GAI-Tronics 69609-001 Dual Page/Party Interface PCBA - Manual (Page 13)

Pub. 42004-729L2A
69609-001 Dual Page/Party
®
Interface PCBA Page: 13 of 16
f:\standard ioms - current release\42004 instr. manuals\42004-729l2a.doc
09/09
10. Set the page line balance adjustments for Zone A and Zone B as described below:
Page Balance
The Page Balance is used to set the line loading of the page zones page line. After all stations are
connected to the card, the Page Balance is set. Use a station connected directly to the Dual PPI.
Squeeze the pressbar on the handset and blow steadily into the mouth piece. Listen to the sidetone in
the receiver. Adjust the Page Balance until a minimal side tone is obtained in the receiver. The Page
Balance does not require readjustment unless 10 or more stations are added to the zone.
N OTE : If a handset station is not available for use as indicated above, perform the following steps:
• Connect a true impedance meter to the page line of the appropriate Dual PPI.
• Adjust the line balance potentiometer to a reading as close to 33 ohms as possible
11. Set the monitor level adjustments for Zone A and Zone B, if used:
Monitor Level
The Monitor Level can be adjusted during system start-up. This is required only if the Monitor
Receive has been selected for the corresponding zone during the jumper configuration. Have an
individual go to the nearest Page/Party
® station and talk on the page line. Adjust the Page Monitor
until the desired level is achieved.
12. Verify that the Dual PPI properly routes audio and communicates with the external devices as
indicated in the system manual.
Operation
The operation of the Dual PPI is controlled by the MCU. See the MCU configuration details in the
system manual for all Dual PPI operational information.