The Dolby DM100 is a portable, handheld diagnostic tool that can monitor and generate Dolby Digital, Dolby E, and PCM bitstreams.
The DM100 Dolby® Bitstream Analyzer is a uniquely efficient tool for end-to-end system testing. With its built-in test-signal generator, the DM100 allows audio system integrators and service engineers to quickly monitor and check the integrity and composition of Dolby Digital, Dolby E, and PCM signals routed through production, broadcast, cable, and satellite facilities, or even a home theater system.
The DM100 accepts digital input signals via XLR, BNC, and Toslink™ optical connectors. The unit identifies the format of the input signal—Dolby Digital, Dolby E, or PCM—and activates the appropriate built-in decoder. A standard 1/8-inch stereo headphone jack can be switched to monitor any two decoded channels or a downmix of the whole program, while a small built-in speaker provides a mono output.
A preselected set of useful Dolby Digital and Dolby E test bitstreams is stored in internal nonvolatile RAM, and users can change the set in the field via software download from the included CD-ROM. The DM100 can generate the selected bitstream simultaneously on all the output connectors, even while receiving and decoding an input signal. The DM100 is also capable of generating two-channel PCM signals. In this mode, the user can select the output waveform type (white noise, pink noise, sine, square), amplitude, and frequency. A serial port allows software upgrades and error and status logging via a Windows®-based PC.
A pass-through mode permits modification of the input signal’s AES channel status bits before passing the signal to the output connectors. The input signal can still be monitored at the same time. Monitoring capabilities include error detection at the AES3 layer and within the coded audio layers (that is, for Dolby Digital and Dolby E bitstreams), including SMPTE 337 formatting information.
The DM100 is powered by four AA batteries or by an included wall-mounted DC power supply, and it ships with a soft carrying case.
ENLARGE 
DM100 Front Panel
Display and Controls
Two-line, 16-character LCD with control keys for status indication and setup operations
Status LEDs
Indicate critical bitstream and system information
RS-232 Serial Input/Output Port
8-pin female mini-DIN connector for software upgrades and logging functions
Volume Control
Headphone and speaker level
DM100 Top Panel
Digital Audio Inputs
AES/EBU 110Ω via XLR female connector
BNC female connector, unbalanced, 75Ω, signal levels per AES-3ID-1995 (SMPTE 276M)
Fiber-optic via Toslink connector
One input active at any time
Digital Audio Outputs
AES/EBU 110Ω via XLR male connector
BNC female connector, unbalanced, 75Ω, signal levels per AES-3ID-1995 (SMPTE 276M)
Fiber-optic via Toslink connector
DM100 Side Panels
Video Reference Input
ANTSC/PAL program or black; signal level per SMPTE RP 154-1994; RCA female connector
Headphone Output
+11.5 dBu max into 600Ω, adjustable level
1/8-inch standard headphone jack
Audio Sampling Rates
32, 44.1, and 48 kHz for Dolby Digital and PCM 48 kHz for Dolby E
Video Frame Rates
29.97 or 25 fps
Frequency Response
Digital outputs: 20 Hz to 20 kHz, ±0.25 dB
Distortion
<0.01% at 1 kHz
<0.02%, 20 Hz to 20 kHz
Dynamic Range
>100 dB
Output Word Length
Up to 24 bits
Case
ABS plastic handheld enclosure
Power Requirements
External 6 VDC, 400 mA power adapter (included), or four AA batteries
Dimensions and Weight
100 × 200 × 41 mm (4 × 7.9 × 1.6 inches)
Net: 0.68 kg (1.5 lb)
Environmental Conditions
Operating: 0°C–50°C (32°F–122°F), natural convection cooling 0%–98% relative humidity (noncondensing)
Nonoperating: 20°C to 70°C (−4°F to 158°F) Supplied Accessories Owner’s manual Warranty card Carrying case DC power adapter RCA-to-BNC and BNC-to-RCA adapters CD-ROM of Dolby Digital and Dolby E test bitstreams
Regulatory Notices
North America: This unit complies with the limits for a Class A digital device pursuant to Part 15 of the FCC rules and Industry Canada ICES-003 Class A requirements. The 110 V power transformer is UL Listed.
Europe: This unit is designed to comply with the requirements of EMC Directive 89/336/EEC and carries the CE marking accordingly.
DM100
Specifications Sheets
Product Manuals
Quick Start Guide
Technical Papers
Other
MSRP: $2,200
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