Simplex 2001 Voice Communications Preamplifier Monitor Module Descriptions

2001 Voice Communications Monitor Modules Descriptions when making any rapalrs Instrlla lon servicing performed Simplex Representatives quail DUAL PREAMPLIFIER MONITOR DESCRIPTION Refer to Fig 1 2001 6027 which primary amplifiers 2001 Voice Communications and Preamplifier Monitor Module used This module multi amplifier a group one backup amplifier pre amp monitor module contains following TBL indicators 1 TBL when the pre amp 1 signal is missing 2 TBL when the pre amp 2 signal is missing to 2001 Voice Communications Concepts Manual for a this block diagram PREAMPLIFIER MONITOR MODULE 1 REFERENCE pre amp monitor module circuitry shown on the following drawing WD No 841 294 Preamplifier Monitor 1997SimplexTime Co Gardner Mass 01441 0001 U S A FUNCTION Refer to Fig 2 Condition This module is used in systems with non resound pre amp 1 signal fed to pins R and 14 of the pre amp monitor module and the pre amp 2 signal is fed pins 1 and 2 of the pre amp monitor module When both pre amp signals are present relay Kl is de energized the TBL indicators are off 1 Trouble the pre amp 1 signal is missing at pins R and 14 for more than 20 seconds relay Kl energizes This causes Kl contacts transfer and the following conditions occur PRE AMP 1 TBL indicator V sent out pin 6 System Trouble V sent out pin M to Pre Amp Select Relay in Audio Control Module OV sent out pin 7 to printer if used pre amp 1 signal causing restored and the AUDIO TBL RESET switch Kl to de energize This in turn causes pressed PRE AMP 1 TBL indicator V on pin 12 is go 2 Trouble the pre amp 2 signal is missing at pins 1 and 2 the following conditions occur PRE AMP 2 TBL indicator V sent out pin J OV sent out pin L to printer if used the pre amp 2 signal is again applied to pins 1 and 2 the PRE AMP 2 TBL indicator goes out POWER SUPPLY Kl PULSING COMM PRE AMP 2 1 LED PRE AMP 1 TEL TEL RESET PRESSED VOUT WHEN PRE 1 TEL V OUT WHEN PRE TSL PRE PIN VOUT WHEN PRE 2 TEL PRINTER PREAMPLIFIER MODULE 2 DUAL PREAMPLlFlER MONITOR MODULE DESCRIPTION as 2001 6027 Dual Preamplifier Monitor Module except for the following This module is used in systems with resound trouble During a pre amp 1 trouble a momentary V instead of a steady V is applied to pin 6 Drawing Reference the 6026 Dual Preamplifier Monitor drawing see 2001 6026 WD No 841 293 DUAL PREAMPLIFIER MONITOR MODULE DESCRIPTION to Fig 3 as 2001 6027 Dual Preamplifier Monitor Module except for the following This module is used in systems with resound trouble During a pre amp 1 trouble a momentary V instead of a V is applied to pin 6 After a pre amp trouble an AUDIO TBL RESET not reset the 6028 pre amp monitor module The 6028 its normal pins R 1 monitor circuitry automatically as soon as the pre amp 1 signal 14 applied The 6028 pre amp monitor module systems dual amplifiers The V on pin M is not transmitted the Pre Amp Select Relay in the Audio Control Module used only Drawing Reference 6028 Dual Preamplifier Monitor see 2001 6028 WD No 841 293 I ALARM PREAMPLIFIER MONITOR MODULE 3 DUAL PREAMPLIFIER MONITOR MODULE DESCRIPTION as 2001.6027 Dual Preamplifier Monitor Module except for the following After a pre amp 1 trouble an AUDIO TBL RESET The 6029 pre amp 1 monitor circuitry automatically 1 signal is applied to pins R and 14 not required reset the 6029 pre amp monitor to its normal condition as soon as the The 6029 pre amp monitor module pin M is not transmitted used only in systems containing dual amplifiers the Pre Amp Select Relay in the Audio Control Module Fig 3 The V Drawing Reference the 6029 Dual Preamplifier Monitor drawing see 2001 6029 WD No 841 154 Simplex 3 87