GAI-Tronics 69609-001 Dual Page/Party Interface PCBA - Manual (Page 15)

Pub. 42004-729L2A
69609-001 Dual Page/Party
®
Interface PCBA Page: 15 of 16
f:\standard ioms - current release\42004 instr. manuals\42004-729l2a.doc
09/09
Status/Message Meaning Suggested Action
No audio in the
zone 1. The audio path is
impaired.
• Verify the connection between the Dual PPI and
the P2 connector.
• Verify the connection between the P2 connector
and the affected zones.
• Call for service.
2. MCU configuration
is not correct.
• Verify the proper MCU configuration.
• Call for service.
Receiver sidetone is
high. The page line balance
needs adjustment • Check the Page Balance Select jumper settings (P6
and P7).
• Adjust the Page Balance for the affected zone.
• Call for service.
Monitored audio
levels are low. The monitor level needs
adjustment. • Check the Monitor Receive jumper settings (P12
and P13).
• Increase the Monitor Level adjustment for the
affected zone.
• Call for service.
Specifications
Electrical
Power requirements .............................................................................................. +5 V dc from backplane
+12 V dc from backplane
-12 V dc from backplane
Current draw .............................................................................................................Nominal +5 V, 80 mA
+12 V, 110 mA
-12 V, 70 mA
Connections.................................................................................... Two (P1, P2) × 64-pin DIN connectors
Inputs/outputs ( × 2 zones)......................................... Page line, 33 ohms, 250–6000 Hz, 1.5 V
RMS
nominal
Party line 1, 33 ohms, 250–3500 Hz, 1.5 V
RMS
nominal
Party line 2, 33 ohms, 250–3500 Hz, 1.5 V
RMS
nominal
Dry contact closure input, normally open, maintained
External relay control output, 105 mA short circuit current
Data communications............................................................................................. 2400 baud FSK modem
Off hook detection ................................................................. Less than 120 ohms across party lines 1 & 2
Ground fault detection ................................ Less than 5000 ohms to ground for page line and party line 1
Output .................................................................................................. 1.5 V
RMS
nominal into 33-ohm load
Distortion ........................................................................................................... 1.5% max. THD @ 1 kHz
FSK output to line................................................................................. 0.7 V
RMS
, 2 Vp-p into 33-ohm load
FSK frequencies............................................................................................................ 30.720 kHz (Mark)
32.914 kHz (Space)
Front Bezel Controls .............................................. Monitor Speaker Level Adjustment (Zone A/Zone B)
Page Line Balance Adjustment (Zone A/Zone B)