Page 1
TPX 88 and TPX 88 A Twisted Pair Matrix Switcher Twisted Pair Matrix Switcher with Local Audio Outputs 68-733-01 Rev. C 12 05...
Page 2
Precautions Safety Instructions • English Warning Power sources • This equipment should be operated only from the power source indicated on the product. This This symbol is intended to alert the user of important operating and maintenance equipment is intended to be used with a main power system with a grounded (neutral) conductor. The (servicing) instructions in the literature provided with the equipment.
Audio- 3 up for RS-422. RS-422 H. sync- * The TPX 88 A switches pair 3 and 6. The TPX 88 does not switch pair 3 and 6. Twisted Step 6 Audio or serial data from an RGB video MTP Pairs is incompatible with both TPX models.
Page 4
(TPX 88 A only) Video and audio LEDs indicate that video and/or audio is selected for configuration. (TPX 88 A only) Mute All button mutes and unmutes all audio outputs. (TPX 88 A only) Volume knob adjusts the input level or output volume in audio level adjust mode. Create a tie 2.
Example 1: Creating a set of video and audio ties Example 2: Adding a tie to a set of video and audio ties ..........3-9 Example 3a: Removing an audio tie from a set of ties (TPX 88 A only) ...... 3-10 ........3-12 Example 3b: Removing a tie from a set of ties (TPX 88 only) Viewing a configuration ....................
Page 6
Table of Contents, cont’d Viewing and adjusting the input audio level (TPX 88 A only) ........3-20 ..........3-20 Example 7: Viewing and adjusting an input audio level Viewing and adjusting the output volume (TPX 88 A only) .......... 3-22 ........
Page 7
Installing labels in the matrix switcher’s buttons ............A-6 Button label blanks ......................A-7 68-733-01 Rev. C 12 05 All trademarks mentioned in this manual are the properties of their respective owners. TPX 88 Matrix Switchers • Table of Contents...
Page 8
Table of Contents, cont’d TPX 88 Matrix Switchers • Table of Contents...
TPX 88 Twisted Pair Matrix Switchers Chapter One Introduction About the TPX 88 Manual About the TP A/V System About Both TPX Switcher Models About the TPX 88 A Switchers Features...
About the TPX 88 Manual This manual provides installation, operation, and maintenance information for the Extron TPX 88 and TPX 88 A matrix switchers. The TPX switchers are 8-input by 8-output matrix switchers for routing the signals that Extron twisted pair (TP) transmitters and receivers use to distribute video and audio signals in an A/V system.
Page 11
✡ ✡ ✡ ✝ ✝ ✝ ✝ ✝ ✝ ✝ ✝ ✦ ✦ ✦ ✦ ✦ s t i ✝ . y l ✦ i t i t t i ✡ s ' r TPX 88 Matrix Switchers • Introduction...
Page 12
Introduction, cont’d Extron twisted pair products’ attributes (continued) ✝ ✝ ✝ ✝ s t i ✝ . y l TPX 88 Matrix Switchers • Introduction...
CAT 5 cable can be satisfactorily used for some products (refer to each product’s user manual). The system can be used with cable other than that recommended, but video performance will be compromised and maximum cable lengths and video resolutions must be decreased. TPX 88 Matrix Switchers • Introduction...
LCD Projector #1 Figure 1-1 — Typical TPX 88 A matrix switcher application The TPX 88 switchers support I/O grouping, a feature that lets you virtually divide the matrix into up to four smaller sub-switchers, making installation and control easier. I/O grouping allows you to separate different signal types to avoid connecting signal types from different, incompatible, transmitter/receiver families.
On the TPX 88 A, the switching of the audio portion of the TP link can either be linked with the video portion (audio follow) or independent of the video portion (audio breakaway).
(RGBHV, RGBS, RGsB, RsGsBs, HDTV, component video, S-video, or composite video) and audio. Audio outputs (TPX 88 A only) — If the input TP link originated from a member of the TP family of transmitters (see the table on page 1-3 and page 1-4), the TPX 88 A outputs 8 stereo audio outputs, balanced or unbalanced, on 3.5 mm,...
Page 17
Audio output volume (TPX 88 A only) — The audio level of each local output can be adjusted through a range of 100% (no attenuation) to 0% (full attenuation). The audio level can be adjusted under front panel or RS-232/RS-422 control.
Page 18
Power supply — Includes an internal 100 VAC to 240 VAC, 50/60 Hz, 25 watts auto-switchable power supply, which provides worldwide power compatibility. 1-10 TPX 88 Matrix Switchers • Introduction...
Figure 2-1 — Rack mounting a TPX switcher Insert the switcher into the rack, align the holes in the mounting bracket with those of the rack. Secure the switcher to the rack using the supplied machine screws. TPX 88 Matrix Switchers • Installation...
1-3 and page 1-4 for audio compatibility. Figure 2-2 shows the rear panel of a TPX 88 A twisted pair matrix switcher. The rear panel of the TPX 88 has most of the same features as the TPX 88 A, but without the local audio connectors.
H. Sync – right – * The TPX 88 A switches wire pair 3 and 6. The TPX 88 does not switch wire pair 3 and 6. Audio or serial data from an RGB video MTP is incompatible with both TPX models. They cannot be switched.
On RGB video MTPs, the audio or serial data that is carried on wire pairs 3 and 6 is incompatible with the TPX 88 A. The TPX 88 A cannot switch the audio or serial data, output the audio locally, or break the audio away.
Extron skew compensation coax cables are available in lengths of 2 through 20 feet, see Appendix A for part numbers. TPX 88 Matrix Switchers • Installation...
LCD Projector UTP skew for red video. Figure 2-4 — Pair skew equalization Audio outputs connectors (TPX 88 A only) The Audio Outputs connectors are 3.5 mm, 5-pole captive screw connectors that output unamplified, line level audio. The local audio outputs follow the RJ-45 outputs;...
The Remote port is a 3.5 mm, 5-pole captive screw connector for serial RS-232/RS-422 control of the TPX 88. Wire the connector as shown in figure 2-7 and connect a host device, such as a computer, touch panel control, or RS-232 capable PDA.
The control buttons are grouped in the middle of the panel. On the TPX 88 A only, the input/ output (I/O) selection button and audio controls are grouped on the right side of the panel.
Enter button — The Enter button saves changes when you set up a new configuration. To create a simple configuration: • (TPX 88 A only) specify video, audio, or both [see the I/O button ( and the Video and Audio LEDs ( •...
The current input audio level setting for the selected input is displayed by the output buttons. A more detailed explanation of audio gain adjustment is included in Viewing and adjusting the input audio level (TPX 88 A only) beginning on page 3-20.
I/O button indicators on and off from left to right lit green, right to left lit red, and left to right lit amber. An error-free power up self-test sequence leaves the Video and/or the Audio LEDs on (TPX 88 A only), all other LEDs unlit, and all I/O buttons either unlit or showing background illumination.
• Segregating input and output devices that are in separate rooms. • Isolating video from being displayed on specific output devices for operational security reasons. TPX 88 Matrix Switchers • Operation...
Press the Esc button to clear any input buttons, output buttons, or control buttons that may be lit. (TPX 88 A only) Select to configure video, audio, or both by pressing the I/O button. The Video and/or Audio LEDs light to indicate that video and/or audio are selected.
This example assumes that there are no ties in the current configuration. Press and release the Esc button. TPX 88 A only — To select video and audio for the tie, if necessary, press and release the I/O button until the LEDs light (figure 3-5).
This example assumes that you have performed example 1. Press and release the Esc button. TPX 88 A only — To select video only for the tie, if necessary, press and release the I/O button until only the video LED lights (figure 3-9).
Press and release the Enter button (figure 3-12). The current configuration is now video input 5 tied to video output 1, output 3, output 4, and output 8; and (TPX 88 A only) audio input 5 tied to audio output 3, output 4, and output 8.
Page 37
Press the Enter button to confirm the configuration change. All input and output buttons return to unlit or background illumination. ENTER The Enter LED goes out. Figure 3-16 — Press the Enter button TPX 88 Matrix Switchers • Operation 3-11...
Operation, cont’d Example 3b: Removing a tie from a set of ties (TPX 88 only) This example can be performed on a TPX 88 only. The following steps show an example in which an existing tie is removed from the current configuration.
Press and release the View button. (TPX 88 A only) Select video, audio, or both to view by pressing the I/O button. The Video and/or Audio LEDs light to indicate that video and/or audio are selected.
Page 40
The output buttons for outputs that are tied to input 5 light the appropriate color: Amber for audio and video ties (audio follow) Green for video ties (audio breakaway) Red for audio ties (audio breakaway) Figure 3-22 — Select an input 3-14 TPX 88 Matrix Switchers • Operation...
Page 41
Press the View button to exit view mode. All input and output buttons return to unlit or background illumination. VIEW The View LED goes out. Figure 3-25 — Press the View button to exit view mode TPX 88 Matrix Switchers • Operation 3-15...
Operation, cont’d Example 4b: Viewing ties (TPX 88 only) The following steps show an example of viewing the ties in the current configuration. Where an explanation is helpful, the steps show the front panel indications that result from your action.
Press and release the Esc button. Press and hold the Preset button for approximately 2 seconds (figure 3-29). Press and hold the button. 2 seconds PRESET PRESET = Blinking LED Figure 3-29 — Enter save preset mode TPX 88 Matrix Switchers • Operation 3-17...
Preset 10 Preset 11 Preset 12 Preset 13 Preset 14 Preset 15 Preset 16 Unlit input buttons indicate no preset is assigned to those location. Recalling an unlit preset clears all ties. Figure 3-32 — Select recall preset mode 3-18 TPX 88 Matrix Switchers • Operation...
Page 45
PRESET All input and output buttons return to unlit or background illumination. ENTER The Enter LED returns to unlit. The Preset LED returns to unlit. Figure 3-34 — Press the Enter button TPX 88 Matrix Switchers • Operation 3-19...
Viewing and adjusting the input audio level (TPX 88 A only) On the TPX 88 A, the audio level of each input can be displayed and adjusted through a range of -18 dB to +24 dB to ensure that there is no noticeable volume difference among sources.
Page 47
Figure 3-37 — Adjust the input audio level If another input button is pressed and released, the level value for the current input is saved and the level value for the newly selected input is displayed. TPX 88 Matrix Switchers • Operation 3-21...
Viewing and adjusting the output volume (TPX 88 A only) On the TPX 88 A, the audio level of each local output (the output on the captive screw connectors) can be displayed and adjusted through a range of 100% (no attenuation) to 0% (full attenuation).
The button lights to indicate that the output 1 audio is selected. = Unlit = Lit (up to 7 dB of attenuation) (up to 14% of input signal output) Figure 3-40 — Select an output TPX 88 Matrix Switchers • Operation 3-23...
Page 50
Press the I/O button to exit audio adjust mode. VIDEO AUDIO All input and output buttons return to unlit or background illumination. The Audio LED goes out. Figure 3-42 — Deselect audio mode 3-24 TPX 88 Matrix Switchers • Operation...
Muting and unmuting the local audio (TPX 88 A only) You can mute all local audio (captive screw connector) outputs from the front panel. Mute or unmute the audio outputs by pressing and releasing the Mute All button (figure 3-43).
AC power is being applied (figure 3-45). System reset clears all ties and presets and resets all I/O grouping. On the TPX 88 A, system reset also sets all input audio levels to unity gain (+0 dB).
If applicable, use different colors for video and audio. Worksheet example 1: System equipment Figure 3-47 shows a worksheet for a TPX 88 A in a fictional organization. System hardware is annotated. Input 6 has no connection, so it has been crossed out.
USP 405 podium (DVS 406) Main Main Podium Conf. Sound Lobby Hall Hall monitor room system (USP 405) monitor PJ#1 PJ#2 Output destinations Worksheet Example Figure 3-49 — Worksheet example 3: Test configuration TPX 88 Matrix Switchers • Operation 3-29...
When a local event such as a front panel operation occurs, the switcher responds by sending a message to the host. The switcher-initiated messages are listed below (underlined). (c)Copyright 2003, Extron Electronics, TPX 88, Vx.xx The switcher initiates the copyright message when it is first powered on. Vx.xx is the firmware version number.
E11 — Invalid preset number (too large) E12 — Invalid output number (too large) E13 — Invalid value (out of range) E14 — Illegal command for this configuration E17 — Timeout (only caused by direct write of global presets) TPX 88 Matrix Switchers • Programmer’s Guide...
1 through 4 groups (0 = no group) = Global preset # 16 maximum (0 = current configuration) = Video/audio mute: 0 = no mutes 2 = audio mute = Controller firmware version number to second decimal place TPX 88 Matrix Switchers • Programmer’s Guide...
The & read tie command and the % read tie command can be used interchangeably for video on the TPX switcher. Read audio output tie Audio input tied to output Example: Video input 7 tied to output 7. TPX 88 Matrix Switchers • Programmer’s Guide...
Page 64
1= mute on, 0 = mute off. Global audio mute Amt1 Mute all audio outputs. The front panel Mute All LED lights. Global audio unmute Amt0 Unmute all audio outputs. The front panel Mute All LED goes out. TPX 88 Matrix Switchers • Programmer’s Guide...
Page 65
Reset global presets and names Clear all global presets. Reset an individual global preset Clear global preset Esc X10 Reset audio input levels Reset all audio input levels (gain and attenuation) to 0 dB. TPX 88 Matrix Switchers • Programmer’s Guide...
Page 66
(TPX 88 A). Request part number xx-xxx-xx See appendix A for part #s. Example: 60-542-01 TPX 88 A part # is 60-542-01. Query firmware version Example: 1.23 The installed firmware version is 1.23 (sample value only). TPX 88 Matrix Switchers • Programmer’s Guide...
Matrix Software Matrix Software, cont’d Two software programs accompany the TPX 88 switchers: • The Extron Matrix Switcher+ Control Program (Extron part #29-015-01), which communicates with the switcher via the RS-232/RS-422 port, provides an easy way for you to set up ties and sets of ties.
Page 69
To create a tie, drag an input box to one or more output boxes. To remove a tie, drag the output box to its tied input box. TPX 88 Matrix Switchers • Matrix Software...
Click the mouse on the Open button. A status window, which shows the progress of the upload, appears. The file(s) upload to the TPX switcher may take a few minutes. TPX 88 Matrix Switchers • Matrix Software...
The level is expressed as a percentage of the input audio volume that is applied to the output; 0% is full attenuation (audio is silent), 100% is full volume. TPX 88 Matrix Switchers • Matrix Software...
Take button are indicated by +. Ties that will be broken when you click the mouse on the Take button are indicated by –. Figure 5-4 — Ties shown as crosspoints TPX 88 Matrix Switchers • Matrix Software...
MATRIX Switcher+ Control Help icon (shown at right). • From within the Matrix Switcher Control Program, click on the Help menu on the main screen. • From within the Matrix Switcher Control Program, press the F1 key. TPX 88 Matrix Switchers • Matrix Software...
You can also see an example of a completed Extron’s Button-Label Generator window by clicking on the Help menu on the main screen, choosing Show Help, and clicking on the Load Demo button. TPX 88 Matrix Switchers • Matrix Software...
TPX 88 Twisted Pair Matrix Switchers A ppendix A Reference Information Specifications Part Numbers Button Labels...
Page 76
Crosstalk ........<-80 dB @ 1 kHz, fully loaded Stereo channel separation ..>-90 dB @ 1 kHz CMRR ..........>75 dB @ 20 Hz to 20 kHz Audio input — TPX 88 A only Number/signal type ....8 stereo, balanced/unbalanced Connectors ........(8) 8-pin female RJ-45 Impedance ........
Page 77
Compliances ......... CE, FCC Class B, VCCI, AS/NZS, ICES MTBF ..........30,000 hours Warranty ........3 years parts and labor All nominal levels are at ±10%. Specifications are subject to change without notice. TPX 88 Matrix Switchers • Reference Information...
Insert a button label into the cap and gently but firmly press the cap onto the white backing plate. Separate two Press the button into place in the matrix switcher. piece button here. TPX 88 Matrix Switchers • Reference Information...