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10, 10 RM-220 2 Channel Remote Station The termination of an intercom line (or channel) is a 220 Ohm resistor in series with a 4.7 KOhm that is paralleled with a 10 uF capacitor. Station Powering: The RM-220 needs +20 to +30 volts between pins 1 and 2 of the intercom con- nectors. Typical Clear-Com systems are powered by a Main Station or a Power Supply. Clear-Com power supplies can be p…
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6, 6 RM-220 2 Channel Remote Station DESCRIPTION The "PL-Pro" RM-220 is one of a series of professional intercom stations specifi- cally designed for the broadcast industry. This 2 channel, one rack space sta- tion is ideal for ENG and EFP trucks, production studio consoles, and small TV facilities. The station can be tailored to your needs through it's programmable "Talk" button options. The RM-220 is compatible with all Clear-Com Party-Line intercoms, The station also incorporates …
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31, 31 RM-220 2 Channel Remote Station Resistors & Resistor Packs ... continued Value Power Type Tol. Part # Designator 20K OHM 1/4 Carbon Film 5% 410151 R49 R51 R56 R58 R98 R99 R125 R126 22K OHM 1/8 Metal Film 1% 410157 R72 R1l7 R118 R123 30K OHM 1/4 Carbon Film 5% 410090 R140 R142 39K OHM 1/4 Carbon Film 5% 410019 R132 39.2K OHM 1/8 Metal Film 1% 410111 R76 R77 47K OHM 1/4 Carbon Film 5% 410021 R5 R6 R7 R18 R29 R30 R95 R96 R127 Rl44 R160 47.5K OHM 1/8 Metal Fi…
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27, 27 RM-220 2 Channel Remote Station Program Monitor Level Control The "Program" volume control sets the amount of the program signal heard di- rectly in the headphone or speaker. This control only affects what is heard in the headphone or speaker and does not affect "Program" feed to the intercom lines. NOTE: If Program is being feed to the Channel B intercom line the program feed to the headphone and speaker is disabled. Announce Button The "Announc…
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7, Clear-Com PM-220 7 RM-220 2 Channel Remote Station "Studio Announce" allows control of a paging speaker in a studio. A front pan- el button activates this function and an assodated relay. The RM-220 installs in a standard 19" equipment rack, using only one rack space . The station provides two 3-pin, XLR connectors for Input and loop- through on each channel. TECHNICAL SPECIFICATIONS: CONTROL SYSTEM: CMOS Digital Logic and Signal Switching HEADSET…
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25, Clear-Com PM-220 25 RM-220 2 Channel Remote Station OPERATION Normal operation of the RM-220 only requires access to the front panel con- trols. For intercom operation set the listen Level controls for each channel to desired level and press the Talk switches when talking. If a headset is being used, set the sidetone control for the channel that is being talked to for the de- sired amount of sidetone in the earphone. If the Panel Mic and Speaker are being used, set the sidetone contro…
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34, 35 RM-220 2 Channel Remote Station ,--------------- I h~T100>CD_L_,; ,--------------- FRO N T P ANEL T ALK A ~ K8 " I I - I ~ 000>< - - V-- I II ~£4~ ~ CALL CALL I ' ,~ l l~!;:!<' ~ 11 ~ ~lJ<. ~ _ ~ -'~ ~ ~~ ~~ ~ _ ~ -' ~ -,' ~'~ '..,'~ '-,'-, '_' -,'-, '-,' -,"' -,"' J"' -,"'; : J.~Il--~ -~~. ~ L:?::' ~,u"-…
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5, 5 RM-220 2 Channel Remote Station THE CLEAR-COM CONCEPT Clear-Com is a closed-circuit intercom system that consistently provides high- clarity communication in high-noise and low-noise environments. A basic sys- tem consists of a single- or multi-channel power supply or main station con- nected to various single- or multi-channel remote stations, such as beltpacks and loudspeaker stations. Clear-Com manufacrures a wide variety of bot…
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2, Clear-Com PM-220 Clear-Com Systems RM -220 2-Channel Remote Station Instruction Manual PIN 810193 (C) 1990 Clear-Com Systems All Rights Reserved Clear-Com Systems 945 Camelia St. Berkeley, Ca. 94710 U.S.A While Clear-Com makes every attempt to maintain the accuracy of the information contained in its product manuals, that information is subject to change without notice.
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3, 3 RM-220 2 Channel Remote Station CLEAR-COM LIMITED WARRANTY Clear-Com products are warranted to be free from defects in materials and workmanship for a period of one year from the date of sale. Clear-Com's sole obligation during the warranty period is to provide, without charge, the parts and labor necessary to remedy covered defects appearing in products returned prepaid to Clear-Com, 945 Camelia St., Berkeley, Ca. 94710-1484, U.S.A. This warranty does …
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30, Clear-Com PM-220 30 RM-220 2 Channel Remote Station Capacitors ... continued Value Type Volts Tot Part # Designator 0.47 uF Aluminum 50V 150151 C9 c60 C61 1 uF Tantalum 35V 20% 150116 C45 1 uF Aluminum 50V 10% 150002 C43 C44 C58 C82 C83 C90 C91 C93 2.2 uF Aluminum 50V 150065 C59 C94 4.7 uF Aluminum 50V 150087 C21 C23 10 uF Aluminum 50V 150064 C1 C2 22 uF Aluminum 35V 20% 150152 C17 C55…
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24, Clear-Com PM-220 24 RM-220 2 Channel Remote Station Remote Control of TALK Switches The TALK switches of the RM-220 can be remote controlled with external con- tacts that are available on the ACCESSORY connector on the rear panel. A footswitch or remote pushbutton when wired to the ACCESSORY connector acts exactly the same as pushing a TALK switch on the front panel. Both latch- ing and momentary actions are active. FOOT SWI…
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32, ::0 w ~ > '" ANNOUNCE ~ 0- 0' PANEL SIDET[)£ HEADPHONE o:l ~ o f;)' ::tJ ao MIC $ ~ ~ S PANrL MIC ~ o GAIN AD-.JUST 0' .., I\l PROG . o So LEVEL ::T (b 01 @ ::l ::l () ~ ~ m I ::tJ i' N i (II () N o . .. 3 ::J BAL:.LANCED PROG. PROG.MUTE " PROGRAM VOLUME IV 8 INPUT i ci' i 3 ::l 3 !II ..... <0 ~ MUTE ENABLE
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4, Clear-Com PM-220 4 RM-220 2 Channel Remote Station -Be prepared to provide your companys name, address, phone number, name of person to contact regarding the repair, type and quantity of the equipment, description of the defect, and the equipment serial number(s). Questions regarding returns for repair should be directed to: Customer Service Department Clear-Com Intercom Systems 945 Camelia Street Berkeley, California 94710-1484 …
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8, Clear-Com PM-220 8 RM-220 2 Channel Remote Station INTERCOM LINE DRIVE/RECEIVE CIRCUITS: Impedance, Output Load: ------ > 10 KOhms (200Hz - 10 KHz) Level, Line (200 ohm load): -9 dBv* (nominal) +5dBv (max before clip) Sidetone Null Capability: ------- > 25 dB (200Hz - 10 KHz) Crosstalk, Station Induced Ch. to Ch.: >60 dB Noise, SN Ratio in Listen Channels: >60 dB LINE LEVEL OUTPUTS: SA (Anno…
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29, 29 RM-220 2 Channel Remote Station Bill of Materials for the RM-220 Miscellaneous Device Description JACK STEREO PC MOUNT 1/4 IN JUMP JAX SEALECTR~264810 POT 50K LINEAR 25MM SHAFT TRANSFORMER 600CT /600CT #TIC108 TRIM POT PIHER#PT10WH-50K TRIMPOT PIHER#PT10WV-50K TRIMPOT PIHER#PT-10V-5K TRlMPOT PIHER#PT-15V REIAY SPDT 24V MINI PC ITI#SZ24 SWITCH, DIP PIANO 8 POS. SWITCH, PB DPDT W/LONG PLUNGER SWITCH, PB DPDT W /SHORT PLUNGER SWITCH, PB LOW PROFILE W /32V LAMP SWITCH, ROC. DPD…
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33, 33 RM-22D 2 Channel Remote Station ff1U ~ 5iJ*BU:~. _________ __ _____ _I' "~=t.' •• ~ I.t~ I·-,~ ____ _. __ _______ ____________________ _ ' ,~ : ".:'" ~ ~ ; ~=0 , l ,., ". ~ ~ , .""'""" ' iii;;;' !, " . " . ' " '" '0"' ~ > : - - ------ ' : INP UT ~~:..:';... C I !C -~, I ":'…
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21, 21 RM-220 2 Channel Remote Station Connect a balanced input to pins 8 and 15 with the shield connected to pin 7. To connect an unbalanced input connect the signal to pin 8 and connect the shield to pins 15 and 7. Connecting Party-Line Products As Program Sources: If other Clear-Com products are to be used as a program source directly such as an AC-I0H Tele- phone interface use the following interconnection cable. Pin 14 of the DB-15 ACCESSORY connector provides +30 VDC to power the external …
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20, Clear-Com PM-220 20 RM-220 2 Channel Remote Station Program Input There are to different purposes for the Program Input; monitoring program in the speaker and headphone or feeding the Channel B intercom line with pro- gram material. Monitoring Program: To monitor Program in the headphone or speaker: • Connect the Program source to the proper pins on the DB-IS. • Make sure that DIP switches 7 & 8 are set to the OPEN position. • Set the front panel control marked Program for the desire…
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17, 17 RM-220 2 Channel Remote Station Cable/School Television Studio The following block diagram describes a typical Cable or School Television Studio installation. ASSISTANT DIRECTOR VIDEO GRAPHICS DIRECTOR MR-I02 MR-I02 CAMERAS FL.OOR MANAGERS . RS-501 RS-501 RS-501 RS-501 ~ __ ~ CHANtEL. B PS-22 PROGRAM INPUT fROIA STAnON SA OUTPUTS PROVIDED BY USER A ~ __ --, PAGING SPK IN 5ruOl0 "'XOI/ AlAP R…
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13, 13 RM-220 2 Channel Remote Station DESCRIPTION OF OPTIONS AND ADJUSTMENTS Dip Switch Option Switches (Rear Panel) Eight dip switches on the rear panel enable various options in the station. • Momentary only action only on the TALK switches. • Automatically send a CALL signal when a TALK is active. • Interrupt any active TALKs when the ANNOUNCE button is pressed. • Interrupt any active TALKs when the IFB drcuit is ac…
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15, 15 RM-220 2 Channel Remote Station Intercom Line Length Compensation (Internal) The receive circuits of the intercom channels have been optimized for a Inter- com line length between 200 and 700 feet (60 and 200 meters). The capaci- tance of the intercom line must be compensated for in the receive circuits if a good sidetone null is to be achieved. When using a speaker a good sidetone null is necessary to achieve a usable listening level. A…
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26, 26 RM-220 2 Channel Remote Station Call Buttons Each channel has its own "Call" button. Pressing the "Call" button at any time will send a "Call" signal on that channel regardless of the activation of the "Talk" circuit for that channel. The "Talk" button for that channel will illuminate brightly while the "Call" but- ton is pressed indicating the presence of a "Call" signal on the line. Listen Leve…
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22, 22 RM-220 2 Channel Remote station ExtemallFB (MA-4 and PIC-4000 Connection) Clear-Com provides a stand-alone IFB system called a PIC-4000. The PIC-4000 provides four interruptable IFB feeds from two program sources and located in a central location. The MA-4 is a four channel control head intended to work with the PIC-4000. A MA-4 is located at each location where program interrupt is to be initiated. Each MA-4 has its own panel mounted microphone which w…
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23, 23 RM-220 2 Channel Remote Station PA Feed to Studio Output Pressing the button marked "Announce" on the front of the RM-220 temporarily disables activity of the station and places the output of the selected micro- phone on the ANNOUNCE AUDIO OUTPUT terminals of the ACCESSORY I/O DB-15 CONNECTOR on the rear panel of the station. Isolated relay contacts are also available for controlling some e…
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18, Clear-Com PM-220 18 RM-220 2 Channel Remote Station ACTUAL APPLICATIONS This section describes detail instructions for various types of applications. A block diagram such as those in the previous section describing an ENG/EFP Truck and a Cable/School Television Studio should be developed for your ap- plication. The following sub-topics in this section describe in detail each of the major application types that might be encountered. The sub-topics in this sec- tion are: • Intercom line Wiring • Program Input • I…
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9, 9 RM-220 2 Channel Remote Station INSTALLATION This section discusses the installation of the RM-220 in an intercom system. Typical applications, overall installation theory, and detail of each connector, and adjustment of the RM-220 are discussed. INSTALLATION OVERVIEW This section describes the Clear-Com concept in intercom line interconnection. The following subjects are discussed: • Intercom Line Connection • Line Termination • Station Powering • Cable Consid…
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14, 14 RM-220 2 Channel Remote Station Panel Mic Level Adjustment (Internal) The microphone preamplifier for the Panel Microphone has an internal gain adjustment control. This gain can be adjusted for different operating condi- tions. As shipped from the factory the control is set to minimum gain such that the panel microphone and a headset microphone have the same volume when worked at about 2 inches. To adjust the panel microphone gain, remove the top cover of the unit and ad- just R1…
