Parallax PDT-NSU-7216-PA-SF-R User manual

Operations Manual
PDT-NSU-7216-PA-SF-R
Revision 1.0 – April 2022

Table of Contents
1. Revision History ..............................................................................................................................................2
2. Abbreviations ..................................................................................................................................................3
3. Safety Information ..........................................................................................................................................4
3.1 General Safety Information ....................................................................................................................4
3.2 Mains Supply ..........................................................................................................................................4
3.3 Fibre-Optic Ports .....................................................................................................................................4
3.4 ‘Hot’ PoE Ports ........................................................................................................................................4
4. Packing List .....................................................................................................................................................5
5. Product Overview ...........................................................................................................................................5
5.1 AI VLAN Mode .........................................................................................................................................6
5.2 AI Extend Mode ......................................................................................................................................6
5.3 AI Power Supply Mode ...........................................................................................................................6
5.4 AI QoS Mode ...........................................................................................................................................6
6. Connectors and Configuration Options ..........................................................................................................7
6.1 LED Indicators .........................................................................................................................................7
6.2 Mode Selection Switches ........................................................................................................................7
6.3 SFP Ports .................................................................................................................................................8
6.4 RJ45 Ports ...............................................................................................................................................8
6.5 GND Terminal .........................................................................................................................................8
6.6 AC Inlet ...................................................................................................................................................8
7. Installation Procedures ...................................................................................................................................9
8. Connection and Setup ................................................................................................................................. 10
8.1 Inspection Checks ................................................................................................................................ 10
8.2 RJ45 Connections ................................................................................................................................. 10
8.3 SFP Connections .................................................................................................................................. 10
8.4 Power Up ............................................................................................................................................. 10
9. Hardware Specification ............................................................................................................................... 11

1. Revision History
Date
Rev
By
Comments
Checked
Date
20/04/2022 01 JF Initial Release SC 22/04/2022

2. Abbreviations
Abbreviation Description
AC Alternating Current
AI Artificial Intelligence
AP Access Point
IEEE Institute of Electrical and Electronic Engineers
IP Internet Protocol
MTBF Mean Time Between Failures
PD Power Device
PoE Power over Ethernet
PSU Power Supply Unit
QoS Quality of Service
SFP Small Form-factor Pluggable
VLAN Virtual Local Area Network

3. Safety Information
3.1 General Safety Information
Only trained and authorised personnel should be permitted to work on this equipment. It is assumed that
those using this guide are competent to work on equipment of this nature and will take appropriate
precautions when working with the fault analysis guide.
Parallax Digital Technologies accepts no responsibility for any injury or loss caused by unsafe or inadequate
working practices, or for work carried out by an unauthorised third party.
To prevent possible danger, damage, and bodily harm when handling the equipment, please observe all
warnings, cautions notices contained in this section.
Failure to heed the following danger, warnings, and cautionary statements could lead to serious injury or
death.
3.2 Mains Supply
The Unit should be mains-fed using the supplied AC Power Lead, which is fitted with a 3A Fuse. If the
device is to be fed from an alternative power source, then the appropriate circuit protection device should
be used to ensure that the supply circuit is interrupted, in the event that a fault in the device causes too
much current to flow into it, causing an unsafe condition.
3.3 Fibre-Optic Ports
This device incorporates Fibre Optic transmission ports – under no circumstance should anyone look
directly into these ports, as this may cause temporary or permanent damage to the users’ eye(s).
3.4 ‘Hot’ PoE Ports
This switch is a Passive PoE device which means that the PoE power is continuously supplied to the RJ45
Connector and there is no handshake process that must complete before power is applied to the ports, as
with IEEE 802.3af and IEEE 802.3at compatible devices. Designers and operators should ensure that all
devices are compatible with this type of connection method.

The output voltage of the PoE ports is fixed at +24VDC to meet the requirements of specific peripherals
and this switch does not provide +48VDC as per the IEEE 802.3af and IEEE 802.3at standards.
4. Packing List
The following items are included in the shipping carton:
 1 x PDT-NSU-7216-PA-SF-R Unmanaged Rackmount 16 Port Passive PoE Switch
 1 x Rackmount Kit
 1 x Mains AC Power Lead
 Operation & Maintenance Manual
 Declaration of Conformity
5. Product Overview
The PDT-NSU-7216-PA-SF-R is an Unmanaged Gigabit AI Passive PoE switch, providing 16 x 10/100/1000 PoE
(Hot +24VDC) ports and 2 x Gigabit SFP ports for connectivity, designed to directly connect to devices such as
IP Cameras, Wireless APs, IP Telephones etc.
A typical application setup can be seen in the following diagram – note the setup shows the 24 Port Version of
this product line:

This PoE Switch has 4 Mode Options available:
 AI VLAN Mode
 AI Extend Mode
 AI Power Supply Mode
 AI QoS Mode
5.1 AI VLAN Mode
With AI VLAN Mode selected, Ports 1-16 are isolated from each other; all ports are only able to
communicate with the Uplink ports when this option is enabled. This can be useful when the network
setup requires multiple clients to connect to a common resource but are specifically not required to
communicate with each other. This can reduce the effect of network storms, and can improve network
security resilience.
5.2 AI Extend Mode
With AI Extended Mode Selected, the effective transmission distance is increased from 100m to 250m, but
the port speeds are reduced to 10Mbps; this limitation does not affect the uplink ports. The AI Extend
Mode is also suitable where the power source is too far away for conventional configurations, but the
bandwidth limitation should not be overlooked when incorporating this feature into network designs.
5.3 AI Power Supply Mode
AI Power Supply Mode allows the switch to check the ports periodically, for network activity. If a port is
not passing traffic for a period of time, the switch will automatically power cycle the PoE supply for that
port. The PD will then reboot and return to a functioning state, if it had failed or locked up. This is an ideal
feature which can be used to automatically manage unstable peripherals, without the need for a site visit
to recycle the device.
5.4 AI QoS Mode
When AI QoS is enabled, all ports will prioritize video and VoIP traffic over other types. For example, in
heavy network traffic, an IP Camera stream will be prioritized over a server backup stream, which may be
essential for security or CCTV systems, where the integrity of the video signals is paramount.

6. Connectors and Configuration Options
Front Panel
6.1 LED Indicators
The Front Panel LEDs display the status of the switch and the associated port connections
as indicated in the table below:
LED Name Colour State Status
PWR Power Green OFF Unit Power Off
ON Unit Power On
LNK Link Green
OFF No Connection
ON – Steady Connection
ON – Flashing Data Tx/Rx
SPD Port Data Rate Green OFF 10/100 Mbps
ON 1000 Mbps
6.2 Mode Selection Switches
The Mode Selection Switches toggle AI functionality modes as follows:
 AI VLAN Mode – Isolates Ports 1-16 from each other for traffic purposes
 AI Extend Mode – Increases effective range to 250 but only at 10Mbps data rate
 AI Power Supply Mode – Monitors ports for device lock up and auto-cycles PoE power
 AI QoS Mode – Prioritization of Video and VoIP traffic under high data throughput conditions
Port Status LEDs
Mode Switches
SFP Ports
RJ45
PoE
Ports
Power LED

6.3 SFP Ports
The Front Panel has 2 x Gigabit SFP Ports, allocated as Port 17 and Port 18, which can accept all standard 1000
BASE-FX SFP Modules, for Uplink Connectivity.
6.4 RJ45 Ports
The Front Panel incorporates 16 x 10/100/1000Mbps Passive PoE Ports (+24VDC) to allow connectivity to a
range of suitable peripherals. PoE Power is provided on the RJ45 pins as follows:
Pins
Type
4/5
+24VDC
7/8
GND
Rear Panel
6.5 GND Terminal
The Unit incorporates an external GND terminal to supplement the Ground Pin on the IEC C14 connector,
to allow units to be connected directly to a GND Busbar when used in Equipment Rack Configurations.
6.6 AC Inlet
The Unit accepts AC Mains Power across the range 100-240VAC via an IEC C14 inlet.
GND Terminal
AC Inlet

7. Installation Procedures
This device may be used on a desk-top or it can be installed in a 19” rack enclosure. Before
installation into a rack enclosure, the 2 x L-Shaped brackets from the kit pack should be fitted
to the sides of the unit as shown in the illustration below.
Once the brackets are securely fitted, the unit should be positioned so that the mounting
holes in the brackets are aligned to the rack holes. The unit should then be secured using
captive fixings, to ensure the device is secured in the rack assembly. Note – if you are using
the rear GND terminal, then you may have to attach your Ground Cable before installing the
unit into the rack, depending upon whether or not your rack has an open rear access panel
or door.

8. Connection and Setup
8.1 Inspection Checks
Please inspect the unit to ensure that there is no damage to the external casing which could cause a
malfunction of the device or cause a safety critical fault. Any damaged units should be returned to Parallax
Digital Technologies for inspection and testing.
Please ensure that the AC lead is correctly fitted and secured, and if an additional Earthing Cable is to be
used, that it is secured onto the GND Connector on the rear of the unit before use
8.2 RJ45 Connections
Ensure all required RJ45 Ports are connected correctly using CAT5e cable or better to the client devices.
Note that +24VDC will be present on the voltage carrying pins continuously, and users should check that all
PoE powered devices to be used are compatible with +24VDC supply voltage.
8.3 SFP Connections
The SFP Ports incorporated into this unit only support Gigabit SFP Modules – it is recommended to use
standard SFP Modules in this product.
Once an SFP Module is fully inserted and locked in place, please ensure the fibre cables are connected to
the correct Tx/Rx points. If using an SFP-RJ45 adapter, then ensure the connecter is fully inserted and
locked into the adapter.
8.4 Power Up
The Unit will automatically power up as soon as AC Voltage is applied to the mains cable. The Power Light
will be illuminated and after approximately 1 second, all of the other LEDs will flash on and off to complete
the initialization sequence. Following this, the Port Status LEDs will display the current state of each of the
ports.

9. Hardware Specification
ETHERNET
Standards
IEEE 802.3 Ethernet
IEEE 802.3u Fast Ethernet
IEEE 802.3ab Gigabit Ethernet
IEEE 802.3x Full Duplex Flow Control
IEEE 802.3af Mode B
–
Passive PoE
IEEE 802.1Q VLAN Tagging
Forwarding and Filtering Rate
14,880pps (10Mbps)
148,800pps (100Mbps)
1,488,000pps (1000Mbps)
4Mbits
10KB
8K
Packet Buffer
Packet Length MAC
Address Table
Exchange Property
Backplane Bandwidth 56Gbps
Packet Forwarding Rate
47.616Mbps
INTERFACE
Wired
16 x RJ45
Optical
2 x SFP 1000 BASE
-
X or 100 BASE
-
FX
PoE
Standard
IEEE 802.3af Mode B
Port
RJ45
Power Pin Assignment
4/5 (+) 7/8 (
-
)
PoE output
+24VDC
PoE Budget
300W Max
ENVIRONMENTAL
Operating
Temperature
0°C to +
50°C
Storage Temperature
-
10°C to +70°C
Relative Humidity
5%
-
95% non
-
condensing
MTBF
500,000 hours
ELECTRICAL
Operating Voltage
100
-
240vac
Power Consumption
15w Without PoE Load
Short
-
Circuit Protection
Auto
-
Reset
Reverse Polarity
Protected
MECHANICAL
Dimensions
440mm x 395mm x 45mm
Weight
3.6kg
Casing
Aluminium
Mounting
Rackmount
–
1U
INDICATORS
PWR
Power
LNK
Link/Activity
SPD
Data Transmission Speed

CERTIFICATION
Electrical Safety
EN 62368
-
1:2020+A11:2020
Emissions
EN 55032:2015+A1:2020
Radiated Immunity
EN 55035:2017+A1:2020
Harmonic Emissions
EN 61000
-
3
-
2:2014
Fluctuations and Flicker
EN 61000
-
3
-
3:2013
Electro
-
Static Discharge
EN 61000
-
4
-
2:2009
Electromagnetic Field Immunity
EN 61000
-
4
-
3:2010
Electrical Fast
-
Transients
EN 61000
-
4
-
4:2012
Surge
EN 61000
-
4
-
5:2014+A1:2017
Conducted Immunity
EN 61000
-
4
-
6:2014
RoHS
IEC 63000:2018
For all technical enquiries regarding this product, please contact our technical support team using the
following email address:
[email protected]o.uk