MAN 143C
Hearing Helper
™
Wireless FM Listening System
17
Hearing Helper™ Specifications
T800 Transmitter
Dimensions:
21.8 cm (8.6") W x 21.8 cm (8.6") D x 4.6 cm (1.8") H
Weight:
1.32 kg (2.9 lbs)
Color:
Black with white legends
Power:
AC: 100 to 240 VAC, 50-60 Hz, 400 mA, power inlet IEC C14 DC: 12 to 13
VDC, 800 mA, 2.1 mm DC input jack
Power Switch:
Push ON - push OFF switch with red light
Temperature Range:
Operating: 0 C to 40 C (+32 F to 104 F) Storage:-20 C to 70 C (-4 F to +158 F)
Operating Frequencies:
Selectable: Ch 1= 863.250 MHz, Ch 2 = 863.750 MHz, Ch 3 = 864.750 MHz,
13 other frequencies available (see manual)
RF Output:
5 to 10 dBm (full power switch)
RF Switch:
Low/ Full power switch on rear panel
LCD Display:
Backlit, Ch #, frequency, user name, audio level VU (indicated by 11 segments
total)
Menu Push Buttons:
Menu, +Ch select, -Ch select, SET
Headphone Output:
Mono, 1/4" tip barrel jack, 0.35mW power into 33 ohms, level adjust on front
panel
Stability:
+/- .05 MHz (0 C to 40 C)
FM Deviation:
45 kHz (line input, L+R, 1 kHz, 0.5 Vrms)
Pre-Emphasis:
50 µsec
Nominal Range:
Up to122 meters (400 ft.) at RF switch full power with Williams Sound R863
receiver
Frequency Response:
Line input: 25 to 10.0 kHz +- 3 dB
Microphone input: 110 to 8.5 kHz +/- 3 dB. Dynamic mic only
Signal/Noise Ratio (1 KHz):
Line input: > 50 dB Microphone input: > 40 dB
%THD + noise (1 KHz):
Line input: < 0.4% Microphone input: < 0.5%
Audio Processing:
2:1 compression (line or microphone input)
Audio Input:
Line input: mono, RCA jack x 2 (labeled left and right) Microphone input:
Balanced/ unbalanced, combo XLR (3 pin) or 1/4" TRS jack.
Audio Levels: (at FM deviation)
Line input: 0.5 Vrms (-6 dBV), rotary gain adjust rear panel at maximum
Microphone input: 10 mVrms (-40 dBV), rotary gain adjust rear panel at
maximum
Common Mode Rejection:
Microphone input: > 22 dB @ 1 kHz, balanced input
Antenna:
22.9 cm (9") long, semi flexible, adjustable, removable, rear panel connector
Compatible Receivers:
R863
Approvals:
CE, RoHS, WEEE, ETSI EN 301 357-1, 2
Warranty:
3 years (excluding accessory products)
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
