Grass Valley NV5128 v.2.5 - Manual (Page 15)

NV5128 Multi-Format Router • User’s Guide 5
2. Introduction
Signals Types and Rates
Figure 2-1 shows the power supply architecture.
Figure 2-1. PS6000 Power Supply Module Diagram
Fuses
A fuse for the AC power inputs is located on the PS6000 power supply modules. When a NV5128
is ordered, fuses appropriate for the line voltage in use at the country of destination are installed on
the PS6000 power supply modules. Be sure to check the fuse ratings for compliance with specific
requirements in your area. An 8A fuse (part number HB0145-00) is required for 90–130
VAC appli-
cations. For 180–250 VAC operation, a 6.3A fuse (part number HB0031-00) is required.
The fuses are “slow blow” and designed to blow if there is an ongoing power issue, but not if there
is a single, minor spike in the power flow. For information on replacing fuses, see
Fuse Replace-
ment on page 76.
Cooling
There are four low-speed fans located along the front edge of each PS6000 power supply module.
Each fan pulls a small quantity of air across internal heat sinks.
Signals Types and Rates
The NV5128 supports several signals within a single router. Supported audio signals are analog,
AES synchronous and AES asynchronous. Supported video signals are analog, SD, and SWB (SD
and HD combined). Also supported are SMPTE longitudinal time code and machine control sig-
nals.
Incoming audio analog signals are converted to digital with a sample rate of 48kHz for internal
routing and can be distributed externally as digital audio outputs. Conversely, incoming digital
audio signals can be converted and distributed externally as analog audio outputs. In addition, all
stereo signals are separated into left and right channels for switching as mono signals. Mono chan-
nels can be recombined to create new stereo signals. This unique architecture allows for cross-con-
version between analog and synchronous AES signals within the same frame.
Analog and digital video signals can be intermixed with any other supported video format (analog,
SD or SWB) while maintaining a high level of analog video performance, effectively replacing
many single format routers already in use.
Signal Rates
The following table lists the sample rates and how many signals at each rate an input card or output
card can support. Each signal type requires a specific input card or output card. For a description of
each card and corresponding card part numbers, see
Active Cards on page 21.
Power Sense
and Limiting
AC Input, Fuse,
Rectifiers, and Filter
Power Factor
Correction
+48VDC
Regulators (×5)
+48VDC
Out (×5)
90–130VAC or
180–250VAC In