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Installation and Setup Chapter 2
DL-V3 User Manual Rev 3 39
2.2.5 Antenna LNA Power
Receiver RF input gain requirements are easily met when using NovAtel antennas and coaxial cables.
NovAtel antennas employ a built-in, low-noise amplifier (LNA), which typically provides 26 dB of
gain to the received satellite signal. The power to the antenna LNA is provided through the center
conductor of the receiver’s RF port. To achieve the required input gain to the receiver, NovAtel
coaxial cables have been designed to exhibit no more than 6 dB loss.
CAUTION NovAtel guarantees performance specifications only using NovAtel antennas.
2.2.6 DL-V3 Removable Compact Flash Memory Card
Data commands and logs can be recorded from the DL-V3 to a removable Compact Flash (CF) card.
The need for a companion handheld data logger is avoided when continuous user interaction is not
required, since the DL-V3 is capable of logging data according to pre-configured parameters without
any user intervention. In applications when continuous user interaction is required, a simple handheld
controller can be used with the DL-V3, as the controller does not require its own data logging
memory. The reduced handheld data logger or controller requirement simplifies your system and
reduce its total cost and power consumption. By default only a log group named default exists. A
powerup group must be created to take advantage of the automatic functionality, refer to Appendix
B, Commands starting on Page 81 for more information.
WARNING: To minimize the possibility of damage, always keep the CF card cover closed and
latched except when exchanging CF cards. Do not change the card while
logging is in progress. Data will be lost. It is not necessary to turn the receiver
off before inserting or extracting a CF card if you are not logging data.
An example of a 64 MB CF card is shown in Figure 15 below.
Figure 15: 64 MB Flash Card
When you insert a CF card into the DL-V3, enter a DISK FORMAT command using the Console
window in NovAtel’s Control and Display Unit (CDU) graphical user interface software. Wait a few
minutes and use the DL-V3 power button to turn it off and then on again. When power is returned, the
DL-V3 should be able to recognize and use the CF card. For more information on CDU refer to its on-
line Help file.