JPS NXU-2B Installation And Operation Manual Download

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Interoperability Now!

INTEROPERABILITY NOW

Installation and Operation Manual

NXU-2B

Network Extension Unit

JPS Interoperability Solutions

5800 Departure Drive

Raleigh, NC 27616

919-790-1011

Email:

[email protected]

www.jpsinterop.com

JPS P/N 5190-200200 Revision 1.5 August 2020

Summary of Contents for NXU-2B

Page 1: ...ion and Operation Manual NXU 2B Network Extension Unit JPS Interoperability Solutions 5800 Departure Drive Raleigh NC 27616 919 790 1011 Email sales jpsinterop com support jpsinterop com www jpsintero...

Page 2: ...to make changes to the equipment and specifications without prior notice CAUTION Changes and modifications to this equipment not expressly approved by JPS Interoperability Solutions could impair prope...

Page 3: ...3 2 5 1 Internal Jumper Configuration 2 4 2 5 2 E M Return Selection 2 5 2 6 POWER REQUIREMENTS 2 5 2 7 INSTALLATION CHECKLIST 2 5 2 8 REAR PANEL CONNECTORS 2 6 2 8 1 DC Input Connector 12 VDC INPUT 2...

Page 4: ...4 10 COR and VOX Settings 3 13 3 4 11 Duplex Setting 3 13 3 4 12 VOX Hang Time 3 14 3 4 13 COR Inhibit Time 3 14 3 4 14 Voice Compression Settings 3 14 3 4 15 Security Settings 3 15 3 4 16 Ethernet M...

Page 5: ...O CABLES 6 3 6 3 RADIO INTERFACE TROUBLESHOOTING TIPS 6 4 6 3 1 Symptom User in Field Complains of Missed First Syllables 6 4 6 3 2 Symptom User in Field Complains of Missed Syllables Mid Conversation...

Page 6: ...ONFIGURATION JUMPERS 2 4 FIGURE 2 3 DTE VERSUS DCE SERIAL CABLES 2 9 FIGURE 3 1 NXU 2B CONFIGURATION PAGE 3 2 FIGURE 4 1 NXU 2B CONNECTION MANAGEMENT SCREEN 4 3 FIGURE 5 1 WEB ACCESS WITH PASSWORD PRO...

Page 7: ...al Area Network A group of computers and associated devices that share a common communications line typically within a small geographic area PTT Push To Talk A control signal to a radio transmitter th...

Page 8: ...NXU 2B Operations Manual viii blank page...

Page 9: ...s radios and JPS products such as the ACU 1000 Interconnect Unit This general purpose stand alone device interfaces full duplex audio one RS 232 port and three status bits onto an Ethernet network A p...

Page 10: ...tails The NXU 2B is a 10 100BASE T Ethernet device and each unit has a unique Ethernet address and an RJ 45 physical interface jack A 10 100BASE T device operates at either 10 or 100 Mbps and intercon...

Page 11: ...Maximum Sink Current 100 mA for open drain 300 mA for PTT relay Max Open Circuit Voltage 60 VDC for open drain 100 VDC for PTT relay Serial Interface Interface Type RS 232 Asynchronous Full Duplex Bau...

Page 12: ...uipment Not Supplied Table 1 3 Optional Equipment Not Supplied Description JPS P N Operation Maintenance Manual printed and bound Note This manual may be downloaded from the jpsinterop com website at...

Page 13: ...transformer coupled balanced audio for both input and output audio The NXU 2A only had balanced input audio and single ended output audio The NXU 2B audio input and output levels are electronically a...

Page 14: ...a radio or other communications device to transmit the audio signal being sent to it Full Duplex Communication System Users can simultaneously talk to and listen for example a standard telephone call...

Page 15: ...ivated Additionally any RS 232 data received on one device is also sent over the network and is transmitted from the RS 232 port of the second device This is the essence of the Network Extension Unit...

Page 16: ...interoperability gateways also includes RoIP interfaces and therefore the NXU 2B can be used to interface radios and other 2 4 wire devices to them The ACU Z1 modular gateway shown in the upper left c...

Page 17: ...gure 1 5 Single NXU 2B Connects a Radio Channel to a JPS VIA PTToC Channel Just as its predecessor the NXU 2A did the NXU 2B can be used to connect a radio channel to a variety of Push To Talk over Ce...

Page 18: ...NXU 2B Operations Manual 1 10 End of Section One...

Page 19: ...l Numbers Shipping Agency Date s of Shipment The JPS Customer Service Department can be reached by phone at 919 790 1011 Upon receipt of this information JPS will arrange for repair or replacement of...

Page 20: ...or or other knowledgeable person if you are unsure about how your network is configured The following six steps are needed to properly install the NXU 2B 1 Determine the IP address subnet mask and if...

Page 21: ...rotected from exposure to salt spray When the unit is mounted in a cabinet with other heat generating equipment the use of a rack blower is suggested to keep the cabinet interior temperature rise to a...

Page 22: ...ions the default jumper settings are sufficient and need not be changed Figure 2 2 NXU 2B Internal Configuration Jumpers Table 2 1 NXU 2B Jumper Settings Default Settings in Bold Text Jumper and Funct...

Page 23: ...oltage above this range The DC power consumption is 500 mA maximum The AC adapter provided with the unit meets these specifications The NXU 2B is a microprocessor controlled device As with any such eq...

Page 24: ...S ACU 1000 Intelligent Interconnect system to be used with the NXU 2A It provided a crossover of transmit and receive audio as well as COR and PTT control signals You do not need this adapter on the N...

Page 25: ...high or active low In the active low configuration the input is pulled up to 5V DC internally through a 47K ohm resistor In the active high configuration the input is pulled down to ground through a...

Page 26: ...devices you may need a DB 9 male male null modem cable also called a crossover cable RS 232 serial devices are divided into two types Devices which provide control information are called DTE Data Term...

Page 27: ...Cable RS232 Null Modem Cable RS232 Null Modem Cable RS232 Straight Through Cable RS232 Null Modem Cable DTE Device DTE Device DTE Device DCE Device DCE Device DCE Device COMP NXU 2 NXU 2 ACU 1000 J4...

Page 28: ...NXU 2B Operations Manual 2 10 End of Section Two...

Page 29: ...2 168 1 200 Subnet Mask 255 255 255 0 Gateway IP 0 0 0 0 If the above network parameters are compatible with your network then you may attach the NXU 2B to your network and use your web browser to con...

Page 30: ...entering a number or entering text to give the NXU 2B a specific name No changes are enacted until the Save Changes button is pressed Any changes not yet enacted can be reverted back to previous via...

Page 31: ...gateway address set at the default address 0 0 0 0 3 3 4 Unit is a Client or Server Sets this NXU 2B to function either as a Client or as a Server A Client is able to make or break connections with Se...

Page 32: ...ing technique that allows IP packets to be sent simultaneously from a single source to multiple destinations Rather than sending the packet to each destination independently the packet is sent to a mu...

Page 33: ...for voice or tone signaling Offers the highest audio quality of all compression methods but provides the least compression This is the default setting 3 3 10 VoIP QOS DSCP Value QOS stands for Quality...

Page 34: ...f COR Sense is set to either VOX or VMR Options are Low Medium and High A lower setting means that a smaller amount of audio for VOX or human speech content for VMR will be required for the incoming a...

Page 35: ...cations this is required or helpful but in other applications this may not be desirable For example if the system echoes back the transmitted audio to provide sidetone monitoring the resulting audio w...

Page 36: ...that occurs just after the NXU s TX output command is de activated The unit ignores the COR input whether hardwired or VOX only in the specified interval immediately following the inactivation of its...

Page 37: ...on Using an RS 232 Terminal Program If you are configuring via Serial Port you will need a terminal program to communicate with the NXU 2B Any suitable Windows terminal program such as PuTTY Tera Term...

Page 38: ...his is a full list of the commands available in the NXU 2B command mode More detail is given on the following pages You can get a one line summary of each command by typing HELP followed by the comman...

Page 39: ...rt number Set the port where to send VOIP traffic STAT Return this client s current connection status STOP 1 2 Set the serial port stop bits SUBNET ip address Set IP subnet mask for this unit TRAN Pla...

Page 40: ...igned by the DHCP server is not generally known and is subject to change If DHCP is to be used it should only be used on client NXU 2B units 3 4 7 Setting VoIP Port Optional The port used by the NXU 2...

Page 41: ...o from the NXU 2B Select the polarity of the COR input by using the COR command COR 0 selects active low COR while COR 1 selects active high COR sense COR 2 selects VOX mode In VOX mode no connection...

Page 42: ...t momentarily This momentary Radio 2 active COR signal causes Radio 1 to switch momentarily to TX mode and when it quickly drops back out of the TX mode its own COR output is momentarily activated Thi...

Page 43: ...ces it may be desirable to limit access via one or both of these methods or to selectively limit the things that may be done remotely The SECURITY command allows various levels of security to be set i...

Page 44: ...t provide a separate COR signal VMR provides a more robust method of COR Sensing than VOX alone VMR mode may be selected via the web interface COR Sense field pulldown menu When VMR mode is chosen the...

Page 45: ...nel for VoIP and status bit traffic No serial traffic is exchanged It can be used whenever more than two units wish to hear each other s audio The NXU 2B communications mode can be set using the BCAST...

Page 46: ...have been made SAVE must be typed in order to store the new settings in memory The NXU 2B will automatically restart after changes have been saved If you do not make any changes and want to return the...

Page 47: ...her the NXU 2B does not have an active VoIP connection or the connection has been lost 4 2 3 Channel Active LED This green LED is lit whenever COR is active This also indicates that the NXU 2B is send...

Page 48: ...he unit expects and operates best with an input of 0dBm Likewise selecting a value for the TX output level means that the NXU 2B will produce that level as its nominal output level assuming that the r...

Page 49: ...is capable of sinking 100 mA Note These auxiliary I O lines are designed for switching and control applications and do not have quick enough response times to send or receive data 4 5 Controlling Con...

Page 50: ...ewed by typing STAT STAT returns the following responses CON IP address The unit is connected to an NXU 2B at address IP address DIS The unit is not connected ATT IP address The unit is attempting a c...

Page 51: ...s Setting security to 96 64 32 allows the connection status to be monitored by HTTP but no configuration or connection changes may be made via HTTP Setting security to 24 8 16 disables telnet access a...

Page 52: ...sing a web browser Once you have entered the username and password you will not need to enter it again unless you exit your web browser Note 1 To provide an extra layer of security the security level...

Page 53: ...JPS equipment in tandem with the cable Just as importantly it lists any radio programming or switch level jumper plug settings required at the radio for proper operation JPS cables are always the best...

Page 54: ...dio transmitter Audio coming from the donor radio when doing a normal voice volume radio count should be heard in the companion radio at the same level as received conversations from other radios in t...

Page 55: ...a Radio Channel where the COR indication or detection occurs late and initial incoming syllables are therefore clipped The NXU 2B is designed to prevent this as well as practical through proper design...

Page 56: ...en it should Solution Decrease VOX VMR SENSITIVITY make it more sensitive Alternative Solution Verify that RX audio level is sufficiently high a talker at normal level should cause flashing of the Aud...

Page 57: ...uch as commonly used by aircraft or HF single side band radios They typically lack a Hardware COR output and high noise level causes VOX to false on the noise Solution Change COR SENSE to VMR 6 3 7 Sy...

Page 58: ...erver units are properly configured and online but LINK ACTIVE is not on Verify that both the Client and Server NXU 2B units are visible on the network by pinging their IP addresses from a network con...

Page 59: ...h or excessive latency on the network by running a trace route from a network connected PC to the NXU 2B at the other end of the link Cannot browse to the NXU 2B s IP address Check that your computer...

Page 60: ...NXU 2B Operations Manual 6 8 End of Section Six...

Page 61: ...re by clicking the Software Update button You will see the following page Figure 7 1 Firmware Upload Click on Browse and browse to the location on your computer where you saved the firmware image The...

Page 62: ...NXU 2B Operations Manual 7 2 End of Section Seven...

Page 63: ...ication does not provide a COR line What should I do COR is usually obtained from a radio and indicates that a signal is being received If you do not have a COR line or a line that performs this funct...

Page 64: ...ere are only about 4 billion IPv4 addresses available On the surface that would appear to be enough but some companies use a lot of them the military uses a lot of them and all the millions and millio...

Page 65: ...ed from outside the firewall Should I use a firewall with the NXU 2B Strictly speaking from the standpoint of the NXU 2B there is no reason to use a firewall with the NXU 2B The NXU 2B is a stand alon...

Page 66: ...installing a pair of NXU 2B s the LINK ACTIVE light comes on stays on for about 20 seconds and then goes out This cycle repeats endlessly What s going on The most likely cause is a firewall which is...

Page 67: ...properly The solution is to ground one side of the NXU 2B balanced input I ve connected my radio to the NXU 2B and it works but the audio sounds very tinny and doesn t have much bass Make sure you hav...

Page 68: ...NXU 2B Operations Manual 8 6 End of Section Eight...

Page 69: ...aults 3 16 DHCP vii 3 12 DSP vii DTE Versus DCE Serial Cables 2 9 Duplex Setting 3 13 E Equipment and Accessories Supplied 1 4 Ethernet MAC Address 3 15 F Factory Defaults 3 16 Front Rear Views 2 3 Fr...

Page 70: ...Configuration 3 9 Serial Port Settings 3 13 Setting Unit IP Address 3 12 Specifications 1 3 T TCP vii Telnet Control 4 3 TX Delay 3 7 3 16 U UDP vii Unpacking and Inspection 2 1 V VMR 3 16 Voice Comp...

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