Specifications

P a g e | 33
SAM1-3GM and SAM1 MADI Combined User Handbook Version One Issue 1
7.0 Installed HDC-2T Audio Monitor Module Specification (including ‘add on’ expansion
board).
Overview
This specification describes the HDC-2T Audio Monitor Module.
This module has been designed to monitor a combination of analogue audio, AES3 digital audio
and AES or Dolby E digital audio embedded in SMPTE 259M or SMPTE 292M video data streams,
together with the video content which is output as composite and/or SDI. HD formats are passed
through a simple down-conversion process to the monitoring output.
Mechanical
PCB: 4 layer, 120mm x 376mm with integral BNC and XLR connectors
Component Height: <30mm above pcb surface, <2mm below
<65mm above pcb surface with Dolby E fitted
Power
The module assumes the supply of regulated power will be made available via the power input
connector. Poorly regulated or noisy supply rails may affect the quality of the analogue outputs.
The HDC-2T will accept two feeds of +12V to +24V DC power, approximately 60W typical when
using loudspeaker outputs. This allows dual redundant or external battery operation.
Inputs
HD/SDI
Connector Type: BNC
Receiver type: AC coupled, auto equalising with clock regeneration
Impedance: 75, return loss ≥15dB to 1.5GHz
Standards: SMPTE 259M-C with embedded 48kHz audio per SMPTE 272M-A
SMPTE 292M with embedded 48kHz audio per SMPTE 299M
Performance: ≥300m of high quality cable at 270Mbit (eg Belden 1694)
≥100m of high quality cable at 1.5Gbit
AES 3 or AES 3id
Connector type: Inputs 1 & 2, XLR 3 pin. (can be wired for unbalanced BNC input)
Inputs 1, 2, 3 & 4. 25way D-type 4 stereo pairs, pin-out as per Yamaha
Impedance: 75 unbalanced or 110 balanced. Impedance is switch selected via DIP
Switch 2. To obtain an unbalanced connection one line of the input needs to be grounded at an
electrically convenient point.
Input Sensitivity: < 200mV p-p per AES3.
Standards: AES3-1992 at 96 kHz, 48kHz, 44.1kHz or 32kHz
Analogue Inputs
Connector type: 4 x XLR 3 pin, (Two stereo pairs)
Board header Further 4 stereo pairs (8 channels)
Remote control
Connector type: Header, 10way to connect to 9pin D-type (RS422)
Outputs
Video
Connector Type: BNC
Output 1 Equalised active loop-through
Impedance: 75
Amplitude: 800mV p-p ±10%
Output 2 Composite SD (Downconverted when input is HD not available on SAM1
3GM)
Format: PAL or NTSC according to standard on SDI input
Impedance: 75
Amplitude: 1V p-p ±5%
Output 3 - Optional SDI version of image on composite output
Impedance: 75 