User manual TELEX AUDIOCOM EMS-4001 REV E

[. . . ] If a substitute container is used, the equipment should be wrapped in paper and surrounded with at least four (4) inches of excelsior or similar shock-absorbing material. All shipments must be sent to the following address and must include the Proof of Purchase for warranty repair. Upon completion of any repair the equipment will be returned via United Parcel Service or specified shipper, collect. Factory Service Department Bosch Security Systems, Inc. [. . . ] 19 CHAPTER 1 Introduction Description The EMS-4001 adds four (4) powered intercom channels to an MS-2001 Master Station, and it provides talk, listen and call buttons for the added channels. Up to four (4) EMS-4001 Expansion Master Stations may be connected to the MS-2001 allowing up to 16 channels (18 channels total). The MS-2001 microphone is used to talk back to the EMS-4001 channels, and the MS-2001 speaker is typically used for listening. However, there are also separate speaker jacks on the back panel of the EMS-4001 for independent monitor speakers, if desired. There are also four (4) additional program inputs on the back of the EMS-4001, one (1) for each added channel. The MS-2001/ EMS-4001 combination can be used as a simple, multi-channel intercom user stations. In this configuration, the program inputs (and possibly the PA output of the MS-2001) are most likely not used, and the station operator has only talk, listen and call capability. It is also possible the advanced features of the MS-2001, such as Mic Kill Send, might be turned off. Alternatively, the MS2001/ EMS-4001 can be used as a master station. In this application, one (1) or more program inputs and the PA output may be connected, and the program signals to the intercom channels can be turned on or off from the MS-2001. Additionally, the Mic Kill Send feature can be enabled, and microphones on any channels may then be turned off from the MS-2001. 7 Features FIGURE 1. 4. EMS-4001 Front and back features Intercom Talk Keys - Momentary or latching (hands-free operation possible). Call Keys - Used to call intercom channels and to indicate incoming calls. Intercom Listen Keys - Momentary or latching operation possible. Channel Power Status Indicators - The indicators are green for normal operation and change to red if there is a short circuit or overload condition on a power output line. If an indicator turns red, either disconnect the corresponding channel connector or turn off the intercom system and locate the problem before resuming operation. Universal AC Power Connector - The unit accepts any input power in the range of 100-240VAC, 50/60Hz. Intercom Channel Connectors - These connectors provide the power and audio connections for each of the four (4) intercom channels. EXP IN and EXP OUT Connectors - The EXP IN connector receives the microphone audio signal from the MS2001, and it sends the monaural mix of the four (4) EMS-4001 channels to the MS-2001 speaker or headset. The EXP OUT connector connects to the EXP IN connector of an additional EMS-4001. Up to four (4) EMS-4001 Expansion Master Stations may be daisy chained with the EXP IN and EXP OUT connectors. An EXP IN/OUT cable is supplied with each EMS-4001. [. . . ] Must have male 3-pin XLR connector at one (1) end for connection to the XP-USPG or XP-4PGM program inputs. Pin-out for program inputs is as follows: Pin 1: common Pin 2: + program input Pin 3: - program input · Shielded audio cable. Must have male 3-pin XLR connector at one (1) end for connection to the XP-USPG or XP-4PA output. Pin-out for PA output is as follows: Pin 1: common Pin 2: + PA output Pin 3: - PA output 15 16 CHAPTER 3 Operation Power-Up To power up the EMS-4001, do the following: > Plug in the power cord. [. . . ]