Product manual

Appendix D: Setting Model 6 and Model 26 Audio Levels
110 025-9158L
• As an alternative to an oscilloscope, a DVM with True RMS capability down to
the millivolt level
• For setting RF levels in a radio-based system , a service monitor is required to
check/set channel deviation levels
• The Model 6 Station Transponder Product Manual (part number 025-9157) and
the Model 26 Fire Station Dispatcher Product Manual (part number 025-9158)
• One Model 26 Dispatch Panel
• At least one unit of Model 6 Station Transponder unit
• Again, this will be needed at both locations, a desktop or laptop computer
running a serial terminal emulation application to control the Model 26 or Model
6 during the procedure, the settings should be: 9600 baud, 8-bit words, 1 stop-bit,
no parity checking, and flow control set to none
• Cable (part number 709-7208) for connecting between the computer serial ports
and the Model 26 or the Model 6.
• A land line, cell phone, or radio link between both locations so that instructions
can be passed between the dispatch center equipment room and the fire station at
which the Model 6 is located
Tip
Do not try to set the Model 26 or station transponder FFSK levels
based on the packets exchanged during normal polling. To do so
can lead to erroneous level settings. Only set levels while using
the FFSK test tones generated by both units.
Initial Conditions
• The Model 26 has been programmed as necessary and interfaced to either its
radio or wire line connection
• The Model 6 station transponder units have been programmed and interfaced to
their radios or wire line connections at the station locations
• The necessary personnel are at both the Model 26 and Model 6 locations, there
are computers connected and ready to enter the serial programming mode to
place the units in the FFSK test mode when required
• The system is quiet (no traffic) and expected to remain so long enough to allow
the level setting procedure to be completed