Digital Television Signal Analyzer Measurement Guide : ISDB‑T Signal Analyzer : Easy Measurement Setup
 
Easy Measurement Setup
Easy setup consists of a combination of minimal setup procedures and default measurement parameters. The reference level is automatically set. Mode, guard interval, and TMCC data are automatically detected and used for setting initial measurement values. For specific measurement settings, review Table: Common Items for All Easy Mode Measurements through Table: Spurious Emissions Measurement Items for Easy Mode in the section titled Easy Measurement Parameters. Spectrum Mask, Phase Noise, BER, and Spectrum Monitor measurements are completely preset, with no parameters that need to be set manually. For these four Easy Measurement mode measurements, the Meas Setup menu has no submenu keys.
General Easy Setup
1. Complete the antenna setup and the frequency and reference level configurations that are described in Quick Start Configuration, Setup, and Testing.
2. Press the Meas Selection main menu key, then press the More submenu key.
3. Press the Easy submenu key. A warning dialog box opens. Press Enter to continue, or press Esc to abort.
4. Press the Back submenu key to return to the Meas Selection (1/2) menu.
5. Select the desired measurement:
a. For Phase Noise, BER, or Spectrum Monitor measurements, press the desired submenu key. No further measurement setup is necessary, and the Meas Setup menu has no available submenu keys. Press either the Execute Measure or Start Measurement main menu key to begin testing.
b. For Field Strength, Modulation Analysis, Spectrum Mask, or Spurious Emissions, continue the setup by using one of the following measurement setup procedures:
Field Strength Measurement Setup
1. Press the Field Strength submenu key, then press the Meas Setup main menu key. In Easy Measurement mode, the Meas Setup menu has only one level with either 2 or 3 submenu keys, as described in the following steps.
2. Press the Impedance submenu key to select 50 ohm, 75 ohm, or Other. The selected setting is underlined. If Other is selected, then the Impedance Loss submenu key is also displayed in the menu. Press Impedance Loss to open the Impedance Loss Editor dialog box. Set the impedance to the desired value and press Enter.
3. Press the Antenna (Correction Level) submenu key to open the Select Antenna list box. Scroll to the desired Anritsu antenna model number, and when it is highlighted, press the Enter key.
4. Press the Execute Measure main menu key to begin testing.
 
Modulation Analysis Setup
1. Press the Modulation Analysis submenu key.
2. Press the Meas Setup main menu key. In Easy Measurement mode, the Meas Setup menu has only one level with either 2 or 3 submenu keys, as described in the following steps.
3. Press the desired Modulation measurement submenu key: Constellation or Delay Profile. The active measurement key has a red circle. If you activate Constellation, then the Sub‑carrier MER submenu key is also displayed.
a. To view the constellation graphs of Layer C and TMCC, press the Sub‑carrier MER submenu key so that Off is underlined.
b. To view the Sub‑carrier MER graph, press the Sub‑carrier MER submenu key so that On is underlined.
4. Press the Execute Measure main menu key to begin testing.
Spectrum Mask Setup
The Spectrum Mask setup is available when channel map is set to UHF (Brazil).
1. Press the Spectrum Mask submenu key.
2. Press the Meas Setup main menu key. In Easy Measurement mode, only the Filter Selection submenu key is displayed in the Meas Setup menu.
3. Press the Filter Selection submenu key to open the Select Filter dialog box. Use the Up/Down arrow keys or the rotary knob to scroll to the desired selection and then press Enter. Choose from Default or three user selections.
4. Press the Execute Measure main menu key to begin testing.
 
Spurious Emissions Setup
When entering the Spurious Emissions measurement mode, you may receive the following message:
<< Information >>
Set HPF to RF terminal.
Press ENTER to continue.
This message is advising you to insert a High Pass Filter (HPF) at the RF In port of your instrument. The purpose is to filter out the transmitted signal so that spurious emissions can be detected with greater sensitivity.
1. Press the Spurious Emissions submenu key.
2. Press the Meas Setup main menu key. In Easy Measurement mode (and Custom Measurement mode), only the HPF Loss submenu key is displayed in the Meas Setup menu.
3. Press the HPF Loss submenu key to open the HPF Loss dialog box. Use the Up/Down arrow keys or the rotary knob to scroll to the desired value and then press Enter. You may also use the numeric keypad to enter a value and then press either the dB submenu key or the Enter key. The HPF Loss step increments and range are listed in the dialog box.
4. Press the Execute Measure main menu key to begin testing.
Save the Test Results
Save measurements to file by pressing the Save Files main menu key. Refer to the section, Saving the Measurement Results for more information regarding saving files.
Easy Measurement Parameters
In Easy Mode (refer to Table: Common Items for All Easy Mode Measurements through Table: Spurious Emissions Measurement Items for Easy Mode), the parameters are automatically detected when measurement is performed. You do not need to set the measurement parameters other than basic setup. The following tables list parameter settings for the easy operation setup testing.
Common Items for All Easy Mode Measurements
Item
Initial Value
Channel Map
UHF or UHF (Brazil)
Channel
13 (UHF) or 14 (UHF(Brazil))
Frequency
473.142857 MHz
Reference Level
Automatically adjusted before measurement
Preamplifier
Automatically adjusted before measurement
Measure Selection
Field strength
Field Strength Measurement Items for Easy Mode
Item
Initial Value
Measurement Mode
Only continuous measurement (cannot be modified)
Average count
Unavailable (only for continuous measurement)
Impedance
50 ohm
Impedance Loss
0.0 dB
Antenna (Correction Level)
Value calculated from the table of antenna correction factors for the first antenna that is listed in the Select Antenna list box and also from the frequency
Modulation Analysis Measurement Items for Easy Mode
Item
Initial Value
Measurement Mode
Only continuous measurement (cannot be modified)
Average count
Unavailable (only for continuous measurement)
Display switch between Constellation and Delay Profile
Constellation
Mode, GI
Automatic Detection before measurement
TMCC Information
Automatic Detection before measurement
FFT Start
2/8 Fixed
Spectrum Reverse
Depends on channel map setting
Select Zoom
No zoom function
Zoom
No zoom function
Delay Profile Vertical Range
50 dB fixed (cannot be modified)
Frequency Response Vertical Range
50 dB fixed (cannot be modified)
Marker
No marker function.
Measurement Mode
Only continuous measurement (cannot be modified)
Spectrum Mask Measurement Items for Easy Mode
Item
Initial Value
Standard Line
UHF Standard B (P > 2.5 W) (cannot be modified)
UHF (Brazil) Critical (cannot be modified)
Floor reduction
On
Marker
No marker function
CW Frequency/Phase Noise Measurement Items for Easy Mode
Item
Initial Value
Meas Mode
Only for continuous measurement (cannot be modified)
Marker
No marker function
Integration
No Integration
Spurious Emissions Measurement Items for Easy Mode
Item
Initial Value
HPF Loss
0.0 dB
BER Measurement Items for Easy Mode
Item
Initial Value
Meas Mode
Only for continuous measurement (cannot be modified)
Spectrum Reverse
If Channel Map = IF, then initial value is On (cannot be modified)
All other conditions, initial value is Off
(cannot be modified)
Spectrum Monitor Measurement Items for Easy Mode
Item
Initial Value
Meas Mode
Only for continuous measurement (cannot be modified)
Impedance
50 ohm
Antenna (Correction Level)
Value calculated from the table of antenna correction factors for the first antenna that is listed in the Select Antenna list box, and also from the frequency