Lectrosonics HM - Manual (Page 16)

HM
LECTROSONICS, INC. 16
Low frequency roll-off: Selectable; -3dB at 35, 50 or 70 Hz.
Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB (The low frequency
roll-off is adjustable)
Signal to Noise Ratio (dB):
(overall system, 400 Series mode)
(Note: the dual envelope “soft”
limiter provides exceptionally
good handling of transients
using variable attack and release
time constants. The gradual onset of limiting in the design begins below full
modulation, which reduces the measured figure for SNR without limiting by 4.5 dB)
SmartNR No Limiting w/Limiting
OFF 103.5 108.0
NORMAL 107.0
111.5
FULL 108.5 113.0
Total Harmonic Distortion: 0.2% typical (400 Series mode)
Audio Input Jack: 3-pin Female XLR
Phantom Power: 5V @ 18 mA max., 15V @ 15 mA max.
and 48 V @ 4 mA max., plus “OFF”
Antenna: Housing and attached microphone form the
antenna
Batteries: Two 1.5 Volt AA lithium or rechargeable
NiMH recommended
Battery Life:
AA Batteries No Phantom* 48V On**
Alkaline 5h 0m 3h 30m
NiMh 2500 9h 15m 7h 0m
Lithium 16h 0m 12h 45m
*Tested with a dynamic microphone
**Tested with a Sanken CS1 for a phantom-
powered microphone
Weight: 6.7 oz (190 grams) without batteries
Overall Dimensions: 4.25x1.62x1.38 inches
Emission Designator: 180KF3E
Specifications subject to change without notice.
Operating frequencies:
Block 470 470.100 - 495.600
Block 19 486.400 - 511.900
Block 20 512.000 - 537.500
Block 21 537.600 - 563.100
Block 22 563.200 - 588.700
Block 23 588.800 - 607.900 and 614.100 - 614.300
Block 24 614.400 - 639.900
Block 25 640.000 - 665.500
Block 26 665.600 - 691.100
(Frequency usage varies by country)
Frequency range: 256 frequencies in 100 kHz steps
for one 25.5 MHz wide block
Channel Spacing: 100 kHz
Frequency selection: Control panel mounted membrane switches
RF Power output: 100 mW (nominal)
Compatibility Modes (6) Digital Hybrid Wireless ™ (400 Series),
200 Series, 100 Series, Mode 3
(other analog), Mode 6, and IFB
Pilot tone: 25 to 32 kHz; 5 kHz deviation
(in 400 Series Mode)
Frequency stability: ± 0.002%
Deviation: ± 75 kHz max. (in 400 Series Mode)
Spurious radiation: 60 dB below carrier
Equivalent input noise: –125 dBV, A-weighted
Input level:
If set for dynamic mic: 0.5 mV to 50 mV before limiting.
Greater than 1 V with limiting.
If set for electret lavaliere mic: 1.7 uA to 170 uA before limiting.
Greater than 5000 uA (5 mA) with limiting.
Line level input: 17 mV to 1.7 V before limiting.
Greater than 50 V with limiting.
Input impedance: 300 Ohms
Input limiter: Soft limiter, 30 dB range
Gain control range: 55 dB
Modulation indicators: Dual bicolor LEDs indicate modulation of
–20, -10, 0, +10 dB referenced to
full modulation.
Controls: Control panel with LCD and four membrane
switches.
Specifications and Features
The FCC requires that the following statements be included in this manual:
For body worn operation, this HM Transmitter has been tested and meets the FCC
RF exposure guidelines when used with the Lectrosonics accessories supplied or
designated for this product. Use of other accessories may not ensure compliance with
FCC RF exposure guidelines. Contact Lectrosonics if you have any questions or need
more information about RF exposure using this product..
This device complies with FCC radiation exposure limits as set forth for an uncontrolled
environment. This device should be installed and operated so that its antenna(s) are not
co-located or operating in conjunction with any other antenna or transmitter.