Vemco VR100 - Page 55

VEMCO – VR100 Manual 28 May 2018 49
j. Channel Status (HR2 only) – reports the signal and noise values in dB for the transponding
channel.
2. Settings
a. Power Level… – refers to the transmit power of the remote receiver unit (VR2Tx, VR2AR, or
HR2) back to the VR100 at the surface (see section 6.2.1).
i. Read power level – reports the current power setting
ii. Set power level – allows you to change the power setting. Maximum power level 4
(“very high”) is recommended for the majority of communication situations. Reducing
the power level may be desired if the receiver is within close range of the transponding
hydrophone.
b. Synctag… – Allows you to read and set up the sync tag power and transmit mode.
i. Read Profile – reports the current power and profile setup for tag transmissions from the
receiver.
ii. Setup Profile… – select the transmit power level from 1 (low) to 4 (very high), and the
tag profile of the tag transmissions from the receiver. The available tag profiles are:
1. Don’t Change
2. Synctag: VR2AR/VR2Tx transmits randomly between 540 to 660 seconds; nominal
is 600 seconds, or 10 minutes. HR2 PPM is 270 to 330 seconds; nominal is 300
seconds or 5 minutes. HR is 25 to 35 seconds; nominal is 20 seconds.
3. RangeTestRand: VR2AR/VR2Tx transmits randomly between 60 to 120 seconds;
nominal is 90 seconds. HR2 PPM is 25 to 35 seconds; nominal is 30 seconds. HR is
4 to 6 seconds; nominal is 5 seconds.
4. RangeTestFixed: VR2AR/VR2Tx transmits at a fixed rate of 90 seconds. HR2 PPM
is 30 seconds, HR is 5 seconds.
5. Off (does not transmit an ID code)
iii. Read ID (HR2 only) – read the PPM and/or HR2 sync tag IDs.
iv. Transmissions (HR2 only) – report the number of sync tag transmissions (PPM+HR,
PPM, or HR) since initialization (total transmits), since offload, or since marking.
c. Noise… – displays ambient noise in the area, which may be helpful in deciding if a deployment
location is too noisy for reliable tag detections. NOTE: For the HR2 receiver, you can select
between RMS, PPM, or HR noise.
i. Setup & Start… – setup a sample rate (in seconds) and the number of samples to be
taken.
ii. Stop & Read – retrieve the minimum, maximum, and average noise readings taken.
d. Mark – leaves an electronic “mark” in the internal memory, for both the detection counter and
the ping counter. This must be used before using the “Since Marking” feature. This also clears
all detection counts from the Watch Table.