RDL FP-TPX3A Format-A Twisted Pair Remote Controlled Mixer

Description
Warranty Information

Overview

The FP-TPX3A is the ideal choice where a user-accessible mixer must control the volume of multiple sources in a zone. RDL Format-A twisted pair audio senders connect directly to the mixer, allowing each user input to be balanced or unbalanced, mic or line level. FP TPX3A outputs are provided in balanced and unbalanced formats. Two unbalanced outputs are available to feed the mono mixer output to a stereo amplifier input. Remote control of the mixer allows audio signals to be kept at a single equipment location. Audio is mixed by VCA circuits that are adjusted by control signals from the remote control.

Two Format-A jacks are provided for signal inputs. If the Format-A senders are daisy-chained, only one of the input jacks is used. Two jacks are provided so that two home runs from Format-A senders are possible. The FP-TPX3A provides power to all connected active senders. The FP-TPX3A is designed to mix the three Format-A audio signals from pairs A, B and C. A detachable terminal block allows a LOCAL INPUT to be connected directly to pair C. This input may be used if no connected sender is set to use pair C. The terminal block is included so a local paging or music source can be connected if pair C would not otherwise be used. Each INPUT GAIN control is calibrated to be adjusted clockwise for an unbalanced passive sender; counter-clockwise for an active sender or passive sender with a balanced input. A standard RDL dual-LED VU meter provides visual indication of the output level from the mixer. The mixer output is mono. The output is available on a single balanced detachable terminal block or on two unbalanced RCA jacks intended to connect directly to the stereo input of a power amplifier.

The AUDIO LED illuminates whenever audio is present at the output of the mixer, defined as greater than 35 dB below +4 dBu. This threshold triggers the AUDIO DETECT OUTPUTS. Two open collectors are provided on a detachable terminal block. One of these terminals switches low when audio is present, and may be used to switch amplifiers or other system components on. The other terminal is pulled low when audio is not present. It is intended for muting the digital carrier of power amplifiers equipped for remote muting. Either of these terminals may be used to trigger a variety of other RDL modules or OEM equipment. The use of these terminals to shut down unused equipment can produce effective system energy and cost savings. These control terminals normally remain triggered for 10 minutes after audio is absent. The delay can be increased to 20 minutes using a ground jumper on the terminal block.

The mixer levels are set by RDL remote controls that connect directly to the FP-TPX3A through an RJ45 jack using standard twisted pair cable. The control ports on the mixer and remote controls are color-coded light blue to distinguish them from standard Format-A jacks. The mixer provides power to the remote control. Either a two or three channel remote control may be used. If remote mixing of only two channels is needed, a two channel remote may be used. Pair C becomes the input channel that is not remotely controlled. The PAIR C/LOCAL INPUT can be left active at unity gain, typically for a paging source, or may be disabled by a switch set during installation. If the cable connected to the remote control becomes disconnected, the mixer output mutes.

Features:

3-Channel Remote-Controlled Audio Mixer
VCA Level Control for Each Input Pair
Format-A Twisted Pair Inputs
One Detachable Balanced and Two RCA Unbalanced Mono Outputs
Twisted Pair Interconnection to Remote Control
Directly Controlled by RDL Remote Controls with 2 or 3 channels
Local Input Available if Only Two Twisted Pair Inputs Used
Paging Source May Connect to Local Input
Front-Panel Gain Trim Matches Active or Passive Format-A Senders
Dual-LED VU Meter Displays Mixer Output Level
Audio Presence Detector Controls Open-Collector Outputs
Detector Outputs Intended to Enable Power Amplifiers or System Power
Energy Savings Possible Using Detector Outputs
Selectable 10 or 20 Minute Detector Release Delay

Specifications

Inputs (3):

RDL FORMAT-A; Balanced line level

Input Connections:

RJ45 (FORMAT-A); Detachable Terminal Block (Pair C)

Outputs (3):

150 Ω balanced; 1 kΩ unbalanced (2)

Output Connections:

Detachable Terminal Block (balanced); RCA Phono Jacks (unbalanced)

Output Level:

+4 dBu balanced, -10 dBV unbalanced

Frequency Response:

20 Hz to 20 kHz (± 0.25 dB)

THD+N:

< 0.05% (20 Hz to 20 kHz); <0.02% (1 kHz)

Noise below +4 dBu:

< -100 dB (all channels off); <-75 dB (any channel on); <-70 dB (all channels on)

Headroom above +4 dBu:

> 18 dB

CMRR:

> 80 dB (50 Hz to 150 Hz)

VCA attenuation:

>90 dB (each input, remote control volume off)

Indicators (3):

Dual-LED VU meter (2); Audio present (threshold = 35 dB below +4 dBu output)

Power Connections (3):

Terminal block; dc power jack (2)

Power Requirement:

24 Vdc @ 120 mA plus connected FORMAT-A sender currents

Overall Dimensions:

Height: 1.42 in. 3.61 cm; Width: 3.25 in. 8.26 cm; Length: 8.14 in. 20.68 cm

Package Type:

Cardboard Box

Package Dimensions:

3.375 x 8.5625 x 1.5 in.

Shipping Weight:

1.18 lbs.

RDL Three-Year Limited Warranty Installation of these products by the Purchaser shall constitute Purchaser’s acknowledgement and acceptance of the terms and conditions for sale and of this warranty, and shall constitute the Purchaser’s determination of the suitability of this product for the Purchaser’s intended application. Radio Design Labs, Inc., also referred to as RDL®, warrants to the Purchaser that products manufactured by RDL are free from defects in material and workmanship. This warranty applies to the period of three years from the date of shipment, except for component parts or products purchased from other sources and supplied by RDL. Such component parts or products bear only the warranty of the manufacturer thereof in effect at the time of shipment to the Purchaser. RDL will, without charge, and after written notice has been received and acknowledged by RDL, repair an RDL product if proved to be defective according to the usage of the trade, when such equipment is received by RDL at the location it designates with shipment costs prepaid by the Purchaser. RDL shall not be liable for any expense whether for repairs, replacements, material, service, or otherwise, incurred by the Purchaser or modifications made by the Purchaser to the product. No equipment shall be deemed defective if it shall fail to operate in a normal or proper manner due to exposure to excessive moisture in the atmosphere, excessive temperature extremes, improper environmental cleanliness, or any other environment not consistent with the principles of good engineering practice. In no event shall RDL have any liability for consequential damage or expense directly or indirectly arising from the use of the products, or any inability to use it either separately or in combination with other equipment or materials, or from any other cause, whether used in accordance with instructions or not. This warranty is void if equipment is altered in any way by other than RDL. RDL products are NOT intended for use in life support appliances, devices, or systems. Use of RDL products in such applications is done solely at the liability of the reseller/installer and/or end user. RDL reserves the right to change design parameters and specifications at any time without notice. The performance measurements reflect the products at the time of printing. This warranty is in lieu of all others, either expressed or implied. No representative is authorized to assume for RDL any other liability in connection with RDL products.