ARMA-C250-CRM
41
5.10
RF INPUT AND OUTPUT MONITOR PORTS
The input and output monitor ports on the front panel provide a means to measure input and
output signals (in dBm) using appropriate test equipment. The coupling loss normally associated
with RF sample, must be added to the power level measured at the sample port in order to obtain
the proper value for input or output power level.
The coupling loss may vary with frequency and the specific characteristics of the RF circuit.
Accordingly, a calibration chart is provided via the front panel display for each sample port. The
calibration chart for the port identifies the coupling loss at a number of frequencies across the
operating range of the amplifier. The loss associated with intermediate frequencies can be
obtained by interpolation.
5.10.1
M
ONITOR
C
ALIBRATION
C
HART
1.
To view the monitor calibration chart for the RF sample port on an amplifier, use the
[
]
and
[
]
keys on the front panel of the amplifier to access the Monitor Calibration sub-menu.
2.
Press
[Enter]
once to view the Output Monitor calibration chart. The display is capable of
showing one line of the calibration chart at a time. Use the
[
]
and
[
]
keys to scan the
chart in order to obtain the coupling loss associated with specific frequencies.
3.
Example: IF CALFACT for output monitor at 6.150 GHz = 40.2 dB, External Power Meter
measurement shows
Pm = +6.8 dBm, SSPA output power will be calculated as follow:
P
out
= Pm + |C| = 6.8 dBm + 40.2 dB = 47 dBm.
STATUS: ____
MONITOR CALIBRATION
STATUS: ____
MONITOR CALIBRATION
Содержание ARMA-C250-CRM
Страница 13: ...ARMA C250 CRM 12 Figure 1 Product Outline redundant system front and rear views...
Страница 14: ...ARMA C250 CRM 13 Figure 2 Waveguide Connections top view side view...
Страница 56: ...ARMA C250 CRM 55 Figure 12 Product Outline single unit...
Страница 57: ...ARMA C250 CRM 56 Figure 13 3 D View of the Redundant System in rack cabinet...
Страница 58: ...ARMA C250 CRM 57 Figure 14 Enlarged 3 D View of the Redundant System in rack cabinet...