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Related Manuals for Comrex STAC
Summary of Contents for Comrex STAC
- Page 1 Product Manual...
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Page 2: Table Of Contents
STAC MANUAL AboUT CoMrex WArrANTy ANd diSCLAiMer CopyrighT NoTiCe i. iNTrodUCTioN STAC FeATUreS WhAT CoMeS WiTh STAC ii. MAiNFrAMe diAgrAMS ANd iNSTALLATioN phoNe LiNe CoNNeCTioNS phoNe LiNe piNoUTS xLr piNoUTS dip SWiTCheS iii. CoNTroL SUrFACe diAgrAMS ANd iNSTALLATioN bASiCS CoNFigUrATioN... - Page 3 USiNg STAC ip WiThoUT A MoUSe iNdiVidUAL LiNe CoMMANdS gLobAL CoMMANdS eSCApiNg CoMMANd Mode preMATUreLy oTher FUNCTioNS ASSoCiATiNg STAC ip WiTh A CoNTroL SUrFACe ChANgiNg The STAC ip pASSWord TroUbLeShooTiNg reMoTe STAC ip deLiVeriNg STAC ip oUTSide The LAN eNViroNMeNT...
- Page 4 Vi. STAC hybrid SeTUp ANd operATioN STAC bLoCK diAgrAM AboUT hybridS iN geNerAL AboUT The STAC hybridS TeLephoNe SepArATioN/NULL AUToMATiC gAiN CoNTroL AUToMATiC Mix-MiNUS CALLer CoNTroL AboUT Mix-MiNUS bUiLdiNg A Mix-MiNUS opTioN A - CoNSoLe proVideS TeLephoNe bUS or AUdiTioN bUS...
- Page 5 CoNForMiTy For TerMiNAL eqUipMeNT - iN ACCordANCe WiTh iSo/ieC gUide 22 eC deCLArATioN oF CoNForMiTy For r&TTe direCTiVe regULATory iNForMATioN ix. AppeNdix b - CoNNeCTiNg AN exTerNAL hybrid To STAC x. AppeNdix C - CreATiNg A prodUCTioN/NeWS exTeNSioN To STAC iNTrodUCTioN reqUireMeNTS...
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Page 6: About Comrex
Each unit we ship has been individually and thoroughly tested. Comrex stands behind its products. We promise that if you call us for technical assistance, you will talk directly with someone who knows about the equipment and will do everything possible to help you. -
Page 7: Introduction
(1) Warranty card (Please fill out and return.) *The STAC system is delivered as a six or twelve-line model. A six-line STAC (STAC6) can be upgraded to a twelve-line STAC (STAC12) with one additional telco board and a sidecar for the control surface to allow line control for six more... -
Page 8: Mainframe Diagrams And Installation
MAiNFrAMe diAgrAMS ANd iNSTALLATioN 11 12 reAr pANeL diAgrAM ANd deSCripTioNS AC Input - This is an IEC style connector for the main power. STAC works on worldwide AC power at 115VAC or 230VAC. Serial Port - This port is currently not used. -
Page 9: Phone Line Connections
(Pair 4 is unconnected.) The use of the Loop-Thru connections is optional. If used, the Loop-Thru connections will provide access to each designated telephone line when STAC is not using it. Also, STAC can be set to disable line access when a Loop-Thru device is active on that line. (See page 11 for more information.) Comrex sells a “STAC Breakout Box Kit”... -
Page 10: Phone Line Pinouts
1/4/7/10 Ring 3/6/9/12 Ring Unused Unused xLr piNoUTS STAC audio connections are balanced professional level inputs and outputs. All XLRs are pinned as follows: TAbLe 2 - xLr piNoUT Pin 1 Ground Pin 2 Audio + Pin 3 Audio -... - Page 11 FroNT pANeL diAgrAM ANd deSCripTioNS INPUT HYBRID 1 HYBRID 2 1 2 3 4 5 6 7 8 Input Indicator - This indicates the Send Input level, or the level of audio sent to callers when On Air. This indicator should be green during typical audio. It will light amber when the system is approaching its limit and red when the system is clipping.
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Page 12: Dip Switches
(for instance, a talk-show host) to dynamically control the level of the incoming caller audio. This not only enhances the perceived trans-hybrid loss of STAC but also allows the studio host to control the conversation, since he or she can more easily “talk over” the callers. - Page 13 STAC until the downstream device goes on-hook. Note: When the STAC has taken a line “off hook”, it is always disabled at the Loop-Thru jack. Auto Disconnect Disable ON = Lines must be dropped manually by control surfaces or STAC IP.
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Page 14: Control Surface Diagrams And Installation
100 feet. Before setting up a control surface for use with STAC, you must determine whether the surface will be used as a Screener or a Studio surface. The major differences are listed below: Only Studio control surfaces can put calls On Air. - Page 15 Top VieW diAgrAM ANd deSCripTioNS Handset - Used to screen incoming calls and to make outgoing calls. Dial Pad - Used to send touch tone dialing to the phone line selected. Aux/Next - Depending on DIP switch settings, can be used to trigger an external device via contact closure (Aux function) or to select the next call to put On Air (Next Function).
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Page 16: Configuration
STAC mainframe control ports. CoNFigUrATioN The STAC control surface is configured via six DIP Switches on the rear panel (shown as #11 of the Rear View diagram above). Each control surface connected to STAC may be configured independently. The DIP Switches are... -
Page 17: Dip Switch Settings
ON = Screener surface. OFF = Studio surface. STAC control surfaces are provided with a removable and reversible legend that shows the functions of the line buttons in each of the two available modes. Make sure the legend follows the setting for DIP Switch 1. - Page 18 TAbLe 3 - CoNTACT CLoSUre ANd AUx/NexT dip SWiTCh SeTTiNgS Dip Switch 2 Dip Switch 3 Contact Closure and Aux/Next Function Latching Manual Closure Defaults to Open. Toggles between Closed and Open when Aux/Next button is pressed. (Button has no effect on line status.) Momentary Manual Closure Closed when Aux/Next button is pressed.
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Page 19: Control Surface Operation
CoNTroL SUrFACe operATioN SCreeNer CoNTroL SUrFACe Each of STAC’s six or twelve lines can be in one of several states. Table 4 shows these states and the resulting indications: TAbLe 4 - SCreeNer STATeS/iNdiCATioNS Line State Button Color Cadence Note... -
Page 20: Studio Control Surface
STUdio CoNTroL SUrFACe Each of STAC’s six or twelve lines can be in one of several states. Table 5 shows these states and the resulting indications: TAbLe 5 - STUdio STATeS/iNdiCATioNS Line State Button Color Cadence Note Idle None None... -
Page 21: Other Control Surface Indications
STAC maintains a Priority Queue which determines which line has priority to go On Air next. The next line in logical queue to go On Air will flash with the special priority indication – red/blue alternating on a Screener surface and yellow/green alternating on a Studio surface. - Page 22 Auto Attendant. The Auto Attendant button on the control surface or STAC IP interface is global in reach. For example, if AA is selected on one control surface, it is active on all. When this button is inactive, STAC will not automatically answer incoming calls.
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Page 23: Stac Ip
Note: STAC only provides an analog video connection to the monitor. The monitor must allow 1024x768 video resolution. If you are having trouble seeing STAC’s video output, be sure that your monitor is set to display the analog (15-pin sub D) input connection. Many new monitors default to their digital video ports. -
Page 24: Static Vs. Dynamic Ip Addressing
STATiC VS. dyNAMiC ip AddreSSiNg STAC is able to serve web pages to clients using web browsers. In order for the browsers to find STAC on your network, STAC must be assigned an IP address. This address can be a fixed static number or can be assigned dynamically by your network, if a DHCP server is present on your network. -
Page 25: Gaining Access
STAC IP cannot dial outgoing calls, either in Answer mode or On Air. You must use a control surface keypad to dial outgoing calls. The STAC IP screen is shown on page page 26. Note: The figure shown is for a STAC12 system. If you have STAC6, only six line fields will be shown. -
Page 26: Major Stac Ip Functions
This function allows the user to change the Prior- ity Queue. Note that, on STAC IP, this function works slightly differently than on the control surfaces. Here, you must select the line you wish to “bump” to Priority status before press- ing the Priority button. - Page 27 Locked, previous On Air lines are disconnected when a new one is chosen. If no lines are locked, all calls are routed to Hybrid 1. Note: The On Air buttons are visible, but disabled, if the STAC IP session is set for Screener or associated with a screener control surface.
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Page 28: Button Status
STATUS The STAC IP buttons indicate the status of each line in much the same way as the control surface. Table 6 shows the different line states and their indications: TAbLe 6 - STAC ip STATeS/iNdiCATioNS Line State Button... -
Page 29: Individual Line Commands
FUNCTioNS While in Text Entry Mode in STAC IP, pressing the Tab key will scroll through the various text boxes. The up arrow () and down arrow () keys select lines for text entry. -
Page 30: Associating Stac Ip With A Control Surface
ASSoCiATiNg STAC ip WiTh A CoNTroL SUrFACe It is possible to “assign” a STAC IP session, either console or remote, to a control surface port. This allows for screening of calls completely via the STAC IP system. In essence, along with all its usual functions, the STAC IP program will determine which lines get routed to the handset of a control surface. -
Page 31: Troubleshooting Remote Stac Ip
If you are unable to access STAC IP from a remote computer after verifying all STAC IP configuration settings, you may have a firewall issue blocking access. STAC IP requires that TCP port 8080 be open on your system to operate correctly. -
Page 32: Delivering Stac Ip Outside The Lan Environment
By definition, Network Address Translation (NAT) and Internet servers are not compatible. If your network uses NAT, you will need to locate STAC in front of the NAT. To obtain a publicly accessible IP, create a DMZ in your router to allow public access to the STAC. STAC uses TCP ports 80 and 8080. -
Page 33: Stac Hybrid Setup And Operation
STAC contains two high-performance digital hybrids. The digital hybrids in STAC can be treated independently from the telephone line switching and hold functions in STAC. STAC hybrids are only utilized on calls that have been put On Air. A block diagram of the STAC system is shown in the figure below. -
Page 34: About The Stac Hybrids
(or STAC IP) and putting another call on the air. Callers on both hybrids will hear audio applied to the Send Input on the STAC mainframe. Audio from the caller(s) on Hybrid 1 is available on the Hybrid 1 Output port. Audio from the caller(s) on Hybrid 2 is available on the Hybrid 2 Output port. -
Page 35: Automatic Gain Control
AboUT Mix-MiNUS Mix-minus refers to the generation of a special audio signal to be fed to callers on the STAC. Essentially, it is a mix of all audio being sent over the air MINUS the callers themselves. This feed is only applied to the Main Send Input on... -
Page 36: Building A Mix-Minus
Mix-minus can be generated several ways, and this section describes many of them. One important element of the STAC is shown below. The STAC has only one input for mix-minus. This means that if you intend to use both STAC hybrids, you must generate a single mix-minus feed with both callers missing. -
Page 37: Option A - Console Provides Telephone Bus Or Audition Bus
This is the simplest arrangement for generating mix-minus for the STAC. As shown below, simply arrange the Mix-Minus Bus to provide all audio in the console except for the incoming callers. Feed this bus to the STAC as a mix-minus. In Figure 2B on page 38, the system is shown using the Audition Bus on a console. - Page 38 CONTROL SURFACE If you plan to use both STAC hybrids (more than one call at a time) then you will need to provide a mix-minus with both callers removed. See if your module can be configured to remove more than one of the incoming fader signals from the mix-minus port.
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Page 39: Option B - Console Provides Mix-Minus Module For Select Channels
In cases where it is essential to have two distinct send signals, it is possible to connect an additional stand-alone telephone hybrid (like the Comrex DH20) to the STAC via the Hybrid Expansion Port on the STAC mainframe rear panel. Essentially, the STAC mainframe will control the lines and instead of forwarding calls to one of its internal hybrids, it will forward them to your external hybrid. -
Page 40: Option C - Connection Of An External Hybrid To Provide Two Input Ports
It’s also sometimes reasonable not to build a mix-minus at all, but rather to tap the main studio microphone signal before the console and feed it directly into the STAC Send Input, as in Figure 5. Note that callers will not be able to hear anything other than the host microphone while On Air (no commercials, music, or other audio sources) but this may be suitable in some circumstances, since the caller will hear the entire program mix while On Hold. -
Page 41: Option D - No Aux Bus Or Mix-Minus Module Available
Finally, the STAC provides an Auto Mix-Minus function which can provide some utility. Due to its limitations, use of this mode is discouraged. By setting DIP Switch 8 on the STAC mainframe to ON, you can apply a full program feed to the STAC, including caller audio. -
Page 42: Option E - Using Auto Mix-Minus Feature
opTioN e - USiNg AUTo Mix-MiNUS FeATUre FigUre 6 - USiNg AUTo Mix-MiNUS SEND IN HOLD AUDIO IN AUX OUT HYBRID 1 OUT HYBRID 2 OUT AC POWER IN 7 - 9 10 - 12 7 - 9 10 - 12 SERIAL HDMI 1 - 3... -
Page 43: Trim Pots
The front panel trim pots provide level adjustments of the Send, Aux Send, Aux Out and Caller Out audio connections. Separate audio level controls let you optimize the audio level(s) of STAC to match the audio levels required by the interfaced audio equipment. -
Page 44: Individual Line Configuration And Clustering
For users with advanced requirements, STAC has the capability of configuring lines for some features on an individual basis. It also has the ability to enable “Clustering” or sharing of individual lines between multiple STAC mainframes. Line Configuration and Clustering are both configured in the STAC IP Line Settings menu. - Page 45 STAC LiNe CoNFigUrATioN SCreeN...
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Page 46: Line Clustering
IP network. In this mode, STACs act very much like legacy key telephone systems, allowing calls to be put On Hold on one STAC, and then picked up by another STAC. The main features of STAC Clustering Mode are: Shared lines are indicated as In Use (on Handset or On Air), Ringing or Available on all STACs. -
Page 47: Clustering Operation
On Handset or On Air) on another clustered STAC, it will indicate as solid yellow (remote handset) and no control is possible. If a line is put On Hold on any STAC in the cluster, it will be indicated as On Hold on all control surfaces and STAC IP screens. -
Page 48: Appendix A - Conformity And Regulatory Information
Place of Issue: Devens, Massachusetts Date of Issue: October 31, 2011 Comrex Corporation, located at 19 Pine Road, Devens, MA in the United States of America hereby certifies that the Comrex STAC Classic System bearing identification number US:DXDKF08BSTAC complies with the Federal Communications Commission’s (“FCC”) Rules and Regulations 47 CFR Part 68, and the Administrative Council... -
Page 49: Declaration Of Conformity For Terminal Equipment - In Accordance With Iso/Iec Guide
Comrex Corporation Address: 19 Pine Road Devens, MA 01434 Terminal Equipment: Comrex STAC Classic System The product described above is in conformity with: Document No.: ICES-03, Part I Title: Harmonized Requirements for Terminal Equipment, Terminal Systems, and Certified Protection Circuitry... -
Page 50: Ec Declaration Of Conformity For R&Tte Directive
EN 55103-2; 2009 (Immunity) Low Voltage Directive (2006/95/EG) EN 60950 Information regarding configuration of this equipment for operation on the telephone networks of the EC countries may be found in the STAC System product manual. Contact person: Thomas O. Hartnett, V.P., Engineering Signed:____________________________________________________... -
Page 51: Regulatory Information
(5.0). To be certain of the number of devices that may be connected to a line, as determined by the total RENs, contact the local telephone company. The REN for the Comrex STAC is 0.8, and is shown as the digits represented by 08 in the product identifier US:DXDKF08BSTAC. -
Page 52: Appendix B - Connecting An External Hybrid To Stac
Some circumstances may require the use of two hybrids with independent audio inputs, without the facility for the callers to hear each other from within STAC. STAC does not support this by default, but an external hybrid (such as the Comrex DH20) can be added to facilitate this by providing the ability to configure STAC for either Split Hybrid Mode or Split Studio Mode. - Page 53 FigUre 7 - LoCATioN oF heAder j27 Determine which STAC hybrid is to be bypassed and move the jumper(s) designated by the legend for Hybrid 1, Hybrid 2, or both to the External Port position. This audio for the selected hybrid(s) will now be transferred to the Hybrid Expansion RJ-45 on the rear panel, rather than the internal hybrid(s).
- Page 54 DH20 to remain On Line at all times. Create a cable to connect between STAC and the DH20. STAC connection will require an RJ-45 (8 position) plug and the DH20 will require an RJ-11 (6 position) plug. This can often be built easily by grafting a telephone cable to an Ethernet style CAT5 cable.
- Page 55 STAC for the internal hybrid that was not bypassed. Connect send and receive audio to the DH20. The STAC and DH20 are now set-up for Split Hybrid Mode. Proceed to step 12 to configure STAC for Split Studio Mode.
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Page 56: Appendix C - Creating A Production/News Extension To Stac
“extended” telephone line. reqUireMeNTS You will require a STAC control surface dedicated to the alternate studio (The STAC mainframe can support up to 4 surfaces total) and an extra, stand-alone hybrid. The requirements of the hybrid are: Must be capable of operating in “dry” mode (i.e. no DC current provided on the telephone line). -
Page 57: Operation
operATioN It is recommended that the control surface used in the alternate studio be configured for screener mode to avoid inadvertently putting calls to on-air state in the main studio. When the hybrid is off-line (not “seized”) the control surface will function as normal, with the ability to dial out on any available line, answer any call, and put them on hold. - Page 58 STAC Mainframe 8-Wire 2-Wire Ethernet Telephone Cable Cable RJ-11 RJ-11 to DH20 to DH20 “Line” Jack “Set” Jack Pin 4 Pin 3 Pin 4 Pin 3 DH20 Line RJ-45 to STAC Control Surface Pin 6 Pin 3 STAC Control Surface...
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