Specifications

107
Station Card Removal/Installation
New Station Card
The jumpers on the new station card (Part No. 702-9441) are used as shown in the
following table.
Table 11: Jumper Positions for Station Card 702-9441
1
factory setting (unless you specify otherwise)
If your Tx has built-in pre-emphasis, then set JP3 to A and JP1 to B
If your Tx has flat frequency audio, then set JP3 to B and JP1 to A
If you wish to cross busy your terminal with another terminal at your site or with another
terminal on your RF frequency, call the Zetron Technical Support at [phone] for
help.
Station Card Adjustments
Each radio station interface card has three adjustments:
• XMIT AUDIO level to the transmitter
• XMIT TONE level to the transmitter
• RECV AUDIO from the receiver
Please note the XMIT AUDIO adjusts the PCM audio playback level, which normally
carries recorded voice. The XMIT TONE level adjusts the signaling tones and link
modem (option). RECV AUDIO is used only for the Talkback option.
The digital paging level has no adjustments on the Zetron interface card. Channel
deviation for digital paging is set on the particular RF transmitter.
Two different adjustment procedures are used, depending upon whether the paging
transmitter is located over a remote line or not.
Jumper Purpose Settings Available
JP1 Tone Audio to TX A
1
= flat frequency audio
B = de-emphasized (cut high frequencies)
JP2 Talkback / Tone A
1
= Talkback audio path enabled
B = Tone output connected
JP3 Voice Audio to TX A
1
= flat frequency audio
B = pre-emphasized (boost high frequencies)
JP4 Voice Audio to RX A
1
= flat frequency audio
B = de-emphasized (cut high frequencies)
JP5 COR busy polarity A = open circuit is busy
B
1
= grounded circuit is busy
JP6 Terminal Busy Polarity A = open circuit is busy
B
1
= grounded circuit is busy
JP7 Must be OUT