background image

3257 HD

Series User’s Manual No:  UM

-3257-D2

  Page 12

www.maxcomcorp.com

3.8

External 4.5Mhz Audio Sub-Carrier

The 3257 Series also includes an option for transmitting video, audio and a 4.5Mhz audio sub-
carrier as an external signal.  The figure below depicts the 3257 set up with video, 4 channels
of baseband audio and an external audio sub-carrier channel.  The audio sub-carrier channel
uses a BNC connector with 75 ohm impedance.

+ I + I

G

G

1

2

+ I + I

G

G

3

4

Audio

Video

Audio SC

Video I/O
  BNC
  75 Ohm

Baseband Audio I/O

External Audio Sub-Carrier I/O
  BNC Connector
  75 Ohm

Summary of Contents for MX3257HD

Page 1: ...MX3257HDT 1S 1V 2A ASI SCA 40 Fiber Optic Mux TX 1 Video 2 Audio 1 DVB ASI Singlemode SC APC Connector 40 Km MX3257HDR 1S 1V 2A ASI SCA 40 Fiber Optic Mux RX 1 Video 2 Audio 1 DVB ASI Singlemode SC A...

Page 2: ...perature Operating 0C to 50C Storage 20C to 70C Humidity Operating 10 to 90 RH Storage 5 to 90 RH Input Power Requirements Voltage 90 240 VAC 47 63 Hz 2248 Meridian Ste H Minden Nv 89423 1 877 330 533...

Page 3: ...User s Manual MAX3257HD Series Model MAX3257 4A 3HD 1 VIDEO 4 AUDIO 3 DVB ASI CWDM multiplexer Video Audio ASI Fiber Optic Multiplexing System Installation and User Guide...

Page 4: ...ront Panel Indicator Description 2 3 Rear Panel Indicator Description 3 INSTALLATION 3 1 General Installation 3 2 Power Connection 3 3 Fiber Optic Cables Connection 3 4 Video Connections 3 5 Audio Con...

Page 5: ...connector with the power turned on Exposure to Class IIIb Laser radiation is possible when the external fiber connector is disconnected while the unit is still powered up Ensure the rubber boot is in...

Page 6: ...ex Video and Simplex Audio 2 Channels Simplex Video and Simplex Audio 4 Channels Simplex Video and Simplex Audio 6 Channels Simplex Video and Simplex Audio 8 Channels DVB ASI 1 to 4 channels VIDEO AUD...

Page 7: ...er Link Status MAXCOM 2 2 Front Panel Indicators The following diagram depicts the front panel indicators Link Indicator light off TX Problem with Transmitter RX Problem with Optical link Power Indica...

Page 8: ...2 Page 6 www maxcomcorp com 2 3 Rear Panel Indicators The following diagram depicts the 3257T and 3257R rear panel configuration with optional audio channels installed NOTE Model Depicted is configure...

Page 9: ...unting holes in the sides of the 3257 Make sure that there is enough space to pull and connect both the electrical data and optical cables without stressing them beyond the manufacturer s limitation s...

Page 10: ...ations For MX3257 2HD Service wavelength Tx Output Power Rx Receiver sensitivity Loss in Fiber Video Audio 1310nm 5dbm 30dbm 0 35dbm Km HD Ch 1 1510nm 3dbm 24dbm 0 27dbm km HD Ch 2 1550nm 3bbm 24dbm 0...

Page 11: ...terminated in a BNC connector e g RG 59U with a BNC connector a At the TX end 3257T connect the video source to the VIDEO BNC connector b At the RX end 3257R connect the VIDEO BNC to monitor The outpu...

Page 12: ...The illustrations below show how to connect balanced and unbalanced audio 3 6 Balanced Audio Differential For Balanced audio connections connect the audio lead to the respective audio channel input a...

Page 13: ...output will be 3dB less than input Note DO NOT connect the lead to ground on the audio OUTPUT as this may create noise on the ground which may distort the video signals UnBalanced Audio Input Audio C...

Page 14: ...a 4 5Mhz audio sub carrier as an external signal The figure below depicts the 3257 set up with video 4 channels of baseband audio and an external audio sub carrier channel The audio sub carrier channe...

Page 15: ...erminated in a BNC connector e g RG 59U with a BNC connector The DVB ASI I O will accept ANY PCM signal from 1Mbps to 600Mbps that is less than 1Vp p and is compatible with 75 ohm terminations The DVB...

Page 16: ...sing the power entry module to provide power via an IEC 3 prong cable 2 The indicator POWER on the front panel shows that the unit is properly powered 3 Install the fiber optic cables to the 3257 4 Ve...

Reviews: