4 Channel Digital Video Recorder

Blonder Tongue Catv Channelized Audio/video Modulator With Saw Filtering (channel 48)

Product Code: ga70240
Availability: In Stock

$449.85 $652.28

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The CATV Channelized Audio/Video Modulator, Channel 48, from Blonder Tongue is an all-solid-state audio/video modulator that provides a modulated visual and aural RF carrier output on one specific CATV channel. The unit modulates the audio and video inputs and provides the requested RF CATV channel output for use in a CATV, MATV or SMATV system. The modulator accepts standard (sync negative) polarity video at a 0.7-2.5V peak to peak level from sources such as a TV camera, video tape recorder, TV demodulator or satellite receiver.

The modulator features a +55dBmV RF output level, and an IF SAW filtering for adjacent channel operation. All aeronautical channels are offset positive with a tolerance of ±5kHz as required by FCC 21006. All level controls are located on the front panel. The RF level control provides up to +55dBmV output. The video modulator control sets the depth of modulation for 87.5% over an input video level range from 0.7VP/p to 2.5VP/p. An audio modulation control permits adjustment for ±25kHz peak deviation of the aural carrier.

RF Specification
Frequency Range	CATV channel 48
Output Level	55 dBmV, minimum
Output Level Range	15 dB
Audio/Video Carrier Ratio Control	-7 dB to -20 dB
Frequency Tolerance	±10 kHz standard channels, ±5 kHz FCC 21006 offsets
Audio Carrier Frequency Setting	±1 kHz maximum, 4.5 MHz above video carrier
RF to Video Response	1 dB P/V from Fv -0.5 MHz to Fv +4.2 MHz
Broadband Noise	-90 dBc
Spurious Output	-60 dBc in 50 to 860 MHz Range @ +55 dBmV output
Output Match (Return Loss)	12 dBc
Vestigial Sideband Response	@ channel edge -20 dB, @ adjacent channel -40 dB
Video
Input	0.7 to 2.5 V peak to peak for 87.5% modulation
Input Return Loss	18 dB
Carrier-to-Noise Ratio	62 dB in 4 MHz bandwidth
Hum Ratio	60 dB peak to peak video to 60 Hz RMS
Differential Gain	5% at 87.5% modulation
Differential Phase	5° at 87.5% modulation
Group Delay	170 ±50 nS
Audio
Input Impedance	10 kΩ, unbalanced
Input	140 mV RMS for 25 kHz peak deviation
Frequency Response	±1.0 dB (50 Hz - 15 kHz referent to standard 75 msec pre-emphasis)
Intercarrier Stability	4.5 MHz at ±5.0 kHz
General
Power Requirements	105 - 130 VAC, 60 Hz, 10.5 W
Temperature Range	0 to +50°C
Connectors
Audio In	F-type female
Video In	F-type female
RF Output	F-type female
RF Output Test	F-type female -30 dB
AC Outlet	Female AC outlet 600 VA maximum
Mechanical
Line Cord	6' power cable: 3 wire grounded, 3 wire convenience outlet
Dimensions	19 x 1.75 x 3" (48.26 x 4.44 x 7.62 cm)
Weight	4 lb (1.8 kg)

Meets FCC docket 21006 aeronautical frequency offset requirements

Fully compatible with BTSC encoded stereo audio

Front panel accessible level controls for easy set-up and adjustments

AC outlet

Related Questions and Answers

Q: 1. what is a Polsen audio interface?

A: This devices allows connection of your XLR microphone to the USB input of your computer for recording purposes.

Q: 2. What is the source of the 48v phantom power for the mic?

A: The power comes from the computer when you plug the interface into it. You have the option of turning the phantom power on or off as needed for your mic.

Q: 3. Can I use this to connect the 2 line XLR outputs from a Sound Devices Mix Pre-D to the Sound Devices 633 TA3 inputs?

A: The Remote Audio CA744INL Dual XLR to Dual TA3 Channel 3/4 Input Cable can be used to connect the 2 line XLR outputs from a Sound Devices Mix Pre-D to the Sound Devices 633 TA3 inputs.

Q: 4. Does this work directly with macs?

A: This is Mac OS compatible.

Q: 5. Which year produce this model?

A: Roland released this product in 2018.

Q: 6. Why is the headphone output of the mic so low but the system audio normal?

A: The headphones you are using with the XLR-USB-48 may require more power which can be achieved by using a headphone amplifier such as the Polsen HPA-4X2 (B&H # POHPA4X2) to provide more volume. You can find additional options for headphone amps listed under the "Accessories" tab.

Q: 7. which norm handles? pal-B/G pal-N or NTSC? thanks.

A: The Blonder Tongue CATV Channelized Audio/Video Modulator with SAW Filtering SAW is NTSC only.

Q: 8. Will this work with an Android or iPhone recording program?

A: The Polsen XLR-USB-48 XLR to USB Audio Interface is intended for use with computers running Mac OS or Windows. It is not intended for use with mobile devices like Android smartphones or iPhones.

Q: 9. What kind of USB cord is needed with this?

A: There is a USB cable included with the XLR-USB-48 which is USB Type-A to mini-USB. If you need a replacement, you can use the Pearstone USB 2.0 Type A Male to Type B Mini Male Cable (Black) - 3' (B&H # PECUAMUMBM3).

Q: 10. is this brand new?

A: This would be new in a box not used or refurbished.

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