Sound Devices A20-RX, User Manual

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To Tune Frequency:
1. Enter the Menu.
2. Select Frequency.
3. Select Tune.
4. Use the Left and Right buttons to set the frequency in MHz to the left of the decimal point. Values increment in 1 MHz
steps. Unavailable frequencies for the country of operation are not displayed.
5. Press the Center button to select the frequency and move the selector to adjust the kHz value.
6. Use the Left and Right buttons to set the frequency in kHz to the right of the decimal point. Values increment in 25 kHz
steps. Unavailable frequencies for the country of operation are not displayed.
7. Press the Center button to select the frequency and move the selector to Set.
8. Select Set to confirm the frequency or select the back arrow to cancel the frequency change and return to the Frequency
menu.
TV Channel Frequency Presets
To simplify frequency selection in the UHF Band (470 - 694 MHz, country dependent), frequencies are divided into channels and sub
channels. The specific frequencies corresponding to channels and sub channels depends on the Country setting (Main > Settings >
Country). Countries operate in either 6, 7, or 8 MHz spacing. On the A10-RX, this was labeled X, Y, and Z respectively.
● Channel - corresponds to broadcast television channels.
● Sub Channel - channels are divided in 400 kHz increments called sub channels to speed up frequency selection.
● Frequency - specific frequencies within the receivers tuning range can be selected in 25 kHz increments. When a selected
frequency does not correspond with a TV Channel Frequency Preset, an asterisk character (*) is shown in the display
adjacent to TV channel/sub channel assignment.
TV Ch is not displayed or accessible throughout the A20-RX user interface when Band falls outside of the UHF band (470-694 MHz,
country dependent).
To change frequency using TV Channel Frequency Presets:
1. Press the Center button to enter the Menu.
2. Select Frequency to enter the Frequency menu. Be sure that Band set to operate within UHF (470-694 MHz, country
dependent.
3. Highlight ‘TV Ch’, then press the Center button to change the TV Channel Frequency Preset.
4. Highlight ‘TV Ch’ then press the Center button to edit the TV Channel.
5. Use Left and Right buttons to adjust the ‘TV Ch’ value then press the Center button to select the value.
6. Highlight ‘Sub Ch’ then press the Center button to edit the sub-channel.
7. Use Left and Right buttons to adjust the ‘Sub Ch’ value then press the Center button to select the value.
8. Highlight ‘Set’ then press the Center button to set the frequency to the TV Ch Frequency Preset.
Frequency Scanning
The frequency scanning tool uses the radios in the A20-RX to display RF signal level within the selected scan range. This helps
locate available frequencies. The scan tool operates over the selected bandwidth of the receiver.
Channel 1 and 2 audio is muted while scanning.
Scan Options
The frequency range scan options vary depending on country.
● Auto - Scans the current Tuning Band and automatically assigns frequencies to the Rx Channel(s). See Frequency
AutoAssign for more information.
● Band - Scans the current Tuning Band.
● UHF - Scans the entire UHF spectrum (470-694 MHz, country dependent).
● UHF 1 - Scans the first half of the UHF band (470-578 MHz).
● UHF 2 - Scans the second half of the UHF band (578-694 MHz).
● Other Bands - Lists all Bands available in your country from lowest to highest frequencies. Scans are performed on the
frequency range displayed. Performing a scan does not change the Band of operation.
● User Scan - When user groups are in use, the User Scan option is available in the Scan menu. This options scans only
frequencies of the loaded user group. See User Groups for more information.
To perform an RF Scan:
1. Enter the menu and select Scan.
2. Select the Scan option for the frequency range you want to operate in. The scan starts automatically.
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