167
Potentiometers
with the receive and transmit FFSK signals. To activate the test tones, enter the Software
Configuration Program and select FFSK Level Set in the Main Menu.
summarizes the purpose of the pots on the transponder main board. After the
table, each pot is individually described in more detail.
The potentiometers are presented in the order of adjustment for a new installation.
Table 12: Transponder Board Potentiometers
FFSK OUT (R108)
This pot adjusts the output level of FFSK transmissions. The Model 6203 does not
normally use this control.
The Model 6203 FFSK output level for a radio communications interface should be set to
the radio manufacturer’s specification. It is normally recommended that the data signal
produce a 2.5 kHz deviation on FM or PM type transmitters. If you do not know what the
radio input level should be, stick with 1 Vpp (0.3 Vrms) unless the received signal is too
small at the other end. In that case, JP-5 may need to be moved to PWR. If the received
signal is radio born and distorted, use the RAD position for radio inputs which need to be
smaller than the level available with the TEL position.
Pot #
Name
Description
R108
FFSK Out
This pot adjusts the output level of FFSK transmissions.
R62
FFSK In
This pot is the secondary receive level adjustment for the
FFSK input.
R135
2-Wire RCV
This pot is not used for FSA systems. In should be turned
fully counter-clockwise.
R107
4-Wire RCV
This pot, along with R135, adjusts the receive signal level.
To start out it should be turned fully clockwise
R84
COR
This pot adjusts the COR detect circuit.
R86
VOX
This pot adjusts the VOX detect circuit and needs to be
adjusted regardless of the communication mode being used.
R63
MIC
This pot adjusts the handset mic input signal level.
R61
TONE
This pot adjusts the signal level of tones generated by the
Model 620x.
R137
AUX RX
This pot controls the input level of audio coming from the
AUX RX input. Set it in the center of its range.
R87
VOICE
This pot adjusts received signal levels that are routed to the
PA system and handset ear.
R64
EAR
This pot adjusts all signal levels routed to the handset
earpiece.
Содержание 025-9581M
Страница 1: ...Fire Station Alerting System Installation and Maintenance 025 9581M ...
Страница 6: ...6 025 9581M ...
Страница 40: ...Creating Console Positions 40 025 9581M ...
Страница 45: ...45 Installing the VoIP Gateway Server ...
Страница 78: ...Configuring Station Transponder Units 78 025 9581M ...
Страница 124: ...Installing the Station Transponder Units on Site 124 025 9581M ...
Страница 146: ...Using a Model 26 Fire Station Dispatcher for System Backup 146 025 9581M ...
Страница 188: ...Appendix C Using a Model 620x in a Model 26 based System 188 025 9581M ...
Страница 196: ...Fire Station Alerting System Installation and Maintenance 196 025 9581M ...