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OPERATIONS MANUAL
FOR
BC623, BN623, BN723
2 x Analog Audio,
RS232, RS422, RS485, GPI
Fibre
© 2015-2016 Bluebell Opticom Ltd
Unit 2, The Quadrant, Howarth Road, Maidenhead, Berkshire, SL6 1AP, United Kingdom
Tel: +44 (0)1628 510055 Fax: +44 (0)1628 510057
Email: sales@bluebell.tv Website: www.bluebell.tv
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Summary of Contents for Bluebell BC623
- Page 1 BC623, BN623, BN723 2 x Analog Audio, RS232, RS422, RS485, GPI Fibre © 2015-2016 Bluebell Opticom Ltd Unit 2, The Quadrant, Howarth Road, Maidenhead, Berkshire, SL6 1AP, United Kingdom Tel: +44 (0)1628 510055 Fax: +44 (0)1628 510057 Email: sales@bluebell.tv Website: www.bluebell.tv...
- Page 2 � � � • Bluebell Opticom Ltd provides warranty coverage as detailed in our general terms • and conditions. Please note that warranty support is only valid if product serial numbers remain intact and legible. Tampering with or removing serial numbers may void your warranty.
- Page 3 Dissemination to a third party or parties will constitute breach of copyright. Information in this document is subject to change without notice and does not represent a commitment on the part of Bluebell Opticom Ltd. E&OE January 2015, November 2016...
- Page 4 Bi-directional control data and GPI signals are provided over 2 fibres. Two bi-directional analogue audio signals can also be sent over the same pair of fibres. The BC623 family is ideally suited to linking audio intercom panels remotely over fibre. The electrical inputs are:...
- Page 5 BC623 BN623 Rack mounted unit Stand-alone box connections connections Power i/p "S/L" LED Optical link "S/L" LED RS232/422/GPI/Audio connector Notes: "S/L" LED green = Unit is successfully locking to its fibre-optic input signal. "S/L" LED red = Unit is not locked to a fibre-optic input signal.
- Page 6 2 x Balanced Analog audio signals Output impedance 100 ohm Latency (In -> BC623 -> fibre -> BC623 -> Out) < 2 uS Optical Input/output Specs determined by SFP fitted. Some typical values are given here Connector 2 x female LC...
- Page 7 Data Signals Connector 44 way High Density D sub-connector Max data rate RS232 250 kb/s Max data rate RS422/485 10 Mb/s Number of Inputs 2 x RS232 level Inputs 2 x RS422/RS485 level differential Inputs 2 x GPI (through 100R resistors to 74LVC inputs) GPI Input voltage low -0.5V to +0.8V GPI Input voltage high...
- Page 8 Supply ground Pin 2 Pin 3 Pin 3 Pin 2 Pin 4 DC in BC623 / BN623 / BN723 Data and Audio Connections Female 44 pin “D” type socket Pin 1 Pin 15 Pin 30 Pin 16 Pin 44 Pin 31...
- Page 9 For an RS422-only system, follow the diagram below. For RS485 without termination systems, follow the diagram below (typically used for very short distance transmitting or multi-drop RS485 systems). Join Pin 2 and Pin 5 for RS485 negative input 1 (RS485_A-) Join Pin17 and Pin20 for RS485 positive input 1 (RS485_A+) Join Pin 3 and Pin 6 for RS485 negative input 2 (RS485_B-) Join Pin19 and Pin22 for RS485 positive input 2 (RS485_B+)
- Page 10 Link pins 1 to 2 for RS485 (Default). BN623/723: J2 Link pins 2 to 3 for RS422 The I2C EEPROM write enable (Factory use only) (BC623 only) BC623: J7 Link pins 1 to 2 to disable writes to eeprom (Default).
- Page 11 = Unit is successfully locking to its fibre-optic input signal. = Unit is not locked to a fibre-optic input signal. External monitoring (BC623 only) When fitted in a BC100 or BC160 frame, the BC623 reports its status as follows. BC100/BC160 Frame Panel LEDs: Ch A: green = SFP is detecting light at its input.
- Page 12 SFPs fitted to these modules must have the following characteristics: • The SFP must be a transceiver. • SFPs can be either MSA or non-MSA pinout. On the BC623, the card’s jumper links must be set accordingly (see ‘Configuration’ section) A list of categorized SFPs can be found at: http://bluebellcomms.co.uk/sfps/...
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