PPA T45NET / PPA T45 Personal PA® DSP FM Wideband Transmitter USER Manual Transmitter Models PPA T45NET and PPA T45 Optional Receiver Models PPA R38, PPA R37, PPA R35-8, PPA R1600 PRINTED IN THE U.S.A.
Personal PA® DSP FM Wideband Transmitter Table of Contents System Connection Overview Figure 1: Typical System Example Wiring and Connections 6 6 7 Power Supply Connection 7 Ethernet Connection 7 Audio Source Connections Figure 2: PPA T45NET Rear View 7 7 Multi–Channel Sources 8 Selecting an Audio source Appropriate for Hearing Impaired Listeners Figure 3: Audio Source Connectors 8 8 Avoiding Hum in the Audio (as a Result of a Ground Loop) Figure 4: Connecting
Personal PA® DSP FM Wideband Transmitter Compression 17 1b. Audio Source 18 1c. Audio Input Gain 19 1d. Headphone Source 19 1e. Headphone Volume 19 2. RF SETTINGS 2a. Channel (or Frequency) 20 20 Figure 14: Channel/Frequency Selection Chart 20 2b. RF Output Power 20 2c. RF Time-Out 21 3. PREFERENCES 3a. Display Mode 21 21 3b. Channel Mode 22 3c. Screen Time-Out 22 3d. User-Entered Transmitter Description 22 3e.
Personal PA® DSP FM Wideband Transmitter Operating the PPA R37 Receiver Figure 25: Battery and channel selections 37 37 Figure 24: PPA R37 controls 37 LED Flash Codes 37 Receiver Model PPA R35-8 38 Operating the PPA R35-8 Receiver 38 Connecting Earphones/Headphones 38 Battery Installation (All Receiver Models) Figure 26: PPA R35-8 controls 38 38 Belt Clip Installation (All Receiver Models) 39 Earpad Cleaning for Earphones and Headphones Figure 27: Belt Clip
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Personal PA® DSP FM Wideband Transmitter System Connection Overview The PPA T45 is an FM Wide-Band transmitter operating in the 72-76MHz bandwidth. Compatible Williams Sound receivers include PPA R38, PPA R37, PPA R35-8 body packs and the PPA R1600 remote speaker. Developed for hearing assistance in places of public access, the PPA T45 is designed for those who need help overcoming background noise, reverberation, or distance from the sound source.
Personal PA® DSP FM Wideband Transmitter Wiring and Connections T45 Rear Figure 2: PPA T45NET Rear View williamssound.com Analog Audio bal — unbal — phantom Line / Mic In ANALOG LINE/MIC INPUT ACCEPTS BALANCED OR UNBALANCED 1/4” PLUG or XLR Digital Audio Line Out RCA LINE OUTPUT FOR MONITORING OR RECORDING AES / EBU In DIGITAL INPUT ACCEPTS AES OR EBU DIGITAL AUDIO XLR PLUG 24VDC 0.
Personal PA® DSP FM Wideband Transmitter Figure 3: Audio Source Connectors IN PHASE FROM MICROPHONE 1 2 1 3 2 3 3 PIN CONNECTOR 3 PIN CONNECTOR LOW IMPEDANCE MICROPHONE UNBALANCED LINE USING 3–PIN CONNECTOR A104 A105 IN PHASE UNBALANCED LINE USING 1/4" CONNECTOR BALANCED LINE USING 1/4" CONNECTOR A107 4.7 K A106 IN PHASE SOURCE A 1 3 2 SOURCE B 4.
Personal PA® DSP FM Wideband Transmitter Avoiding Hum in the Audio (as a Result of a Ground Loop) A hum created by a ground loop can often be eliminated by connecting a capacitor in series with the audio line shield to the transmitter’s ground. This method also maintains good RF shielding. Determining the effectiveness of this method for your installation usually requires some experimentation. Necessary capacitors can be obtained from Williams Sound or from any electronic parts supplier. See Figure 4.
Personal PA® DSP FM Wideband Transmitter Connecting the T45 to other Devices The Analog LINE/MIC Input jack can be used with standard pro audio electronics such as standard pro audio line level, condenser microphones up to 15v or an analog line output from a mixer. The combination jack accepts either XLR or 1/4” (TRS). This source must be configured in the menu before plugging the source into the jack.
Personal PA® DSP FM Wideband Transmitter Controls & Features MENU UP BUTTON AND AUDIO INPUT GAIN ADJUST(+) HOT BUTTON Figure 7: PPA T45 Front View POWER BUTTON (BACKLIT WHEN UNIT IS ON) OLED DISPLAY Power Button AUDIO INPUT LEVEL INDICATORS RF INDICATOR (ON-AIR) MENU BACK BUTTON AND CHANNEL(-) HOT BUTTON MAIN MENU BUTTON HEADPHONE JACK MENU FORWARD BUTTON AND CHANNEL(+) HOT BUTTON MENU DOWN BUTTON AND AUDIO INPUT GAIN ADJUST(-) HOT BUTTON A405 Latching push-button switch turns the transmitter o
Personal PA® DSP FM Wideband Transmitter • While the transmitter is displaying the Menu on the screen: • The Up “^” button navigates upward in the menu or changes a setting. (Figure 9) • The Down “v” button navigates downward in the menu or changes a setting. (Figure 9) • The Left “<” button backs out of the menu one step at a time (see the menu tree). (Figure 9) • The Right “>” button navigates forward in the menu (see the menu tree) or selects a setting.
Personal PA® DSP FM Wideband Transmitter Quick Setup Instructions 1. Position the PPA T45 transmitter near the sound system or mixer from which it will receive audio. It should be free from metallic objects that might interfere with the antenna signal. 2. If the transmitter is free-standing (not rack-mounted), install the ANT 025 whip antenna. Gently thread the ANT 025 onto the stud recessed in the hole on the top of the transmitter (Figure 2) and extend it all the way.
Personal PA® DSP FM Wideband Transmitter Front Screen Menu Tree (Quick Reference) The default “MAIN INFO SCREEN” shows important overall system settings (see Figure 8). The menu screens are used to configure the T45 (Figures 10,11,12). To enter the menu, push the “Menu” button. Then use the Forward “>” and Down “v” buttons to navigate deeper into the menu. When a setting is reached, the display will change to show an up and down caret (“^”,”v”) around the setting.
Personal PA® DSP FM Wideband Transmitter Figure 11: Front-screen Menu Tree (continued) RF SETTINGS RF CHANNEL CH 1 - CH 17 RF OUTPUT POWER FULL MEDIUM LOW OFF RF TIME-OUT 30 MIN 4 HRS ALWAYS ON PREFERENCES DISPLAY MODE FREQUENCY CHANNEL NUMBER CHANNEL MODE 17-CHANNEL 8-CHANNEL SCREEN TIME-OUT 10 MIN 30 MIN 2 HRS ALWAYS ON DESCRIPTION [FIRST CHARACTER SECOND CHARACTER LAST CHARACTER] Scroll up/down A to Z Scroll up/down A to Z Scroll up/down A to Z A406 New Description Saved RESTORE D
Personal PA® DSP FM Wideband Transmitter Figure 12: Front-screen Menu Tree (continued) The Add-on module applies to the PPA T45NET model only. In the PPA T45 model, the first screen in the “Add-On Module” menu will display “No Module Detected”. ADD-ON MODULE STATUS NETWORK SETTINGS ADD-ON MODULE: “ ” NETWORK LINK: “ ” IP CONFIGURATION: “ ” NOTE: BACKING UP (LEFT) WILL NOT SAVE CHANGES. CHANGES ARE SAVED WHEN DONE ENTERING AND RIGHT ARROW BUTTON IS PUSHED.
Personal PA® DSP FM Wideband Transmitter IMPORTANT: Listen to the transmitted audio through the headphone jack, especially when deciding on an appropriate high pass filter. This is a good way to ensure the listening audience is going to receive the highest audio quality. By default, the T45 is shipped in the Music mode. For music, concerts, and other applications where the highest audio quality is desirable, Music is the recommended mode of operation.
Personal PA® DSP FM Wideband Transmitter To set up the Custom Audio Preset: 1. Press the Menu button. The display will show “AUDIO SETTINGS” in the selection box. 2. Press the “>” button to display “AUDIO SOURCE” in the selection box. 3. Press the “v” button twice to display “AUDIO PRESET” in the selection box. 4. Press the “>” button to access the Audio Presets. The current preset will be shown in the selection box. 5. Press the “v” button until “CUSTOM” is displayed in the selection box. 6.
Personal PA® DSP FM Wideband Transmitter 1c. Audio Input Gain The Audio Input Gain adjusts the incoming audio level into the T45. This adjustment affects analog and digital audio. Changes to the input level will affect the level indicated by the front panel LED’s when audio is present. To adjust the audio input level: 1. Press the Menu button. The display will show “AUDIO SETTINGS” in the selection box. 2. Press the “>” button to display “AUDIO SOURCE” on the screen. 3.
Personal PA® DSP FM Wideband Transmitter 2. RF SETTINGS The RF Settings provide the ability to change the broadcasting Channel, RF Output Power level, and the RF time-out delay. 2a. Channel (or Frequency) The Channel setting allows the channel number or corresponding frequency to be selected. Note: this depends on what display mode the transmitter is in (see Step 3a). If the transmitter is in channel display mode, channels 1-17 or 1-8 can be selected depending on channel mode.
Personal PA® DSP FM Wideband Transmitter To change the RF Output Power: 1. Press the Menu button. The display will show “AUDIO SETTINGS” in the selection box. 2. Press the “v” button to display “RF SETTINGS”. 3. Press the “>” button. “RF CHANNEL” will be displayed in the selection box. 4. Press the “v” button to display “RF OUTPUT POWER”. 5. Press the “>” button to access the RF Output Power settings. The currently selected power setting will be shown in the selection box. 6.
Personal PA® DSP FM Wideband Transmitter 3. Press the “>” button to access the Preferences. 4. Press the “>” button to access the “DISPLAY MODE” Setting. The currently selected display mode will be shown in the selection box. 5. Press the “^” or “v” buttons to change the Display Mode to “FREQUENCY” or “CHANNEL”. Note that the setting changes live, it does not need to be “selected” with another button. The setting displayed in the selection box is the one that is active. 6.
Personal PA® DSP FM Wideband Transmitter the front, and the description is displayed as one of the fields on the main info screen. On the web interface (PPA T45NET only), the description appears on the Home page (Figure 18), making it easy to identify which transmitter the web page is controlling. Note that the default description “YOUR T45 NAME HERE” will appear if it has not changed.
Personal PA® DSP FM Wideband Transmitter 4. ADD-ON MODULE (PPA T45NET only) The Add-On Module Settings show up in the menu only if the optional ethernet module is installed (PPA T45NET only). This menu provides the ability to view the Status of the add-on module, choose the IP Address Mode (Static or and Dynamic IP Addressing), change the IP Address and Subnet Mask, set/change the Security Password and choose whether or not to display the IP Address on the front display. 4a.
Personal PA® DSP FM Wideband Transmitter To change the Subnet Mask: 1. Press the Menu button. The display will show “AUDIO SETTINGS” in the selection box. 2. Press the “v” button repeatedly until “ADD-ON-MODULE” is displayed in the selection box. 3. Press the “>” button to access the Add-On Module settings. 4. Press the “v” button repeatedly until “NETWORK SETTINGS” is displayed in the selection box. 5. Press the “>” button to access the Network Settings. 6.
Personal PA® DSP FM Wideband Transmitter Network Setup for Hard-wired Ethernet Devices (Laptop or Desktop PC) The PPA T45NET provides a web interface (set of web pages) to manage the transmitter settings. These web pages can be accessed over an Ethernet network, either hard-wired (through a laptop or desktop PC) or wireless (through an iPad, Android tablet, or smart phone). The web pages can be accessed with nearly all internet browsers, like any website.
Personal PA® DSP FM Wideband Transmitter Figure 15: Williams Sound Device Discoverer Tool (optional) b. Open a web browser on the Laptop or Desktop PC. c. In the address bar, type in the IP address of the T45 (static from step 2 or dynamic from step 5) and hit “Enter”. d. When you connect to the T45, you should see the Login Page (see Figure 17). 6. After logging in, verify control of the T45 by changing a setting from the web page, and watching it change on the T45 front panel display. a.
Personal PA® DSP FM Wideband Transmitter Network Setup for Wireless Devices (iPad, Android Tablet, or Smart Phone) The PPA T45NET provides a web interface (set of web pages) to manage the transmitter settings. These web pages can be accessed over an Ethernet network, either hard-wired (through a laptop or desktop PC) or wireless (through an iPad, Android tablet, or smart phone). The web pages can be accessed with nearly all internet browsers, like any website.
Personal PA® DSP FM Wideband Transmitter 6. Connect to the Router through Wi-Fi on the Wireless Device. a. Make sure the Wi-Fi is turned ON. b. In Wi-Fi settings, look for the router SSID you got from step 1. c. Click on the Router SSID to connect to it. d. Enter the Router Wi-Fi password you got from step 1. e. The wireless device should now indicate that you are “connected” to the router. f. Exit all the way out of the settings back to the home screen on the wireless device. 7.
Personal PA® DSP FM Wideband Transmitter Web Control Interface The PPA T45NET provides a web interface (set of web pages) to manage the transmitter settings. These web pages can be accessed over an Ethernet network, either hard-wired or wireless, with most internet browsers. Transmitter settings can be accessed and changed through the front panel controls - and/or this web interface. Some changes take place live, while others take effect when “applied” or saved.
Personal PA® DSP FM Wideband Transmitter Figure 18: Home Page and Event Log The Home Page shows a summary of the T45 status; there are no controls on this page. The Event Log is only active during each browsing session. When the browser is closed, the log is cleared. When the browser is re-opened, a new event logging session begins.
Personal PA® DSP FM Wideband Transmitter Figure 19: Audio Settings Page The Audio Settings page displays all current audio settings, as well as corresponding T45 web-based controls. Note: Turning off the Audio Level Monitor may improve performance of the webpage, particularly on mobile devices that have less processing power. Network speed can also affect the audio monitor updating and web page performance.
Personal PA® DSP FM Wideband Transmitter Figure 20: RF Settings Page The RF Settings page displays all current RF-related settings as well as corresponding T45 web-based controls. Channel or Frequency Select (depends on Display Mode) Transmitting Power Sets time delay for transmitter to stop transmitting if no audio is detected on input(s) and no buttons are pressed.
Personal PA® DSP FM Wideband Transmitter Figure 21: Network Settings Page The Network Settings page displays NET connectivity settings. Typically these are not needed after initial installation. Dynamic/Static IP Addressing Set static IP Address and Subnet Mask Changes above must be applied to take effect. T45 will reboot and reconnect to the web page.
Personal PA® DSP FM Wideband Transmitter Receiver Safety Information Hearing Safety CAUTION! This product is designed to amplify sounds to a high volume level which could potentially cause hearing damage if used improperly. To protect your hearing and the hearing of others: 1. Make sure the volume is turned down before putting on the earphone or headphone before adjusting the volume to a comfortable level. 2. Set the volume level at the minimum setting that you need to hear. 3.
Personal PA® DSP FM Wideband Transmitter Wideband FM Receivers (Model Selection is Optional) Receiver Model PPA R38 PPA R38 is a 17-channel receiver operating on the 72-76 MHz bandwidth. Features include an easy to read graphic display, front buttons with easy access to menu functions, battery-saving Sleep/Auto-Off Mode, digital volume control, power/low battery indicator, and stereo/mono earphone/headphone jack.
Personal PA® DSP FM Wideband Transmitter Wideband FM Receivers (continued) Receiver Model PPA R37 PPA R37 is a 17-channel receiver operating on the 72-76 MHz bandwidth. Features include, seek-button channel selection, channel-lock capability, battery-saving Sleep Mode, on/off volume control, power/low battery indicator, and stereo/mono earphone jack.
Personal PA® DSP FM Wideband Transmitter Receiver Model PPA R35-8 The PPA R35-8 is an eight channel receiver, operating on 72-76 MHz bandwidth. It features a channel selection knob, on/off volume control, LED power and low battery indicator, and an earphone jack (See Figure 26). Figure 26: PPA R35-8 controls HEADPHONE JACK "ON"/LOW BATTERY INDICATOR CHANNEL SELECTOR KNOB ON/OFF, VOLUME CONTROL SWITCH Operating the PPA R35-8 Receiver A118 Turn the receiver on by rotating the Volume control knob.
Personal PA® DSP FM Wideband Transmitter Belt Clip Installation (All Receiver Models) To Install: Position the belt clip on the rear of the PPA R37, PPA R35-8, or PPA R38 receivers as shown in Figure 27. Turn the belt clip 180º left or right as shown in Figure 27. The belt clip is now installed and ready for use. To Remove: Turn the belt clip 180º so the edge points toward the top of the unit as shown in Figure 27. Gently pull the belt clip away from the unit to remove.
Personal PA® DSP FM Wideband Transmitter Suggestions For Receiver Management Different types of facilities use varying approaches to receiver management and earphone sanitation. Following are some options that customers have used successfully: 1. Regular users purchase or are given their own receiver and also take care of their own batteries and earphones. 2. The facility labels a receiver and earphone for each regular user. The facility maintains the units. 3.
Personal PA® DSP FM Wideband Transmitter Troubleshooting The T45 “RF” (On Air) Indicator is not on • Ensure the transformer (TFP 048) is plugged into the transmitter and any remote power switch is on. • Ensure the electrical outlet is on. • Ensure the power button on the front of the T45 is pressed to the “on” position. • Ensure the 24 VDC power supply is working. • Ensure the RF output is not set to “OFF.” • Ensure there is audio present.
Personal PA® DSP FM Wideband Transmitter • Ensure the transmitting antenna is not in an unsuitable location. Perhaps the transmitting antenna was installed inside a metal enclosure or is separated from the reception area by electrically conducting objects. (i.e., steel stud walls, heating ducts, substantial structural steel, or 2x2 or 2x4 ceiling grid.
Personal PA® DSP FM Wideband Transmitter Remote Control is not working over the hardwired Ethernet network • Please note: If you have a network system administrator, please contact them first before attempting to troubleshoot the network yourself. The following steps are things you can try on a small, non-managed network. • In this situation you have to check the entire signal path between the control device (laptop or desktop computer) and the T45. You can save some time by “pinging” the router and T45.
Personal PA® DSP FM Wideband Transmitter Remote Control is not working over Wi-Fi • Please note: If you have a network system administrator, please contact them first before attempting to troubleshoot the network yourself. If you don’t have a system administrator, the following steps are things you can try on a small, non-managed network.
Personal PA® DSP FM Wideband Transmitter System Specifications Dimensions Weight PPA T45, PPA T45NET Transmitters 8.45” W x 8.25” D x 1.72”H (21.5 cm x 21 cm x 4.4 cm) Transmitter: 3.0 lbs (1.36 kg) Shipping Weight: 4.50 lbs (2.
Personal PA® DSP FM Wideband Transmitter System Specifications Audio Inputs Audio Input Gain Adjust Phantom Power Audio Level Indicators Input Levels (Bal or Unbal) PPA T45, PPA T45NET Transmitters (continued) (1x) Combination 3-pin XLR, 1/4” (TRS) jack for Mic or Line Level Analog Audio, Balanced or Unbalanced Line Level, or Microphone with Selectable Phantom Power (1x) XLR for Digital Audio, AES3/EBU, supported sample rates 44.
Personal PA® DSP FM Wideband Transmitter System Specifications Dimensions Weight Color Battery Type Battery Life PPA R38 Receiver 4.1” x 2.85” x 1.38” (104 x 72 x 35mm) 4.6oz (130g) with batteries. 2.6oz (73g) without batteries Black/Silver. Black ABS Plastic case with Aluminum faceplate (2) AA Alkaline or (2) AA NiMH Rechargeable (2) AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs (2) AA rechargeable NiMH batteries (BAT 026-2), 1500mAh, approx.
Personal PA® DSP FM Wideband Transmitter System Specifications Dimensions Weight Color Battery Type Current Consumption Operating Freq Intermediate Freq PPA R35-8 Receiver 4.1” x 2.85” x 1.38” (104 x 72 x 35mm) 4.6oz (130g) with batteries. 2.6oz (73g) without batteries Black Two (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hours battery life or Two (2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx 32 hours battery life Nominal 40 mA 72-76 MHz, 8 channels: 72.1, 72.3, 72.
Personal PA® DSP FM Wideband Transmitter System Specifications Dimensions Weight Color Battery Type Battery Life PPA R37 Receiver 4.1” x 2.85” x 1.38” (104 x 72 x 35mm) 4.6 oz (130 g) with batteries. 2.6 oz (73 g) without batteries Black 2 AA Alkaline or 2 AA NiMH Two AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs Two AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrs Current Consumption Temperature Range Channels Operating Freq. Intermediate Freq.
Personal PA® DSP FM Wideband Transmitter Lifetime PLUS Limited Warranty Williams Sound products are engineered, designed, and manufactured under carefully controlled conditions to provide you with many years of reliable service.
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10300 Valley View Rd • Eden Prairie, MN 55344 800-328-6190 / 952-943-2252 • FAX: 952-943-2174 www.williamssound.
