CST38 User Manual VHF MICROEAR "DESKTOP" TRANSMITTER SN: ________________ Rev.
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Rev. 02 CST38 User Manual BRIEF DESCRIPTION CTK38 is composed by a VHF transmitter (CST38) and a power supply (PSP910). The CST38 transmitter has been especially designed to allow best usage of MicroEar’s family “in-ear receivers” and many modulation parameters such as deviation, level/frequency curve, compression factor has been optimized. Therefore CST38 assures maximum performances of MicroEar both as sound quality and as audio level (in any case limited because of the very small size of receiver).
Rev. 02 CST38 User Manual SAFETY INSTRUCTION Read this safety instruction and the manual first Follow all instructions and information. Do not lose this manual. Do not use this apparatus under the rain or near the water. Do not install the apparatus near heaters or in hot environments, do not use outside the operating temperature range. Do not open the apparatus, only qualified service technician are enabled to operate on it.
CST38 User Manual Rev. 02 FRONT PANEL 1) SELECTOR: modulation audio input level range (Micro / Line). 2) LED INDICATION: peak-indicator / limiter-on status (yellow Led). 3) ADJUSTMENT: audio input sensitivity. With the optimum sensitivity adjustment, the yellow Led [2] must flash under modulation peaks. 4) SELECTOR: transmitting channel ( 0 ÷ F ). 5) LED INDICATION: apparatus is on (red Led). 6) SWITCH: On / Off (Power).
Rev. 02 CST38 User Manual REAR PANEL 7) CONNECTOR: antenna (N-F type connector). 8) CONNECTOR: modulation audio input (XLR3-F type connector). The audio input line is transformer balanced and floating. pin 1 = ground; pin 2 = AF-a input; pin 3 = AF-b input. 9) CONNECTOR: transmission activation (Push To Talk) (mono ¼” - 6.3 mm, standard jack type). The transmission is allowed when the central pin (hot) is connected to external ring (ground).
CST38 User Manual Rev. 02 OPTIONAL VOX 38 - Voice Activated Circuit board VOX 38 board, mounted on the CST 38 main board This device is useful to switch on automatically the carrier of the transmitter only when the modulating signal is present on the TX’s input. The circuit is mounted on a printed-circuit board, that has to be factory-mounted in the transmitter. Once the modulation audio signal reaches the pre-set threshold, the transmitter is activated.
Rev. 02 CST38 User Manual TECHNICAL SPECIFICATIONS Switchable channels Switching-window Frequencies : : : Channel spacing Frequency error Temperature range RF output power RF output impedance Spurious emissions Transmission activation : : : : : : : Modulation Mod. audio input Mod. audio input level : : : 16, preset in the 140 ÷ 250 MHz range (other upon request). 10 MHz (other upon request). microprocessor controlled PLL synthesizer circuit, with 25 kHz minimum step [1].
CST38 User Manual Rev. 02 MANUFACTURER DECLARATIONS In compliance with the following requirements RoHS Directive (2002/95/EC) WEEE Directive (2002/96/EC) Please dispose of the diversity transmitter at the end of its operational lifetime by taking it to your local collection point or recycling center for such equipment ITALY ONLY Obblighi di informazione agli utilizzatori ai sensi dell’art. 13 del Decreto Legislativo 25 luglio 2005, n.
Rev. 02 CST38 User Manual Compliance Model CST38 CST38-US In Compliance with Max Power& Freq.
CST38 User Manual Antenna Code Description AWN38-V11 1/4λ whip antenna Max permissible gain [dBi] 2,14 AGN00-V9 1/4λ mobile whip antenna 2,14 Rev. 02 This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Rev. 02 CST38 User Manual Wireless System Communications Via Spin 156 I-36060 Romano d’Ezzelino Italy Tel. +39 -0424 -382605 Fax +39 - 0424 - 382733 www.wisycom.com e-mail: sales@wisycom.
