AWS 924-948 - Solid State Logic

C: Connector PinoutsConnector Pinouts . . . continuedRed Light / Talkback / GP IOLocation:Centre Section Top Rear PanelConnector Type: 25-way D-type femalePin Description Notes:1 Red Light Relay contact ‘A’ Normally open – follows Red Light switch. See Note below.14 Red Light Relay contact ‘B’ “ “ “ “2 0V15 GP Input 1 (not used)3 GP Input 2 (not used)16 Monitor Cut4 Monitor Dim17 Slate Switch5 Listen Switch18 Red Light Switch6 TB All Switch19 FB A Switch7 FB B Switch20 Ext TB Switch8 +4V Max 200mA21 Slate Tally9 Listen Tally22 Red Light Tally10 TB All Tally23 FB A Tally11 FB B Tally24 Ext TB Tally12 -25 -13 -Notes:• All switch inputs are active low (ie. connect to 0V to trigger). Inputs are pulled up internally to +4V via a 3K9resistor. Inputs are also diode clamped to 0V and +4V to protect the input circuitry.• All tallies are open collector pull-down using a 47R series resistor.• Red Light tally contacts are via DIL relay. Contact rating is 100Vdc, 125Vac, 100mA max.Do not use the output contacts to directly switch capacitive or reactive loads; always use an external relaywith a suitable contact rating.Pinouts not shown:• Serial ports 1 and 2 are for specific SSL equipment and their pinouts are therefore not included.• The VGA connector follows the standard VGA pinout.Appendices Page A-6AWS 924-948 Owner’s Manual