Olson Technology OT-1000-HH Rev.X4 - Manual (Page 16)

025-000573 Rev. X4 - 16 - www.olsontech.com
RF Input Signal
For proper operation, an appropriate RF input signal within the specifications as given in this section should
be applied at the input port.
The OT-1000-HH has a built-in RF power meter function, which monitors the total level at the input of the
transmitter. This level depends on the number of carriers and their modulation scheme (AM-TV, FM-radio,
8VSB, and QAM). The input monitor controls the “RF” LED. As long as the input level is within the AGC
range of the transmitter to obtain the specified total RMS modulation index (see below: AGC-On mode), the
input LED is Green
• Typically, spectrum analyzers are used to measure the level of one carrier whereas the RF power meter
function of the transmitter measures the total RMS (root mean square) power of all carriers together.
There are two principal modes (AGC-On/Off: automatic gain control on/off), which can be selected in order
to operate the OT-1000-HH. Selection can be performed via an optional NEC (network element controller).