Extron electronic VLM 1000 用户手册

Microphone type ...........................  Omnidirectional electret condenser
Microphone gain ...........................  -6 dB to +6 dB, adjustable in 1 dB steps

Number/signal type .....................  1 mono, via integrated electret condenser microphone or 

1 mono, unbalanced, via auxiliary mic input jack with 3.3 VDC plug-in power; 

and  

1 stereo, unbalanced, via auxiliary line input jack, mixed with mic input

Connectors .....................................  (1) 3.5 mm mini audio jack (tip = left, ring = right, sleeve = GND) for 

auxiliary line input (Audio In) 

(1) 2.5 mm mini audio jack (tip = signal + bias voltage, sleeve = GND) for 

auxiliary mic input (Mic)

Signal type ......................................  Infrared output
Carrier frequencies ........................  A and C: 2.3 MHz (selectable) 

B and D: 2.8 MHz (selectable)

Operating range ............................  40' (12.2 m) line of sight
Transmission angles ......................  150° horizontally and 90° vertically

Power ..............................................  Supplied by an internal battery
Charger requirements ...................  +5 VDC, 0.5 A on a 3.5 mm o.d. DC power jack, center pin positive
Batteries

Number/type ....................  1 AA size NiMH or alkaline battery
Operating time (h:mm).....  Rechargeable 2700 mAh NiMH batteries: up to 8 hours, continuous use 

Alkaline batteries: up to 8 hours, continuous use

Recharging time ................  6 hours for a 2700 mAh NiMH battery

Temperature/humidity ................  Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing 

Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing

Cooling ...........................................  Convection, no vents
Mounting ........................................  Can be used as a pendant with the included lanyard.
Enclosure type ...............................  High impact plastic
Enclosure dimensions ...................  4.7" H x 1.4" W x 1.1" D* 

(12.0 cm H x 3.5 cm W x 2.9 cm D*) 

(*Depth includes clip.  Depth without clip = 0.9" [2.3 cm])

Product weight ..............................  1.7 oz (50 g) without battery 

2.6 oz (75 g) with battery

Shipping weight ............................  1 lb (<1 kg)
Vibration .........................................  ISTA 1A in carton (International Safe Transit Association)
Regulatory compliance

Environmental ...................  Complies with the appropriate requirements of RoHS and WEEE.
Accessibility .......................  Section 508 of the Rehabilitation Act (29 U.S.C. 794d)

MTBF ...............................................  30,000 hours
Warranty .........................................  3 years parts and labor

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