NV5128 Multi-Format Router • User’s Guide
7
2. Introduction
Signals Types and Rates
Using Video and Audio References
References are required for proper switching. The following lists input signal formats and if a video
or AES reference is required
.
Mixing Analog and Digital
The NV5128 frame can mix analog and digital signals within a single routing system. For example,
a digital audio input can be routed to an analog audio output. To perform this action the router uses
analog-to-digital (A/D) converters and digital-to-analog (D/A) convertors.
There are two types of A/D and D/A converter cards: one set for audio and one set for video. Ana-
log audio converter cards cannot be mixed with analog video converter cards. The input signals
type
—
audio or video
—
must match the output signal type. For more information on converter
cards, see
The following is a list of audio and video inter-mix options and related delay times.
Input Signal Format
Video Ref. AES Ref.
Analog Audio (Stereo)
**
*
Analog Audio (Mono)
**
*
Synchronous AES Digital Audio (Stereo)
**
Yes
Synchronous AES Digital Audio (Mono)
**
Yes
Mixed Analog and Synchronous AES Digital Audio
**
Yes
Asynchronous AES Digital Audio (Stereo)
**
No
Analog Video (PAL or NTSC)
Yes
No
SD Video
Yes
No
SWB Video
Yes
No
Time Code (Linear)
Yes
No
Machine Control (RS-422)**
Yes
No
*
If possible, connect an external AES 48 kHz reference signal.
**
Video reference is not required for operation, but ensures proper video switching.
Input and Output Options
Delay
Analog audio input and analog audio output
< 1.2 mS
Analog audio input and AES synchronous output
~ 658 µS
AES synchronous input and analog audio output
~ 539 µS
AES synchronous input and AES synchronous output
83.2 µs (4 samples)
AES asynchronous input and AES asynchronous output
< 1 µS
Analog video input and analog video output
< 20 ns
Analog video input and SD output
1 video line
SD input and Analog video output
3 µS
SD input and SD output
< 20 ns
Summary of Contents for NV5128
Page 1: ...User s Guide NV5128 Multi Format Router...
Page 44: ...34 Rev 2 3 14 Oct 08 2 Introduction Active Cards...
Page 92: ...82 Rev 2 3 14 Oct 08 6 Maintenance Obtaining Service...
Page 102: ...92 Rev 2 3 14 Oct 08 8 Glossary Glossary...
Page 106: ...96 Rev 2 3 14 Oct 08 A Part Numbers Power Supplies...
Page 114: ...104 Rev 2 3 14 Oct 08 Index...
