NTP Technology Penta 721s User manual

Doc no. 721-8102-A-4 Rev. date 210106 Page 1 of 11
Installation Guide
Penta 721s
Modular Audio Router & Interface
Contents
GENERAL DESCRIPTION. 4
Operation 5
Rear panel layout. 8
Card slot for optional Penta Cards 9
Dual SFP I/O mini-module 9
Terminal Connections. 10
ELECTRICAL SPECIFICATIONS. 11
MECHANICAL DIMENSIONS: 11
ENVIRONMENT SPECIFICATIONS. 11

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 2 of 11
WARNING – when using electric products, basic precautions should be followed, including the following:
Read all of the safety and installations instructions and explanation of graphic symbols before using the
product.
1 Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in
accordance with the manufacturer's
instructions.
8. Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce
heat.
9. Do not defeat the safety purpose of the
polarized or grounding-110 to 125V type plug
according to UL 817 and CSA C22.2 no. 42. A
polarized plug has two blades with one wider
than the other. A grounding type plug has two
blades and a third grounding prong. The wide
blade or the third prong are provided for your
safety. If the provided plug does not fit into
your outlet, consult an electrician for
replacement of the obsolete outlet.
10 Protect the power cord from being walked on
or pinched particularly at plugs, convenience
receptacles, and the point where they exit
from the apparatus.
11 Only use attachments/accessories specified
by the
12. Use only with the cart, stand, tripod, bracket,
or table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use
caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13 Unplug this apparatus during lightning storms
or when unused for long periods of time.
14 Refer all servicing to qualified service
personnel. Servicing is required when the
apparatus has been damaged in any way,
such as power-supply cord or plug is
damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does
not operate normally, or has been dropped.
DANGER
Improper connection of the equipment-grounding can result in a risk of electric shock. Do not modify
the plug provided with the product – if it will not fit the outlet have a proper outlet installed by a
qualified electrician. Do not use an adapter which defeats the function of the equipment-grounding
conductor. If you are in doubt as to whether the product is properly grounded, check with a qualified
serviceman or electrician.
IMPORTANT SAFETY INSTRUCTIONS
READ AND KEEP THESE INSTRUCTIONS

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 3 of 11
The product must be grounded. If it should malfunction or breakdown, grounding provides a path of
least resistance for electric current to reduce the risk of electric shock. This product is equipped with a
power supply cord having an equipment-grounding conductor and a grounding plug. The plug must
be plugged into an appropriate outlet which is properly installed and grounded in accordance with all
local codes and ordinances.
WARNING
This product, either alone or in combination with an amplifier and speakers or headphones, may be
capable of producing sound levels that could cause permanent hearing loss. Do not operate at a
high volume level or at a level that is uncomfortable. If you experience any hearing loss or ringing
in the ears, you should consult an audiologist.
The product should be located so that its location or position does not interfere with its proper
ventilation.
The power-supply cord of the product should be unplugged from the outlet when left unused for a
long period of time. When unplugging the power supply, do not pull on the cord, but grasp it by the
plug.
Care should be taken so that objects do not fall and liquids are not spilled into the enclosure
through openings.
SERVICE
Do not attempt to service the product beyond that described in the user maintenance instructions.
All other servicing should be referred to qualified service personnel.
The product should be serviced by qualified service personnel when:
1. The power supply cord or plug has been damaged, or
2. Objects have fallen, or liquid has spilled into the product, or
3. The product has been exposed to rain, or
4. The product does not appear to be operating normally or exhibits a marked change in
performance, or
5. The product has been dropped, or the enclosure damaged.

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 4 of 11
General description.
The Penta 721s Modular Audio Router & Interface is a 19” wide, 1RU high modular multi-format router and
interface unit for Digital Audio signals compliant to the formats: AES3, MADI (AES10) and IP audio based on
Dante™. Penta 721s has a total of 8 AES3 I/O (16 mono) channels, two MADI BNC connectors for 64 channels
of I/O, and optionally two SFP modules for either optical or coax MADI connections providing a total of 192 I/O
channels on MADI. The Dante IP audio technology is available on the two Ethernet connectors and provides
64 mono channels of I/O which can be redundant on two connectors. Penta 721s has one expansion slot for
installation of a Penta card. All cards for AX32 and Penta 720 can be installed in Penta 721s.
The digital patch bay of Penta 721s is based on a digital router matrix which can handle the up-to 400 possible
input channels, which individually can be patched to any one or more output channels. The matrix can operate
on all standard sample rates up-to 192 kHz and the matrix will interface data with the sample-rate to which the
Penta 721s is synchronized. The unit is based on synchronous routing so all digital signals must have the
same basic sample-rate. Sample rate conversion is a available for the I/O the digital Penta cards.
Penta 721s is installed with Pro|Mon functionality, which enables low latency (<100 micro seconds) monitoring
and summing with 256 input and 32 output channels.
As standard the basic chassis is equipped with redundant power supplies.
All installation guides and more documentation can be downloaded from www.ntp.dk

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 5 of 11
Operation
The Penta 721s is operated via the Network port using the DADman or Penta manager control program, or via
the NTP Router Control System RCCore, when the unit is a part of an integrated routing system. On the front
panel there are LED indicators showing the status of the unit, and on the rear panel there is “reconfig” button
by which the unit can be set into certain pre-configured modes.
Control software
DADman
For description of the DADman software please refer to the software user guide. DADman can be installed on
Windows or Mac OS X. In order to control the Penta 721s, DADman needs to be connected network-wise to
the unit. When opening the device list you will always be able to see the Penta 721s connected to the network,
along with all other NTP/DAD products if present. You have to make sure that the network configuration is
correct in order to actually control the unit via DADman. You can manage all the network settings for the unit
by right clicking on the unit in the device list
Below is a screen dump of the device list view of the DADman software for Windows. Note that operation will
first be possible when the units has correct IP and Subnet address.
Pentaman
For description of the Penta manager software please refer to the Pentaman software user guide. Note that
when the Penta 721s is a part of an NTP router system, all management of the unit is handled by the control
system.

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 6 of 11
Below is a screen dump of the basic/opening control window of the Penta manager software.
Front panel LED’s
Penta 721s has 3 LED indicators on the front panel. The indicators are Ready, Error and PSU OK. The
function of the indicators are described below.
Ready ON Green LED indicates that the unit is operative, and
all software is loaded and OK.
Ready BLINK Green LED blink indicates that the unit is in reconfig
mode
Error ON Red LED indicates a hardware error on the unit.
This could be an I/O card that is not working, a fan
fault or a PSU error. A detailed indication will be in
device list for the unit in the DADman software or
in the alarm view section of the Pentaman control
software. In normal operation the LED is off.
PSU OK ON Green LED indicates that the power supplies are
OK.
PSU OK BLINK Green LED blink indicates that one of the two
power supply is not OK or absent.

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 7 of 11
Reconfig button
The “reconfig” button is accessed via a hole in the rear panel using a pen or a similar pointed item. Trough the
hole a green LED is visible, which will light up indicating the various reconfig modes of the Penta 721s as a
result of the activation of the “reconfig” button. When Penta 721s is in recovery mode the Ready Led on the
front panel of the unit will blink.
Recovery mode
“reconfig”
push while the
unit is powering
up
Green LED
turns ON
The Penta 721s enters a recovery mode. In this
mode only a basic boot code is operative in the
unit, and new code can be downloaded by the
NTP download software. This mode is used if the
software on the platform for some reason is not
operative.
The IP address of the unit is the one currently
used and stored in the internal EERPOM
“reconfig”
short push
while the unit is
in reconfig mode
and Green LED
is on
Green LED
turns OFF
The Penta 721s remains in reconfig mode as
described above.
The IP address of the unit is however the default
address 10.0.7.20, and IP discovery is set to
DHCP which will change the IP address if a DHCP
server is available in the network
The selection of either of the two recovery modes are fixed after selection. The purpose of the recovery mode
is to download new firmware to the unit running only the fixed internal boot code in a simple default
configuration if download of firmware is not working in normal operating mode of the unit. By enabling recovery
mode with default IP address and network configuration the unit can always be identified on a network via the
default setup. Once download is completed the unit will enter normal operation. Alternatively the unit has to be
re-powered.
Note that the IP address referred to is the IP address of the controller/management interface of the
unit. This is not the IP address of the IP audio interface if a such is installed. This IP address can not
be managed locally on the unit.
Restore defaults
“reconfig”
long push 10 sec.
while the unit is
in normal
operation.
Release reconfig”
button
Green LED
OFF
The Penta 721s enters a restore default mode. In
this mode all setting of the unit is initialized to the
factory programmed defaults.
The IP address of the unit is the one currently
used and stored in the internal EERPOM
When the “reconfig” button is released the
firmware of the unit restarts with the factory default
settings and enter normal operation automatically.

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 8 of 11
Rear panel layout.
Figure 1
Rear panel layout (Figure 1).
1. Mains inlet 1.
2. Mains inlet 2.
3. 4 x AES/EBU input and output. 25 pole D-sub female connector with TASCAM pin-out.
4. 4 x AES/EBU input and output. 25 pole D-sub female connector with TASCAM pin-out.
5. SFP slot for optional MADI SFP module.
6. SFP slot for optional MADI SFP module.
7. Sync input for Word Clock, Video Black Burst or Trilevel (configurable)
8. Coax MADI input and output, 2 BNC connectors
9. Word Clock sync output, BNC connector
10. AES11/AES3 sync. input XLR female connector
11. Network port for Control and for Dante AoIP, primary port, RJ45 connector
12. Network port for Dante AoIP, redundant port, RJ45 connector
13. Reconfigure/initialize switch
14. Slot for optional Penta card

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 9 of 11
Slot for optional Penta Card
One Penta card can be installed in the Penta 721s
1. Remove the top cover of the unit
2. Remove the internal Bracket and the rear Cover plate
3. Slide the Bracket onto the card, and then carefully insert the
card in the backplane connector.
4. Fasten the 2 nuts for the bracket at 2 screws for the panel on
the card
5. Put the top cover back on the unit
Figure 2
Dual SFP I/O mini-module
The Dual SFP optical module, can be installed with one or two “Small
form-factor pluggable” (SFP) transceiver modules.
The SFP modules are standard types which support various types of
optical interfaces with LED or Laser diodes and various wave lengths,
as well as MADI via mini HD BNC connectors..
Each SFP module has a receiver and a transmitter part, and can be
used for MADI audio I/O or the NTP Dual MADI format called “Hotlink”
(only optical).
The right part of the SFP connector is the receiver and the left part is
the transmitter.

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 10 of 11
Terminal Connections.
AES11 sync input XLR connector
Pin 1. TX. +
Pin 2. TX. –
Pin 3. RX. +
AES/EBU input/output 25 pole D-sub connectors.
Female connectors
Female connector for AES/EBU input and output connections
The top connector provides the connection for the first 4 AES/EBU
input and output channels. The low
er connector provides the
conne
ction for the last 4 AES/EBU input and output channels,
providing a total of 8 AES/EBU I/O channels.
Below is listed the
connection for the combined input and output 25
pole D-sub connector. The pinning is according to the p
roprietary
standard by the company Tascam.
Connections channel 1-4 i.e. channel 5-8
Pin no Func. Pin no Func.
1 DOUT 4/8 + 14 DOUT 4/8 -
2 GND 15 DOUT 3/7 +
3 DOUT 3/7 - 16 GND
4 DOUT 2/6 + 17 DOUT 2/6 -
5 GND 18 DOUT 1/5 +
6 DOUT 1/5 - 19 GND
7 DIN 4/8 + 20 DIN 4/8 -
8 GND 21 DIN 3/7 +
9 DIN 3/7 - 22 GND
10 DIN 2/6 + 23 DIN 2/6 -
11 GND 24 DIN 1/5 +
12 DIN 1/5- 25 GND
13 N.C.

User guide Penta 721s Base unit
Doc no. 721-8102-A-4 Rev. date 210106 Page 11 of 11
81
Ethernet, RJ45 connector
Pin 1. TX. +
Pin 2. TX. –
Pin 3. RX. +
Pin 4, 5, 7, 8. NC
Pin 6. RX -
Electrical specifications.
Power consumption, no card installed.............................. 15 VA max.
Power consumption, w. Penta card installed.................... 30 VA max.
Input voltage ..................................................................... 90 – 260 VAC
100 – 240 VAC Nominal, 47 - 63 Hz
Mains fuse, mounted in IEC connector............................. 1 A, T1AH/250V
Safety compliance ............................................................ EN 60950-1:2006/IEC 62368-1
Power supply cord must be min. light sheathed flexible cord according to IEC60227 (designation 60227 IEC
52) and include a protective earth conductor having a green-and-yellow insulation. Cross-sectional areas
min. 3x0.75mm2”
Mains line plug type Correct type acc. to standard
110-125V
.......................................................................................
UL817 and CSA C22.2 no 42
220-230V
.......................................................................................
CEE 7 page VII, SR section 107-2-D1/IEC
83 page C4.
240V
.......................................................................................
BS 1363 of 1984.Specification for 13A
fused plugs and switched and unswitched
socket outlets
Mechanical Dimensions:
Chassis standard .............................................................. 19”, 1 RU
Chassis depth, without connectors mounted.................... 33,0 cm
Chassis body width........................................................... 43,5 cm
Weight, not including optical modules or card ................. 2 kg
Environment specifications.
Operating Temperature .................................................... 0 – 45
0
C
EMC compliance............................................................... EN 55103-1, part 1: emission
EN 55103-2, part 2: Immunity
FCC 47 CFR part 15 (B): emission