Summary of Contents for ADPRO VM22A
- Page 1 $'352 Š VM22A Audio Switcher installation user manual EXbX^] BhbcT\b Part No.: 200791.06...
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Page 2: Declaration Of Conformity
Supplementary Information The products listed comply with the requirements of the Low Voltage Directive 73/23/EEC (where applicable) and the EMC Directive 89/336/EEC and carries the CE marking accordingly. The products were tested in a typical configuration. ADPRO VM22A, Issue 6... -
Page 3: Table Of Contents
Summary of Limitation of Liability for Vision Fire & Security Introduction Installation Typical VM22A Application Unpacking the VM22A VM22A Links VM22A Switches VM22A Connections Installation Procedure Manual Volume Setup Cascading Multiple VM22A Units Using an External Amplifier Specifications BCD Codes (Fast Scan Operation) Serial Protocol ADPRO VM22A, Issue 6... -
Page 4: Warranty
This warranty is only available on component parts of the ADPRO Product while the ADPRO Product is less than 7 (seven) years old commencing on the start of the Warranty Period and only covers those component parts of ADPRO Product serviced, repaired or replaced. -
Page 5: Lightning Or Related Voltage Surges
ADPRO Product and have made your own independent assessment of the fitness or suitability of the ADPRO Product for your purpose. You acknowledge that you have not relied on any oral or written information, representation or advice given by or on behalf of Vision Fire &... -
Page 6: Introduction
Transmission System. Unless annotated otherwise, all references to ADPRO FastVu also refer to Fast Scan. Each VM22A can switch audio from the FastVu audio output to one of 10 loudspeakers, and one of 10 microphones attached to the VM22A to the FastVu audio input. -
Page 7: Installation
FastVu. VM22A units may be cascaded to provide up to 20 channels of audio switching (100 channels for Fast Scan). Fast Scan Receiver/Transmitters must be Series III fitted with software version 2.03 or later. The VM22A may be set to operate as an ADPRO VM22 for connection to all Fast Scan units prior to Series III with version 2.03 software, and provides all the... -
Page 8: Unpacking The Vm22A
At the Transmitter, the VM22A link settings would typically be set to either switch bi-directional audio to the currently displayed video camera or to broadcast or listen in to a site irrespective of the camera being viewed. At the Fast Scan Receiver, the VM22A would normally be set to broadcast and listen in to a site. -
Page 9: Vm22A Links
VM22A Links There are a number of switches and links to configure the VM22A depending on the application. The switches are accessible from the front panel. To alter the link positions, remove the two screws from the lid and raise the lid to expose the circuit board shown in Figure 3. -
Page 10: Vm22A Switches
When Switch 1 is in the OFF position, individual channel input levels are set via individual volume potentiometers located on the front panel of the VM22A. Manual setting of an input level can be made in conjunction with the two LED indicators on the front panel: •... - Page 11 Switch 2 configures the VM22A to receive audio inputs at MICROPHONE levels between 0.1mV rms and 10mV rms. SW2=OFF - Line Inputs When Switch 2 is in the OFF position, the VM22A inputs are set to receive LINE levels between 10mV rms and 400mV rms. SW3=ON – Broadcast In Switch 3 configures the VM22A to operate in the Broadcast IN mode.
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Page 12: Vm22A Connections
VM22A Connections Figure 2 shows the location of controls and connectors on the front and rear panel of the VM22A Audio Switcher. The following tables show the connection details for the Expansion I/O ports and Auxiliary I/O respectively. FUNCTION EXPANSION I/O PORT... -
Page 13: Installation Procedure
Generally at the Fast Scan Receiver end of the system, one microphone and one speaker are connected to the VM22A Audio Switcher (refer to Figures 6 and 7). By referring to Section 5.4 and Figure 2, set the front panel switches as follows: •... - Page 14 Figure 4 – VM22A connections ADPRO VM22A, Issue 6...
- Page 15 At the FastVu or Fast Scan Transmitter At the Transmitter, the VM22A can be set for a number of configurations to: • Switch (bi-directional) audio to the speaker/microphone associated with the (currently displayed) camera, or • Listen to a single microphone irrespective of the camera being viewed or •...
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Page 16: Manual Volume Setup
While one person speaks into the microphone at the Receiver, adjust the respective output level potentiometer for the particular channel on the VM22A at the transmitter end to a suitable level. Repeat for all the Transmitter speakers. Repeat the above with audio enabled from the Transmitter to the Receiver, substituting the output level potentiometers for the input level potentiometers. -
Page 17: Cascading Multiple Vm22A Units
Cascading Multiple VM22A Units Figures 6 and 7 show how up to ten (10) VM22A units can be cascaded to control up to 100 channels of audio inputs and outputs at Fast Scan Transmitters. Figure 6 – Multiple VM22A connection with internal speaker amplifier... - Page 18 Selection of the ‘Chassis Number’ of individual VM22A units is via the address switch located on the front panel. The address assigned to a VM22A will determine which (ten-channel) block the unit controls. The following table shows the address allocations.
- Page 19 71-80 81-90 91-100 To cascade multiple VM22A units, a daisychain cable is required between each unit, connected from the ‘Expansion Loop I/O’ connector on the first unit to the ‘Expansion I/O’ connector on the following unit (refer to Figure 8).
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Page 20: Using An External Amplifier
4 Watts into an 8 ohm load. The output of the external amplifier is routed to the VM22A internal output switcher to select one of 10 loudspeakers. When cascaded (refer to Section 5.8), only one VM22A can be active at any one time. For connection details when cascading multiple VM22A Audio Switchers and using an external amplifier, refer to Figure 7. - Page 21 The VM22A contains a 10 channel balanced input/ balanced output switcher that can switch the output of the internal speaker amplifier or external power amplifier as required. The VM22A is capable of switching up to 4 Watts (rms) into an 8 ohm load. NOTE The output switcher has a current limit of 700mA (rms) maximum.
- Page 22 The VM22A must only be powered from one of the AC Power Adaptor(s) supplied with it. For markets where the VM22A is not supplied with a suitable AC Power Adaptor, a Safety Extra Low Voltage (SELV), Limited Power Source (LPS) rated AC adaptor meeting the requirements of IEC 60950 (or the local equivalent) with a regulated 12 V, 0.5 A output rating may be used.
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Page 23: Bcd Codes (Fast Scan Operation)
BCD Codes (Fast Scan Operation) The four BCD address lines on the Expansion I/O Interface are used to select the active channel on the VM22A when VM22 mode is selected. The following table shows the BCD code and the corresponding channel allocation. -
Page 24: Serial Protocol
Serial Protocol In VM22A mode, channel selection is achieved using a serial protocol via the BCD signal lines. Figure 10 shows the serial protocol timing diagram, and Table 4 shows the relationship of the serial signals to the BCD lines. - Page 25 Europe & the Middle East Vision Fire & Security Vision House, Focus 31 Mark Road Hemel Hempstead Herts HP2 7BW UK Telephone +44 (0) 1442 242 330 Facsimile +44 (0) 1442 249 327 Web Site http://www.adpro.com.au ADPRO VM22A, Issue 6...
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