M201 — Relay Module

M2O1 RELAY MODULE The M2O1 Re ]ay Modul e is des igned to be used a$ a n audi0 switcher It comprises two identica1 relay switching circuits each capab ] e 0 f switching either one 0 f two ba lanced inputs to one baTanced output _ Provision is made for insertion 0 f fixed Toss attenuator into the norma TTy open pa th expanding the usefulness 0 f the module for app] ications such as sTating part-muting and s imilar functions The open circuit voltage a t modu ] e pin 2 is approximately +9 volts_ With the contro] terminai floating the a ssociated relay wil] be de-energized Alternatively , Togic 1" voltage_supp]ied to the control termina] , ranging from +9 t0 +30 vo]ts , will a ] 50 keep the reTay de-energized Once logic "0" is appl ied to the contro] input , ranging from 0 to +2 volts , the a ssocjated relay Wil] energize_ Separate adjustab]e delays may be selected for the relay pull-in and drop-out times For adjustment 0 f the delay times refer to the schematic_ A separate timing diagram on page 2-1 shows the operation 0 f the Togic circuitry.

Pins B and P 0 f the module connector are each capab ]e 0 f sinking current 0 f approximately 20 ma max imum for such purposes a $ externa 1 contro] and/or an indicator Tamp 1-1

MFG MFG PART NUMBER Integrated Circuit Nationa 1 MM74C14N MMT4C221N 93 US U6 MMZ4COON Voltage Regulator LM340T-12 Component va ]ue depends on specific mode ] Consult schematic for deta i15 HBS recommends the us e 0f replacement parts made by the specified manufacturers for continued optimum equipment performance . 4-3

M2o1 RELAY MODULE Reference: M2o1 Manual Inspect module for correct assembly 2 a) Insert module into WBS M2o1 TEST JIG . b ) Apply +25 DC to the red POWER binding post on the test jig (black is DC common ) c) Measure the supply current which should be approximately 30 mA (relays de-energized) d) Apply test jig_ dBm signal to the input binding posts of the e) Connect an oscilloscope or AC voltmeter (eg HP 400 FL) to the output binding posts 3 Switch the AUDIO SELECT to SECTION position A, and place the TRANSFER switch in the off position.

b ) Confirm the output to be dBm (identical to the input) c) Place the TRANSFER switch in the MoM (momentary) posi- tion and observe that the output disappears (relay K1 energizes indicated by ilumination of RELAY lamp #1) d) Release the TRANSFER switch and change the AUDIO SELECT to SECTION 1 , position B Confirm that no output is present f) An output should appear when the TRANSFER switch is moved to either the ON or the MOM _ position.

(K1 energizes, RELAY lamp #1 illuminates) g) Measure the supply current with the relay energized (TRANSFER switch "ON" ) Confirm nominal current of 85 mA Repeat #3 _ steps a) to g) for SECTION SELECT switch. as shown on the AUDI0 Page of ISSUE APRIL/83

M2o1 RELAY MODULE Note: This test procedure refers to the M2o1 module used as an audio switch. To test the MZOIA (slate relay) or the M2O1B (monitor dim) versions, refer to the M201 manual and partciularly WBS schematic B201-02-001 5 The relay pull-in and drop-out delay times may also be set as shown in WBS schematic B 201-02-001 Page of 2

M2o1 RELAY MODULE Note: This test procedure refers to the M2o1 module used as an audio switch. To test the M2OIA (slate relay) or the M2O1B (monitor dim) versions, refer to the M201 manual and partciularly WBS schematic B201-02-001 , 5 The relay pull-in and drop-out delay times may also be set as shown in WBS schematic 201-02-001 Page of 2

M2 01 RELA Y MOOULE

PART OESCRIPTIO N MFG MFG PAR T NU MBER Resf stor ',W • R6 R7 R8 , , " m 4701< Philips , , , R9 ," 2K , RIO m R11 , m , , , R12 , m , R13 m , R1' R15 ," m 2K , , , R16 , m R17 , m ", R18 , zxz R19 , 4K7 ," R20 • , , 821 , • R22 " • R23 Tri m pot Plher PT 10h ( 2 • 5 ) • R24 Res i s tor • 825 , , "" Philips , , • R26 , m , R27 , 4701< , R28 2K , R29 ," m , R30 m R31 , m , R32 , m , R33 , 2K , R34 " m , , 835 " m R36 , m , , a

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R37 2K7 , , ps

R38 4K7 BS W :// tp ht

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WARO·SECK SYSTEM S LT C .

PARTS LI ST

"2 01 REl AY " ODULE

PART DESCRI PTI ON M " " FG PART HU MBER Ul Inte!ill"illted C1rtu it Ha t ion al K" 7 4 CI4" U, • • K" 74 C22 1" U3 • • • U4 • • "K 74 COOH US • • • U. ve 1tage Regulato r • lK340T ·12

.. c cmcc nc o e val ue de pe nds o n spe c t r t c mo dol , Con su l t sChemat ic f or details.

was r ecoMmen ds t he us e of repla ceaen t pa r ts Made by t he speci f ied Manuf a c t ur e rs f or con t in ued optiMUM equi pMent ce r t oreen ce . a .c ps BS W :// tp ht

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M2 01 RELA Y MOOULE

PART OESCRIPTIO N MFG MFG PAR T NU MBER Resf stor ',W • R6 R7 R8 , , " m 4701< Philips , , , R9 ," 2K , RIO m R11 , m , , , R12 , m , R13 m , R1' R15 ," m 2K , , , R16 , m R17 , m ", R18 , zxz R19 , 4K7 ," R20 • , , 821 , • R22 " • R23 Tri m pot Plher PT 10h ( 2 • 5 ) • R24 Res i s tor • 825 , , "" Philips , , • R26 , m , R27 , 4701< , R28 2K , R29 ," m , R30 m R31 , m , R32 , m , R33 , 2K , R34 " m , , 835 " m R36 , m , R37 , 2K7 , R38 , 4K7 ,

._2

WARO·SECK SYSTEM S LT C .

PARTS LI ST

"2 01 REl AY " ODULE

PART DESCRI PTI ON M " " FG PART HU MBER Ul Inte!ill"illted C1rtu it Ha t ion al K" 7 4 CI4" U, • • K" 74 C22 1" U3 • • • U4 • • "K 74 COOH US • • • U. ve 1tage Regulato r • lK340T ·12

.. c cmcc nc o e val ue de pe nds o n spe c t r t c mo dol , Con su l t sChemat ic f or details.

was r ecoMmen ds t he us e of repla ceaen t pa r ts Made by t he speci f ied Manuf a c t ur e rs f or con t in ued optiMUM equi pMent ce r t oreen ce .

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ve...... M2.0 1 V A Q."'T 1O "-l

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