VRM
Lectrosonics
VRM
Lectrosonics VRM Venue Receiver Master Host for VRT and VRS Modules
The Venue Receiver system is a modular UHF design that operates with Digital Hybrid Wireless™ transmitters and a variety of analog transmitters. It consists of a Venue Receiver Master (VRM) and one to six plug-in receiver modules. The VRM includes an antenna multi-coupler, computer communications interface and the mechanical rack mounting for the receiver modules.
The VR’s design offers a tremendous degree of flexibility. For example, each of the three pairs of receivers can be combined and used for ratio diversity or frequency diversity reception. Each individual receiver can be used by itself for phase switched diversity reception and both models can be mixed in a single VRM assembly.
The VR’s design offers a tremendous degree of flexibility. For example, each of the three pairs of receivers can be combined and used for ratio diversity or frequency diversity reception. Each individual receiver can be used by itself for phase switched diversity reception and both models can be mixed in a single VRM assembly.
Note: Use with Lectrosonics VRT Tracking module, rented separately.
Technical Tools
PDF Documents
Manufacturer Specs
Operating Frequencies (MHz) for Receiver Modules:
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
Block 27 691.200 - 716.700
Block 28 716.800 - 742.300
Block 29 742.400 - 767.900
Digital latency:
• 1.5 mS (receiver only - hybrid mode)
• 3.0 mS (receiver and transmitter in hybrid mode)
• 3.0 mS (receiver only - analog compatibility mode)
The 3.0 mS latency in analog compatiblity mode time aligns the audio from analog and hybrid transmitters when they are used together in a Venue system.
Frequency selection: 256 frequencies in 100 kHz steps per 25.5 MHz frequency block
Channel Spacing: 100 kHz
Dual Block Range: Built in antenna mulitcoupler covers a two block range.
Pilot tone: 25 to 32 kHz; 5kHz deviation; unique pilot tone frequency for each selected carrier frequency (Hybrid mode)
Deviation: ± 75 kHz (max) (Hybrid mode)
Receiver Type: Triple conversion superheterodyne
Frequency Stability: ±0.001%
Front End Bandwidth:
VR Master: 50 MHz @ -3 dB
VRS Module: 30 MHz @ -3 dB
VRT Module: 11 MHz @ -3 dB
Sensitivity (20 dB Sinad): 0.9 uV
AM Rejection: >60 dB, 2 uV to 1 Volt
Image and Spurious Rejection: 85 dB
Third Order Intercept: VRS:+0 dBm, VRT: +6 dBm
Diversity Methods: Switched, ratio and frequency
FM Detector: Digital pulse counting detector @ 300 kHz
Audio Performance (overall system):
Frequency Response: 32 Hz to 20 kHz (+/-1dB), overall system (400 Series mode)
THD: 0.2% (typical) (400 Series mode)
SNR at receiver output (dB) (in Hybrid operating mode):
SmartNR No Limiting W/ Limiting
OFF 103.5 108.5
NORMAL 107 111.5
FULL 108.5 113
LCD: 122x32 graphical display
Power Requirements: 10 to 18 VDC; 12 W max., (1.2 A at 10 VDC to .67 A @18 VDC)
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
Block 27 691.200 - 716.700
Block 28 716.800 - 742.300
Block 29 742.400 - 767.900
Digital latency:
• 1.5 mS (receiver only - hybrid mode)
• 3.0 mS (receiver and transmitter in hybrid mode)
• 3.0 mS (receiver only - analog compatibility mode)
The 3.0 mS latency in analog compatiblity mode time aligns the audio from analog and hybrid transmitters when they are used together in a Venue system.
Frequency selection: 256 frequencies in 100 kHz steps per 25.5 MHz frequency block
Channel Spacing: 100 kHz
Dual Block Range: Built in antenna mulitcoupler covers a two block range.
Pilot tone: 25 to 32 kHz; 5kHz deviation; unique pilot tone frequency for each selected carrier frequency (Hybrid mode)
Deviation: ± 75 kHz (max) (Hybrid mode)
Receiver Type: Triple conversion superheterodyne
Frequency Stability: ±0.001%
Front End Bandwidth:
VR Master: 50 MHz @ -3 dB
VRS Module: 30 MHz @ -3 dB
VRT Module: 11 MHz @ -3 dB
Sensitivity (20 dB Sinad): 0.9 uV
AM Rejection: >60 dB, 2 uV to 1 Volt
Image and Spurious Rejection: 85 dB
Third Order Intercept: VRS:+0 dBm, VRT: +6 dBm
Diversity Methods: Switched, ratio and frequency
FM Detector: Digital pulse counting detector @ 300 kHz
Audio Performance (overall system):
Frequency Response: 32 Hz to 20 kHz (+/-1dB), overall system (400 Series mode)
THD: 0.2% (typical) (400 Series mode)
SNR at receiver output (dB) (in Hybrid operating mode):
SmartNR No Limiting W/ Limiting
OFF 103.5 108.5
NORMAL 107 111.5
FULL 108.5 113
LCD: 122x32 graphical display
Power Requirements: 10 to 18 VDC; 12 W max., (1.2 A at 10 VDC to .67 A @18 VDC)