Lectrosonics UCR411a User Manual download pdf (Page 14)

UCR411A

LECTROSONICS, INC.

To start the scanning, press both SEL Up/Down buttons

and the MENU button at the same time. The display will

switch to the SCAN WINDOW and start scanning im-

mediately. Data gathered during a scan is stored until it

is purposely erased or the power is turned off. Previous

data will remain and subsequent scans can be made

to search for additional signals or to accumulate higher

peaks.

To stop scanning, press the MENU button once. The

scanning will stop immediately, and the display will

switch to the VIEW window. In this window, each verti-

cal band of the display represents 8 frequencies (800

kHz). Pressing the SEL Up or Down buttons will scroll

the cursor coarsely across the tuning range. The trans-

mitter switch settings matching the frequency indicated

by the cursor are shown in the upper right corner of the

screen.

Spectrum data is collected only when the receiver is

scanning. Successive scanning with repeated passes

through the tuning range will accumulate the highest

peaks encountered to aid in ﬁnding clear frequencies.

To clear the scan memory without leaving scan mode,

turn the power switch off and back on quickly.

Pressing the MENU button once will shift the display to

the FINE VIEW window which will show an expanded

portion of the spectrum around the cursor.

In the FINE VIEW window, each vertical band repre-

sents one frequency the UCR411A is capable of tuning.

The upper right corner shows the transmitter switch

settings for the frequency indicated by the cursor. In

this screen, a vertical center bar is the cursor. Under-

neath the switch settings are two arrows to remind you

that this is a partial picture of the spectrum and that you

can scroll left or right to view the entire spectrum of the

receiver by pressing the SEL Up and Down buttons.

Pressing the SEL Up button will make the display scroll

left, showing higher frequencies. Pressing the SEL

Down button will make the display scroll right, showing

lower frequencies. The cursor remains in place while

the display scrolls left or right

In addition to assessing the congestion within the RF

tuning range of the receiver, the scanning mode is also

used to ﬁnd a clear operating frequency. Scroll through

the screen and ﬁnd a frequency where no RF signals

are present (or in the worst case, only very weak RF

signals). With the cursor on this frequency, simultane-

ously press the SEL Up, Down and MENU buttons to

leave the scan mode.

Frequency Scan Mode

When leaving the scan mode, you are given the option

of using the frequency the unit was on before entering

the scan mode, or using the frequency just selected in

the scan mode. The display shows USE OLD and USE

NEW to prompt you to make a frequency selection. To

accept the new frequency just selected in the scan

mode, press the SEL Down button for USE NEW. To

return to the frequency you were using before entering

the scan mode, press the SEL Up button for USE OLD.

(The MENU button defaults to USE OLD).

Once you leave the scan mode, the Frequency Window

will be displayed. Set your transmitter switches to the

same settings as shown on the display and your system

will be ready for operation.

Scan & VIEW WINDOW Elements

Switch Settings - shows the

transmitter switch settings -

will change rapidly while the

unit is scanning.

Cursor - shows relative position

of the scanner within the 25Mhz

band of the receiver.

Scan level indications -

showing relative level of RF

activity across the 25MHz

bandwidth of the receiver.

Remaining unscanned

part of band.

Fine VIEW WINDOW Elements

RF Level indicators

Transmitter

Switch Settings

Cursor (center bar)

SCROLL reminders

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 27 28

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Lectrosonics UCR411a User Manual Page 14

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