AC mains Power, Surge Protection, Grounding | Telos NX12 guide

24 Section 2

ing it from the output to the +5v source on pin 8. An appropriate value is 2.2kΩ.

♦♦ Sink (pull-down) current must be limited to 400mA maximum per output with total output restricted to 1 amp (200mA each output if all five will be used).

If you want to drive a relay, lamp, or high-current LED, you will need an external power source. Connect your external power source negative to Nx12 ground at pin 1 and positive to the relay. The other side of the relay goes to the output pin. (The Nx12’s +5v output is fed through a 100Ω resistor and a 50mA fuse, so cannot source much current.)

2.11 AC (mains) Power

The AC receptacle connects mains power to the unit with a standard IEC (International Electrotechnical Committee) power cord and provides an on/off switch. The power supply has a universal AC input, accepting a range from 100 to 240 VAC, 50-60 Hz.

IMPORTANT SAFETY INFORMATION

Surge Protection

Precautions should be taken to prevent damage caused by power surges. Standard line surge protectors can be used to offer some degree of protection. It is the user’s responsibility to ensure that protection adequate for their conditions is provided.

Grounding

This equipment is designed to be operated from a power source which includes a third ground- ing connection in addition to the power leads. Do not defeat this safety feature. In addition to creating a potentially hazardous situation, defeating this safety ground will prevent the internal line noise filter from functioning.

Image 34

Telos NX12 user manual AC mains Power, Surge Protection, Grounding

Contents

Telos Nx12 We support you Trademarks Telos Systems USA Telos EuropePage Table of Contents Basic Configuration Detailed Configuration & Reference Vii Specifications USA Isdn Ordering Guide Introduction Features & BenefitsWelcome to the Nx12 Why Isdn Makes Sense for Broadcast Talk Show Systems Introduction Two-Studio Modes Step up in Quality and Flexibility Getting Started InstallationConnections to the Telco circuits Isdn Technology Connecting the Nx12 to Analog LinesAlphabet Soup U, S, and NT1 Hunt Groups Data and VoiceSpecial Considerations for Euro-ISDN ETS 300 users Ordering Help Connecting the Nx12 to IsdnIsdn in USA & Canada Using the U Interface Interface Status LEDs Hot Tip Isdn S-interface cable Integration with a PBX Using IsdnUsing Pots USA and Canada Studio Audio Connections Using a modern broadcast console’s mix-minus capabilityMix-Minus ‘Making do’ with an older console Using a production-style console Using a small mixerPhones and Remotes Input To Caller Analog Inputs Analog Input XLR AES Digital Inputs Analog Outputs Output CallerPOH Program on Hold Inputs AES Digital Outputs Desktop Director Ports AES3 Output XLR Call Controller Desktop DirectorExtended Desktop Director Console Director Direct Connection Connecting Desktop DirectorsExtended Distance with Power Supply Multiple Desktop Directors on a Single Port Desktop Director Termination Removal Desktop Director Cable Connections Desktop Director AssemblyEthernet Line Designation Strip Parallel Gpio Remote Control Record Control Outputs See Section Input Characteristics Output Characteristics Surge Protection AC mains PowerGrounding Configuration for Telephone Lines Basic ConfigurationStep-by-Step Analog Phone Line Setup Isdn Setup Basic configuration Is the Isdn working? More Tips Audio Input and Output Levels, Levels, Levels Time to test it out What now? Page User Operation Status Symbol IconsDesktop Director Call is On-Air Column Call is On-Air & Locked Column Line Button Columns Talent ModeProducer Mode Hold & Drop Dialing Keypad Block AllFunction Buttons Record Control Volume MenusLCD Screen and Associated Buttons Menu Navigation Changing Between Producer and Talent Modes Other Menu options Normal Hold Using the Director in Producer ModeAnswering calls Screened Hold Conferencing callers on the handset/headset Using the Director in Talent on-air ModeBlock All Drop and Hold Next Conferencing multiple callers on-air using call lockingUsing the Director as a Telephone Locking VIP calls Call Controller Console Director Level Metering Detailed Configuration & ReferenceFirst Step Status Displays Line Status Connected Desktop Director StatusAccepting Call Activated Web User Interface LCD/Button User InterfaceMenu Navigation & Item Selection Audio Menu Nominal Input Level Phone Send Adjustment Meter ModeNominal Output Level Receive AGC Call DuckingNoise Gate Receive EQ Caller Dynamic Digital EQ Ddeq Mix Minus ModeFeedback Reduction In/multiple out In/1 out AES Mode Channel default Hookflash Telco MenuPots Country Channel CPC loop drop threshold ms Web only Enable Auto Call Drop Web onlyLoop Current Checking Web only Ring-in Before Caller ID Web only For Europe and many other parts of the world Guessing the Isdn Protocol setting in Canada & the USAFor USA & Canada and a few other parts of the world SPIDs and MSN/DNs Web Only MSN Multiple Subscriber Number DN Directory Number System Menu TCP/IP SetupClock Loss To enter IP addresses using the LCD/button interface Show Mode LCD OnlyContrast LCD Only Hold on Select Factory Defaults LCD OnlyReboot LCD Only Audio Loop LCD Only Show Modes Firmware Update Web OnlySingle-studio Modes Sharing the Nx12 Two-studio Modes This option causes the system to be split as follows Selecting a Show using a Desktop Director Selecting a Show using a Console Director LivewireSelecting a Show using a Call Controller Connecting Assistant Producer to a Show Section Quality of Service Axia Consoles Other Uses of the IP/Ethernet Interface Firmware UpdateCall-control Software Windows Telnet Login Telos returnTelnet Help return ? CPC return ? Isdnlog return Send Audio Processing System Signal Flow and Audio ProcessingReceive Caller Audio Processing Noise Gate High-pass ‘hum’ FilterReceive Automatic Gain Control Digital Dynamic Equalizer Feedback Control Section Overview Technical Data & TroubleshootingGeneral Troubleshooting System Software & Firmware Section Status Screen for Isdn troubleshooting Troubleshooting Isdn ProblemsSpid Pending Are you using the Nx12’s internal NT1? USA & Canada only Condition Can’t Get Isdn Ready Indication Is your long-distance carrier OK? Are your SPIDs and Telco setting correct?What does the Isdn Cause phrase say? What is consistent about the problem look for patterns? Condition Intermittent Isdn ProblemsAre the problem confined to incoming call only? Any other Isdn troubleshooting tips? Access to the Main PCB Troubleshooting Desktop Director ProblemsFuse Replacement Replaceable Modules and Hardware Servicing Isdn Cause Phrases/Values Class 1.1 normal Cause No Prefix 1 not dialed DMS Custom only Cause No Call is proceeding/PreemptionCause No Preemption, reserved Cause No Excessive Digits Received, call is proceeding Cause No Destination out of order Class 1.2 resource unavailableCause No Non-selected user clearing Cause No No circuit available circuit/channel congestion Class 1.3 service or option not available Class 1.4 service or option not implemented Class 1.6 protocol error e.g. unknown message Class 1.5 invalid message e.g. parameter out of range Cause No Protocol Error, unspecified Cause No Invalid information element contentsCause No Timeout disconnect Recovery on timer expiration Cause No Message type non-existent or not implemented Class 1.7 interworking class Cause No Bearer service unavailable VN 4 onlyCause No Switch to conversation mode VN 4 only Cause No SW56 disconnect Internetworking, unspecified Section General SpecificationsProcessing Functions Audio Switching Matrix and ConferencingAudio Performance Desktop Director Ports Isdn Telephone Line ConnectivityAnalog Telephone Line Connectivity Control Ports Four-Column/Four-Hybrid Mode Euro Operation Mode Specifications Page Warranty and Application Caution Telos Nx12 Limited WarrantyPage A1 USA SPIDs by Telco Nextlink/XO Century TelephoneCincinnati Bell Fort Mills Telephone Sprint/Centel Quest- See US West Rochester TelephoneSouthwestern Bell Standard Telephone GA 102 Bit Error Rate Test-See Bert A2 Telephone Terminology Guide Calling Party Control- See CPC Circuit Switched Data- See CSD Appendix Extended Superframe. See ESF Interexchange Carrier- See IEC Listed Directory Number- See LDN Appendix Regional Bell Operating Company- See Rboc Superframe- See SF Guide to telephone terminology Appendix Details, Details A3 USA Isdn Ordering GuideDealing with the Phone Company Protocols Directory Number DN SPIDsCSD and CSV Terminals and Terminal Types Faxable Isdn Order Form for the USA & CanadaNT1s IOC Capability Packages provisioning package Isdn BRI Line Order Protocol National ISDN-1 CO Values Protocol AT&T Point-to-Point Custom Names A4 Euro-ISDN Ordering GuideMultiple Subscriber Numbers MSN Faxable Isdn Order Form for Euro ETS Line Deactivation ETS-300 Euro-ISDN Telos Nx12