Certifications
Approvals
FCC, Industry Canada, RoHS, WEEE
Warranty
Lifetime PLUS Limited Warranty, 90 Days on most accessories.
Dimensions
Dimensions
8.45″ W x 8.25″ D x 1.72″H (21.5 cm x 21 cm x 4.4 cm)
Electrical
Cord
39"
Audio
Output
24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector
Section Audio Processor Functions
DSP based
Audio Preset)Signal-to-Noise Ratio
67 dB (typical)
Input Gain Adjust
In menu, adjustable to 0 to -50 dB, in 1dB stepsPhantom
Channels
17 Wideband, accessed via menu
Sensitivity
2 µV at 12 dB Sinad with squelch defeated
Frequency Response
200 Hz – 15 kHz, ±3dB
Signal-to-Noise Ratio
Minimum 65 dB @ 1.0V
Audio Output
35 mW max at 16 Ω
Driver Size
23 mm
Max Power Input
30 mW
Impedance
8-16 Ohms
Connectivity
Input
100-240 VAC, 50/60 Hz. IEC Line Cord
Ethernet
RJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address
Mic Or LineAudio Inputs
(1x) Combination 3-pin XLR, 1/4″ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom powerAudio
Input Overload
100 mV
Headphone Connector
3.5 mm stereo jack, mono output for stereo or mono earphones/headphones
Plug
3.5mm mono
Connector
NKL 001: 3.5 mm mono plug NKL 001-S: 3.5 mm stereo plug with ring disconnected
Input Power
500 mW max
Construction
Color
Black/Silver with silver legends on the front, white legends on the back
Controls
Display Screen
1" OLED
Included Items
Antennas
ANT 005, ANT 021, ANT 024, ANT 025, ANT 029 (Refer to Williams AV’s Antenna Selection Install Guide for FCC-compliant antennas for this product.)Transmission
Environmental
Temperature Range
Operating: +32° F to +122° F (0° C to 50° C); Storage: -4° F to +158° F (-20° C to 70° C)
Shipping
Weight
Transmitter: 3.2 lbs (1.45 kg)
Identifiers
Length
18.5” cord
General
NOTE
The FCC requires this device to be used with approved, FCC 15.203 compliant antennas and be professionally installed. Refer to Williams AV’s Antenna Selection Install Guide for compliant antennas for this product.The FM + connects to the installation location’s Wi-Fi Network. It does not provide a network on its own. The Wi-Fi network will need to be installed and established before the FM + can be used.
FM T55
Rack Mount Standard 19” Rack, one EIA rack space high, 1/2 space wide1–2 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 062)
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.
User Interface
3.12” High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and monitoring.
Dante
Only available on FM T55 D
RF Section Operating Frequencies
72.1-75.9 MHz , 17 wideband channels (selectable)Frequency
Accuracy
± 2 ppm stability, 0-50°
CDeviation
± 75 kHz maximumPre-Emphasis: 75 microsecRF
Field Strength
Does not exceed 80 mV/m at 3 mCompatible
Range
Up to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connectorRF Outputs (1x) #10-32 stud connector in center of unit (pcb mounted)(1x) F-connector on rear chassisRF
Transmit Indicator
1 Green LED
On Air IndicatorRF Power
Full, Medium, Low or OFF indicated by menu icon.RF
Time Out (sleep mode)
30 min. duration, 4 hr. duration, or Always On selected via menu. Starts when audio is below -18 dB level with no button pressed for selected duration.
Compression
1:1, 1.5:1 or 2:1; High-pass and Low-pass
Filter Frequency Controlfrequency Response
31-16000 Hz, ±3 dB (re: 1 kHz, ±3 dB) (“Music”
Transmitted RFTotal Harmonic Distortion
Less than 0.25% @ 1 kHz (RF output)Common
Mode Rejection
Greater than 57 dB @ 1 kHz
TRS Jackaudio 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 peaksHeadphone
Levels
(Bal or Unbal) (at Audio Input Gain = 0dB)Nominal (1st Amber + 3dB
V RMS)Line
-25 dBV (55 mV RMS) +16 dBV (6.3 V RMS) +20 dBV (10.0
V RMS)Approvals
FCC, RoHS3, WEEE
Industry CanadaWarranty
2-year parts and labor
Current Consumption
52mA nominal
Operating Temp. Range
32° – 122°F (0° to 50°C)
Operating Frequencies
72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz*
FM Deviation
75 kHz
De-Emphasis
75 µS
Power Indication
Power button, backlit green. Good battery strength - glows solid. Low battery - flashes.
Receive Antenna
Integral with earphone/headphone cord
Supplied Earphone
Stereo, earbud-type with foam cushion, 3.5 mm plug, 32 Ω
Style
Around-ear speaker
Nominal Impedance
32Ω
Freq. Response
20 - 20kHz
IDP 008
10-3/8" (L) x 6-¼" (W) x 1/8" (H)
Power
Power
14.4 VDC applied through 2.2 kOhms resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1/4″
Battery Type
(2) AA Alkaline or (2) AA NiMH Rechargeable
Battery Life
(2) AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs.(2) AA rechargeable NiMH batteries (BAT 026-2), 1500mAh, approx. 32 hrs.
Indicators
LED)
Overload Warning (Displayed on Screen) Absolute Max. Rating (Stresses above these ratings may cause permanent damage or degrade reliability.)Microphone: -55 dBV (1.7 mV RMS) -22 dBV (80 mV RMS) +20 dBV (10.0
Radio
Modulation
FM, +/- 75 kHz peak deviation
RF
Power Save Mode
Enters sleep mode after approximately 3 minutes of no RF signal
