Specifications

ppa t45

Dimensions

8.45" x 8.25" x 1.72"

Weight

Transmitter: 3.0 lb

Color

Black/Silver with black legends on the front, white legends on the back

Rack Mount

Standard 19” Rack, one EIA rack space high, 1/2 space wide
1–2 units can be mounted in a single rack space with optional RPK 005 (single) or RPK 006 (double) Rack Mount Kits

Power Supply

Desktop Style Transformer (TFP 048)
Input: 100-240 VAC, 50/60 Hz. IEC Line Cord
Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector
Approvals: UL, CUL, Energy Star V, CSA listed

Power ON Indicator

Push On/Push Off latching power button, backlit green indicates power ON, backlight off indicates power OFF, fading from bright to dark indicates Sleep Mode*

Temperature Range

Operating: +32 to +104 Degrees Farenheit

Menu Settings

Audio Presets (Music, Voice, Hearing Assist, Custom), Frequency/Channel selection, Frequency/Channel mode, Audio Input Source (Microphone, Line, Phantom, Digital AES/EB, Digital S/PDIF), High Pass Filter, Low Pass Filter, Compression, RF Output Power, Screen Saver Delay, Test Tone (400 Hz), Headphone Volume, Headphone Source, Ethernet/Network Settings (PPA T45 NET and PPA T45 NET D).

Operating Freq

72.1-75.9 MHz , 17 wideband channels (selectable)

Frequency Accuracy

More or less 2 ppm stability, 0 to 50 Degrees Celsius

Deviation

More or less 75 kHz maximum

Pre-Emphasis

75 µsec

RF Field Strength

Does not exceed 80 mV/m at 3 m

Compatible Antennas

ANT 005, ANT 021, ANT 024, or ANT 025

Transmission Range

Up to 1000 ft with ANT 005 coaxial antenna mounted on rear chassis connector

RF Time-out (Sleep Mode)

Menu selectable - 30 Min, 4 Hours, or Always On; timer starts when audio is below the -21dB VU level and no buttons are pressed

RF Power

Menu selectable - Full, Medium, Low, Off

RF Outputs

(1x) #10-32 stud connector in center of unit (pcb mounted)
(1x) F-connector on rear chassis

RF Transmit Indicator

1 Green LED, indicates RF “On Air”

Audio Processor Functions

DSP based; Compression: 1:1, 1.5:1 or 2:1; High Pass and Low Pass Filter Frequency control

Frequency Response

31 – 16000 Hz, more or less 3 dB (“Music” Audio Preset)

Signal-to-Noise Ratio

Same or more than 74 dB Transmitted RF

Total Harmonic Distortion

Less than 0.25 percent at 1 kHz (RF output)

Common Mode Rejection

More than 57 dB at 1 kHz, Mic or Line

Audio Inputs

(1x) Combination 3-pin XLR, 0.25” (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 44.1 kHz and 48 kHz
(1x) RCA for Digital Audio, S/PDIF, supported sample rates 44.1 kHz and 48 kHz

Audio Input Gain Adjust

In menu, adjustable to 0 to -50 dB, in 1dB steps

Phantom Power

14.4 VDC applied through 2.2 k ohm resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 0.25" TRS jack

Audio Level Indicators

10-LED array that reads -18 to +9 dB at 3 dB intervals. 7 Green, 2 Amber, and 1 red LED. Green LEDs indicate normal operating audio level peaks, Amber LEDS indicate close to overload peaks, Red LED indicates overload peaks

Input Levels (Bal or Unbal)
(at Audio Input Gain = 0dB

Nominal (1st Amber LED), Overload Warning (Displayed on Screen), Absolute Maximum Ratings*

Microphone

-55 dBV (1.7 mV RMS)
-15 dBV (180 mV RMS)
+20dBV (10.0 V RMS)

Line

-25 dBV (55 mV RMS)
+16 dBV (6.3 V RMS)
+20 dBV (10.0 V RMS)

Headphone Output

0.25" TRS stereo jack, mono signal, 15.7 mW, maximum in 33 ohm (level adjustable in menu 0 to -40 dB in 2 dB steps)

Line Output

RCA jack (black), -10 dBV (.32 VRMS); Output impedance 100 ohm

Ethernet

RJ-45 on back of unit (PPA T45NET and PPA T45 NET D) supports CAT5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address. Cat5e sheilded cable must be used to meet FCC requirements

Dante

RJ-45 on back of unit (PPA T45 NET D only) supports CAT5e cable lengths up to 328 feet; 10/100 Base-T IEEE 802.3 compliant, unique MAC address. Cat5e sheilded cable must be used to meet FCC requirements

Approvals

FCC including Part 15, RoHS2, WEEE, Industry Canada