Service manual

User Manual SD125E
Page 12
English
Features
Channel Spacing
The SD-125E is capable of programmable channel spacing, in both UHF and VHF bands. Each
channel can be programmed via the PC programmer, ACC-900E, having 12.5 KHz or 25 KHz
channel spacing.
Output Power
RF Power is programmable in the SD-125E. Each channel can be programmed via the PC
programmer to a high-power output, 5 Watts, or low-power output, 1 Watt.
Busy Channel Lockout
Busy Channel Lockout – ON: Upon PTT enable, if carrier is present, the radio will not transmit.
Busy Channel Lockout – OFF: Upon PTT enable, the radio will transmit regardless of the presence
of carrier.
TX Time-out timer
This feature, when enabled, limits the amount of time that the user can continuously transmit.
This time can be set in increments by 10 seconds from 10 seconds to 120 seconds. If the user
attempts to transmit longer than the TX Time-out period, five seconds prior to expiration, the
radio will release Time-out alert signal through pin 9 of the DB-15 connector and will cease
transmission.
Power Save
The Power Save function (PS) is used when an external battery is used as the power source.
When Power Save is enabled, the receiver PS on time can be set in 50 second increments up to
9950 seconds and PS OFF time can be set in 20 second increments up to 160 seconds. A delay
time can also be programmed in 1 second increments up to 8 seconds, this is the delay of PS
start time after a period of inactivity, programmed and allows the operator to set the length of
time the receiver.