VEMCO – VR100 Manual 28 May 2018 61
6.5 Front Panel Explanations
The explanations given below correspond with the photo of the VR100 face plate found in section 1.5.4.
Audio speaker
The speaker allows the pings received from acoustic tags on the active channel to be heard when the
VR100 is in Monitor mode (see section 4.2); when the VR100 is not in monitor mode, the audio is muted.
The sound can be muted within the Monitor screen (see section 4.2.1) and can be adjusted with the
volume buttons.
Detection indicators
A detection indicator flashes a green light each time a ping is detected by the receiver. Each detection
indicator is numbered and corresponds to a receiver channel (see section 2.3). When a ping is received
on a channel, the corresponding detection indicator light will flash. For example, if indicator 2 flashes
then we know that channel 2 received a ping.
NOTE: More than one detection indicator can flash at the same time if more than one channel is active
(turned on) and pings are simultaneously received on those channels. For example, if channels 1 through
3 are set up for different continuous tag types on 60 kHz then all three detection indicators will flash
when a ping is received on 60 kHz.
If “Tx” light flashes red while green lights are flashing, the VR100 is sending, or transmitting, pings to a
receiver during acoustic communication.
LCD screen and three related buttons
The LCD screen is used to monitor tags and to configure the VR100. The use of the screen and the three
buttons immediately below it is explained in section 1.5.5.
Up/Down buttons
The up and down buttons are used to move a cursor through a list displayed on the LCD screen (see
section 1.5.5).
Volume control
The volume control will increase or decrease the volume of the audio signal heard from either the speaker
or the headphones. The button marked with a plus symbol (+) increases the volume and the button with
the negative symbol (-) decreases the volume. The buttons can be held down or pressed repeatedly for a
larger change in volume. The Monitor screen (see section 4.2.1) displays the volume level as “VOLXX”
where the XX represents a numeric volume level.
Gain Control
The gain control buttons will increase or decrease the gain level in steps of six decibels (6 dB). The
button marked with a plus symbol (+) increases the gain by 6 dB and the button with the negative symbol
(-) decreases the gain by 6 dB.
LOG GPS button
The LOG GPS button is used for manual GPS recordings. If the GPS is locked at the time the LOG GPS
button is pressed, then the position will be recorded within 1 second. If GPS is not locked, then a reading
will not be stored and warning will appear on the screen to indicate GPS is not locked.
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