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Williams AV FM+ System Package - FM 557-24

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Description

FM+ System Package (24 R37 receivers)

The FM 557 system package is a complete turnkey solution includes 24 PPA R37N receivers and an FM+ transmitter for both FM and Wi-Fi transmission from the same box. This system features the cutting edge PPA T55 transmitter (replacing the T45 FM transmitter) with multiple digital audio input options and an OLED display with easy-to manage navigation, and network control features.

Each PPA R37N receivers features a seek button channel selection with access to 17 selectable wideband frequencies between 72.1-75.9MHz. The system is expandable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance all for nearly the same cost as traditional FM systems.

Specifications

FM 557-24

Dimensions	8.45? W x 8.25? D x 1.72?H (21.5 cm x 21 cm x 4.4 cm)
Weight	Transmitter: 3.2 lbs (1.45 kg)
Color	Black/Silver with silver 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 062); Input: 100-240 VAC, 50/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector
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� F to +122� F (0� C to 50� C); Storage: -4� F to +158� F (-20� C to 70� C)
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
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
RF Section
Operating Frequencies	72.1-75.9 MHz , 17 wideband channels (selectable)
Frequency Accuracy	� 2 ppm stability, 0-50? C
Deviation	� 75 kHz maximum
Pre-Emphasis	75 microsec
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 (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector
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 On Air Indicator
RF Power	Full, Medium, Low or OFF indiacted 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.
Audio Section
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, �3 dB (re: 1 kHz, �3 dB) (�Music� Audio Preset)
Signal-to-Noise Ratio	67 dB (typical) Transmited RF
Total Harmonic Distortion	Less than 0.25% @ 1 kHz (RF output)
Common Mode Rejection	Greater than 57 dB @ 1 kHz, Mic or Line
Audio Inputs	(1x) Combination 3-pin XLR, 1/4? (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power
Audio Input Gain Adjust	In menu, adjustable to 0 to -50 dB, in 1dB steps
Phantom 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? 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
Headphone Output	1/4? TRS stereo jack, mono signal, 14.85 mW at +9dB, maximum in 33 ? (level adjustable in menu 0 to -40 dB in 2 dB steps)
Line Output	RCA jack (black), -10 dBV (.32 VRMS); Output impedance 100 ohms at +9dB
Input Levels (Bal or Unbal) (at Audio Input Gain = 0dB)	Nominal (1st Amber + 3dB LED) Overload Warning (Displayed on Screen) Absolute Max. Rating*
Microphone	-55 dBV (1.7 mV RMS) -22 dBV (80 mV RMS) +20 dBV (10.0 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 Canada
Warranty	2-year parts and labor

EAR 022

Style	Around-ear speaker
Plug	3.5mm mono
Cord	39"
Driver Size	23 mm
Nominal Impedance	32?
Freq. Response	20 - 20kHz
Weight	15g
Max Power Input	30 mW
Sensitivity	118 dB @ 1kHz

NKL 001

Color:	Black
Weight:	1.5 oz
Length:	18.5� cord
Connector:	NKL 001: 3.5 mm mono plug NKL 001-S: 3.5 mm stereo plug with ring disconnected
Impedance:	8-16 Ohms
Input Power:	500 mW max
Magnetic Field Strength:	25 mW input at 1000 Hz produces 1.7 A/m 6� above the center of loop 85?W input produces 0.1 A/m (IEC Standard)
Approvals:	RoHS, WEEE
Warranty:	One Year

PPA R37

Dimensions:	4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
Weight:	4.6oz (130g) with batteries. 2.6oz (73g) without batteries
Color:	Black
Battery Type:	(2) AA Alkaline or 2 x AA NiMH
Battery Life:	Two (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs (2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrs
Current Consumption:	52mA nominal
Temperature Range:	� 0 to 50C
Channels	17, accessed via seek button in battery compartment
Operating Freq.:	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*
Intermediate Freq.:	75 kHz
FM Deviation:	75 kHz
De-Emphasis:	75 �S
LED Indicator:	Power: Green; Low Battery: Flashes Green
AFC Range:	� 120 kHz
Sensitivity:	2 �V at 12 dB Sinad with squelch defeated
Input Overload:	100 mV
Frequency Response:	200 � 15 kHz
Modulation:	FM, +/- 75 kHz peak deviation
Signal-to-Noise Ratio:	65 dB min @ 100 uV
Receive Antenna:	Integral with earphone/headphone cord
Audio Output:	35 mW max, peak into 16 ohms
Output Connector:	3.5 mm stereo/mono phone jack
Earphone:	Earbud-type with foam cushion, 3.5 mm plug, 32 ?
Auto Shut-off	Enters sleep mode after approx 6 mins of no RF signal
Approvals:	FCC, Industry Canada, RoHS, WEEE
Warranty:	Lifetime PLUS Limited Warranty, 90 Days on most accessories.

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