Tektronix RFM150, Instruction Manual

Page: 77 / 278

Making Measurements
RFM 150 Instruction Manual 2–31
Making carrier-to-noise measurements.
Press MEAS, then select C/N.
The carrier-to-noise measurement screen (Figure 2–13) will be
displayed.
+35.0
dBuV
LOW
CHAN
43.4
VISUAL
C/N
LOW
PILOT MID
CHAN HIGH
CHAN
Chan 2
55.25 MHz
C/N
dB
(0.0)
(+4.0 MHz BW)
Visual carrier level
Carrier-to-noise ratio
Function keys are
assigned to
presets.
Outline indicates that the low
channel preset is being measured.
C: 76
534.03
The preset at F4
has been set to auto.
Figure 2–13: The carrier-to-noise measurement screen (analog channel)
The top line of the screen shows the channel number and frequency
of the channel being measured, along with the instrument mode
(C/N). The function key labels indicate the five presets.
Tuning.
You can use the knob, the numeric keypad, or the presets to
tune the instrument to the channel you want to measure. (For more
information, refer to Tuning on page 2–10 and Presets on page 3–14.)
Digital Channel. Before making any digital measurements, you must
set up a channel table as described on page 2–17. A sample digital
channel measurement is shown in Figure 2–14. The top measurement
is the average signal power, and the bottom measurement is the ratio
of desired to undesired signal.
Making Measurements
RFM 150 Instruction Manual 2–31
Making carrier-to-noise measurements.
Press MEAS, then select C/N.
The carrier-to-noise measurement screen (Figure 2–13) will be
displayed.
+35.0
dBuV
LOW
CHAN
43.4
VISUAL
C/N
LOW
PILOT MID
CHAN HIGH
CHAN
Chan 2
55.25 MHz
C/N
dB
(0.0)
(+4.0 MHz BW)
Visual carrier level
Carrier-to-noise ratio
Function keys are
assigned to
presets.
Outline indicates that the low
channel preset is being measured.
C: 76
534.03
The preset at F4
has been set to auto.
Figure 2–13: The carrier-to-noise measurement screen (analog channel)
The top line of the screen shows the channel number and frequency
of the channel being measured, along with the instrument mode
(C/N). The function key labels indicate the five presets.
Tuning.
You can use the knob, the numeric keypad, or the presets to
tune the instrument to the channel you want to measure. (For more
information, refer to Tuning on page 2–10 and Presets on page 3–14.)
Digital Channel. Before making any digital measurements, you must
set up a channel table as described on page 2–17. A sample digital
channel measurement is shown in Figure 2–14. The top measurement
is the average signal power, and the bottom measurement is the ratio
of desired to undesired signal.