote maximum external dimensions	Width 44.5 x Height 136 x Depth 18 mm
Remote weight	110g (including battery)

Design

The T-110CS uses four 18-bit MMB (Multiple Multi-Bit) D/A converters in parallel, followed by an 18-bit, 8x oversampling digital filter. Signal processing is handled by VITABI and PCM composite LSI chips. A Core Tech type scramble decoder is built in. The analog outputs are fully balanced XLR and unbalanced RCA, and the balanced circuit floats from ground. The two digital outputs are Toslink optical and coaxial RCA. There is an antenna adjustment switch and an antenna input level display. The active filter is a third-order Butterworth GIC (Generalized Immittance Converter).

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Service Manuals, Schematics & Catalogs

Catalog (1991) — archive.org
Catalog (1992) — archive.org