VISION AV-1900 Mixer Amplifier User Manual

: June 30, 2024
: VISION

Table of Contents

VISION AV-1900 Mixer Amplifier
Product Information
Product Usage Instructions
Description
- Front panel
- 3 Input 1
- 4 Input 2
- 5 Input 3
- 6 Input 4
- Outputs
8 RS-232 codes
AUTO_WAKEUP
BT_STATUS
Declaration of conformity
Frequently Asked Questions (FAQ)
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

VISION AV-1900 Mixer Amplifier

VISION-AV-1900-Mixer-Amplifier-PRODUCT-removebg-
preview

Product Information

Specifications

Model : AV-1900
Languages : EN, DA, DE, ES, FR, IT, NL, PL, PT
Input : 4 Auxiliary input minijack
Outputs : 2-Phono/RCA line-level output
Control : RS-232 codes with Baud rate: 9600K

Product Usage Instructions

Front Panel Overview: The front panel of the AV-1900 includes various inputs and controls that allow you to manage audio sources and settings.
Input Selection : The AV-1900 offers multiple input options including Mic, Line, and Bluetooth inputs. Use the input selector to choose the desired input source.
Volume Control : Adjust the master volume control to set the overall audio output level. Press the control for power on/off functionality.
Bluetooth Connectivity : Pair your Bluetooth device by holding the Bluetooth indicator button. Once paired, the Bluetooth indicator will stay on.
Output Management : The AV-1900 provides line-level and loudspeaker outputs. Use the front panel controls to make post-mix adjustments for the line-level output.
RS-232 Control : To control the device via RS-232, follow the specified baud rate and command format. Use ASCII commands for functions like volume adjustment and standby control.

Description

Front panel

$VISION-AV-1900-Mixer-Amplifier-FIG- $1$$

Input 4 Auxiliary input minijack. Plugging in here will disconnect input 4 on rear.
Tone control
Input 1 – Mic or Line
Input 2 – Mic or Line
Input 3 – Mic or Bluetooth [Push: hold for 3 seconds to unpair BT device]
Input 4 – Mic or Line
Master volume [Push: Power on/Off]
Power indicator
Bluetooth indicator –
- Flashing: pairing mode / On : paired

WHEN POWERED ON: By default previous levels will resume. This can be overridden with fixed preset levels via RS-232.

Input selector

$VISION-AV-1900-Mixer-Amplifier-FIG- $2$$

3 Input 1

$VISION-AV-1900-Mixer-Amplifier-FIG- $3$$

4 Input 2

$VISION-AV-1900-Mixer-Amplifier-FIG- $4$$

5 Input 3

$VISION-AV-1900-Mixer-Amplifier-FIG- $5$$

6 Input 4

$VISION-AV-1900-Mixer-Amplifier-FIG- $6$$

BT Notes

To disable set switch to left or centre positions
AV-1900 has one BT memory slot. It will pair with the most recently paired device without requiring PIN.
Resetting BT by holding down Input 3 dial will delete memory slot to allow new device to connect
Only one device can pair at the same time

Outputs

$VISION-AV-1900-Mixer-Amplifier-FIG- $7$$

8 RS-232 codes

Baud rate : 9600K, Stop Bit : 1, Delivery interval >80ms, No check digit. ASCII Command format : 97 45 45

ASCII Code	Name	Function	Remarks	Return codes

97 45 45

|

ON

|

Turn on/ bring out of standby

INPUT1 Volume XX=00-14

|

97 31 31 XX

INPUT2 Volume XX=00-14

|

97 32 32 XX

INPUT3 Volume XX=00-14

|

97 33 33 XX

INPUT4 Volume XX=00-14

|

97 34 34 XX

Treble Gain XX=00-0E

|

97 25 25 XX

Master Bass XX=00-0E

|

97 24 24 XX

97 16 16| BASS-| Decrease bass gain by-1DB
| | | | 97 23 23 0A
| | | 97 25 25 07
| | | 97 24 24 07
97 4A 4A| RESET| Reset all| 97 31 31 0A
| | | 97 32 32 0A
| | | 97 33 33 0A
| | | 97 34 34 0A
ASCII Code| Name| Function| Remarks| Return codes
---|---|---|---|---

97 4B 4B

|

MAXVOL

|

Max Volume

| | 97 23 23 0A

97 25 25 07

97 24 24 07

97 31 31 0A

97 32 32 0A

97 33 33 0A

97 34 34 0A

97 40 40| VOL+| Volume +/ out of mute|

Master Volume XX=00-14

|

97 23 23 XX

Direct Address Volume Codes

ASCII Code	Function	Remarks	Return codes
97 AX AX	X =0-F Set master volume to 0-15	****

xx =01-14

| ****

97 23 23 xx

xx =01-14

| ****

97 31 31 xx

97 FX FX| X =0-4 Set INPUT1 volume to 16-20
97 5X 5X| X =0-F Set INPUT2 volume to 0-15| ****

xx =01-14

| ****

97 32 32 xx

97 0X 0X| X =0-4 Set INPUT2 volume to 16-20
97 6X 6X| X =0-F Set INPUT3 volume to 0-15| ****

xx =01-14

| ****

97 33 33 xx

97 7X 7X| X =0-4 Set INPUT3 volume to 16-20
97 8X 8X| X =0-F Set INPUT4 volume to 0-15| ****

xx =01-14

| ****

97 34 34 xx

97 9X 9X| X =0-4 Set INPUT4 volume to 16-20
96 AX AX| X =0-F Initial set master volume to 0-15| ****

xx =01-14

| ****

96 23 23 xx

96 BX BX| X =0-4 Initial set master volume to 16-20
96 EX EX| X =0-F Initial set INPUT1volume to 0-15| ****

xx =01-14

| ****

96 31 31 xx

96 FX FX| X =0-4 Initial set INPUT1volume to 16-20
96 5X 5X| X =0-F Initial set INPUT2volume to 0-15| ****

xx =01-14

| ****

96 32 32 xx

96 0X 0X| X =0-4 Initial set INPUT2volume to 16-20
96 6X 6X| X =0-F Initial set INPUT3volume to 0-15| ****

xx =01-14

| ****

96 33 33 xx

96 7X 7X| X =0-4 Initial set INPUT3volume to 16-20
96 8X 8X| X =0-F Initial set INPUT4volume to 0-15| ****

xx =01-14

| ****

96 33 33 xx

96 9X 9X| X =0-4 Initial set INPUT4volume to 16-20

Return Codes

Response from Unit = 97 0X/XX 0A
All responses end in \x0A or LineFeed
Sample commands and responses
Power Query – Command – \x97\x20\x20
- Power Query – Response – STANDBY : 97 20 20 01\x0A = On/No Faults
- Power Query – Response – STANDBY: 97 20 20 00\x0A = Off/Standby

ASCII Code	Name	Function	Remarks	Return codes

97 20 20

|

STANDBY

|

Speaker working Status

| Speaker OFF/Standby Speaker ON/Working| 97 20 20 00
97 20 20 01

97 21 21

|

MUTE

|

Mute On/Off

97 26 26

|

BT_BIT

|

Bluetooth status

| BT unpaired = 0

BT paired, Pause= 1 BT paired, Play = 2

97 28 28

|

AUTO_STANDBY

|

Auto standby Status

97 35 35

|

AUTO_WAKEUP

|

Auto Wake Up status

| Auto Wake Up OFF =0| 97 35 35 00
Auto Wake Up ON =1| 97 35 35 01

97 37 37

|

BT_STATUS

|

BT Control Status

NOTE : Auto-Standby activates after 30 minutes of mute or no operation. Any adjustment turns standby off.

Declaration of conformity

Concerning CE, EMC, and LVD safety regulations, VISION products are certified and comply with all known local regulations. VISION commits to ensure all products are fully compliant with all applicable certification standards for sale in participating countries.
Concerning EU directive 2011/65/EU regarding “Restriction of use of certain Hazardous Substances in Electrical and Electronic Equipment” (RoHS), this directive sets out that electrical components should not contain unsafe levels of dangerous chemical compounds. All VISION products certifiably comply with RoHS regulations including the Commission Delegated Directive (EU) 2015/863 of 31 March 2015, amending Annex II to Directive 2011/65/EU as regards to the list of restricted substances, to include phthalates. This product should be returned to the place of purchase at the end of its useful life for recycling.
WEEE Registration : GD0046SY
Concerning REACH restricted chemicals, VISION neither produces nor imports chemicals. Therefore, as Downstream User we are under no obligation to provide safety data sheets. According to ongoing audits based on information provided by our suppliers, our products contain no substances > 0.1 % by weight, included in the candidate list in accordance with Article 59 (1,10) of the REACH regulation. In order to guarantee product safety and to secure our supply chain, we require consistent implementation of REACH by our suppliers. The assurance of REACH-conformity is part of our supplier qualification standards.
Declaration of origin
All VISION products are made in the People’s Republic of China (PRC). VISION products are imported into the EU by VISION who is wholly owned by ‘TD Synnex’, Registered in England Nr. 04625566 at Redwood 2, Chineham Business Park, Crockford Lane, Basingstoke, Hampshire, RG24 8WQ.
Lifetime return-to-base warranty
This product comes with a lifetime return to base warranty. If you have a problem, you are required to provide a DETAILED DESCRIPTION of the fault. Some Vision products are very technical and require troubleshooting all elements of the installation as it may not be the Vision product at fault. Because of this the manufacturer may refuse to replace the item if an adequate description is not provided.

This warranty applies only to the original purchaser and is not transferable.
This warranty protects you against the following:
Failure of any components, including the power supply
Damage when the product is first removed from its packaging if reported within 24 hours of purchase.
If the product is DOA (dead on arrival), you have 21 days from purchase date to notify the national distributor via your AV reseller.
The original purchaser is responsible for shipment of the product to the Vision’s appointed service centre.
The liability of Vision is limited to the cost of replacement of the faulty unit under warranty except for death or injury (EU85/374/EEC).
If the product is end of line (EOL) the Vision will provide a credit instead of replacement.
This warranty does not protect this product against faults caused by abuse, misuse, incorrect installation, unstable or faulty power input, or modification.
Vision aims to send a replacement item within 5 working days however this may not always be possible, in which case it will be sent as soon as practicably possible. UK End users and resellers can request support at http://www.visionaudiovisual.com/support
LEGAL DISCLAIMER : Because we are committed to improving our products, the details above may change without prior warning. This User Manual is published without warranty and any improvements or changes to the User Manual necessitated by typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made at any time and without notice. Such changes will be incorporated into new editions of the User Manual.

Warnings
For electronic products
Caution risk of electric shock. Do not open.
Use only domestic AC outlets. Connecting to an outlet supplying a higher voltage may create a fire hazard. Do not disconnect the plug from the AC outlet by pulling the cord; always pull the plug itself. If you do not intend to use the product for any considerable length of time, unplug the unit. Ensure power cable is not twisted, squeezed, or sheared.
Do not install this product in a location exposed to direct sunlight or close to heating equipment, extremely cold locations, places subject to excessive vibration or dust, and or poorly ventilated places. Do not expose this appliance to excessive humidity, rain, moisture, dripping, or splashing. Do not place objects filled with liquids on or near this product.
Before moving the unit, be sure to pull out the power cord from the AC outlet and disconnect the interconnection cords with other units. If you detect an abnormal smell or smoke, turn this product off immediately and unplug the power cord. Contact your reseller or Vision. For wireless and bluetooth products Never use this product near an aircraft or medical facility. It can cause interference. Use of product in the following locations may result in abnormal video/audio output:
Product installed in walls made of concrete

Product situated near refrigerator, microwave oven or other metal items
A cluttered room where the wireless signals may be blocked

This product has been tested and manufactured to comply with each country’s safety rules, however there is no guarantee that interference will not occur in some scenarios. If interference happens, adjust distance between transmitter and receiver. This product may interfere 5GHz wireless devices. If interference occurs configure your 5GHz router to 2.4 GHz band only.

Federal Communications Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. This equipment generates, uses and can radiate radio frequency energy and may in extreme cases cause harmful interference to radio communications. If this happens the user should try:

Relocating the receiving antenna
Increasing the separation between the equipment and receiver
Connect the equipment to a different power circuit.

Radiation Exposure Statement
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

Frequently Asked Questions (FAQ)

Q: How can I adjust the input levels for different sources?
A: Use the mic input trim controls to adjust sensitivity levels for different microphones. Ensure that the front dials are set to the same position for matching volume levels.

Q: What should I do if the amplifier is not responding to RS-232 commands?
A: If the amp is not responding, try swapping the Tx and Rx wires in the RS-232 connection.