Anrtisu Cell Master MT8212B, Руководство пользователя, Страница: 218 / 294

Bias Tee (Option 10A)
Option 10A provides a bias tee installed inside the MT8212B Cell Master. The bias arm is
connected to a 12-24 Vdc (variable in 1V increments) power source that can be turned on as
needed to place the voltage on the center conductor of the
RF In
port. This voltage can be
used to provide power to block down-converters in satellite receivers, and to power some
tower mounted amplifiers.
The bias can be turned on when the instrument is in either Spectrum Analyzer or Transmis-
sion Measurement (Option 21) mode. When bias is turned on, the bias voltage and current
are displayed in the upper left corner of the display. The 12-24 Vdc power supply is de-
signed to deliver 6 Watts maximum, continuously.
Procedure
Step 1. Press the SYS key, then the
Application Options
soft key.
Step 2. Select the
Bias Tee
soft key.
Step 3. Select the
Bias Tee Voltage
soft key and use the number keys or the Up/Down
arrow keys to set the bias tee voltage between 12 and 24 Vdc, in 1V increments.
Step 4. Select the
Bias Tee On/Off
soft key to turn the bias voltage on. The state of the
bias tee will be saved with the runtime setup.
Step 5. Press the
Bias Tee On/Off
soft key again to turn the bias tee voltage off.
NOTE: If power to the Bias Tee exceeds 6 Watts maximum continuous opera-
tion, the Bias Tee relay will open and a fault message will be displayed.
11-4
Chapter 11 Transmission Measurement