Status Indicator; External Oscillator; Antenna Lna Power - Novatel OEM6 Series User Manual

Chapter 4
A number of pins on the OEM638 card can have multiple functions. Refer to the
638
IOCONFIG
Family Firmware Reference Manual
4.7.4

Status Indicator

OEM6 family receiver cards have an LED indicator to provide receiver status.
Refer to Figure 8, OEM615 Connector and Indicator Locations on Page 28
615
Refer to Figure 9, OEM617D Connectors and Indicators on Page 29
617D
Refer to Figure 10, OEM628 Connector and Indicator Locations on Page 29
628
Refer to Figure 11, OEM638 Connector and Indicator Locations on Page 30
638
The LED blinks green on and off, approximately once per second, to indicate normal operation. If the
indicator is red, the receiver is not working properly. The indicator's operation is described in Chapter 5,
Built-In Status Tests on page 68.
Refer to Table 5, FlexPak6 Status Indicators and Connector Labels on page 40 for
FPk6
FlexPak6 details.
4.7.5

External Oscillator

For applications requiring greater precision than what is possible using the on-board Voltage Controlled,
Temperature Compensated Crystal Oscillator (VCTCXO), the OEM628 or OEM638 may need to be
connected to an external, high stability oscillator, at 5 MHz or 10 MHz.
FPk6
617D
The OEM615, OEM617D and FlexPak6 do not have an external oscillator connection.
615
Connect a cable from the external oscillator to the receiver's external oscillator input connector. For the
OEM628 and OEM638, a MMCX female connector (J101) is used as shown in Figure 10 and Figure 11.
The receiver does not have to be powered down during this operation. However, if handling a card
directly, observe anti-static practices. The OEM628 and OEM638 input impedance is 50 ohms.
When the external oscillator is installed, use the
Firmware Reference Manual
ovenized crystal) and frequency.
4.7.6

Antenna LNA Power

NovAtel antennas and coaxial cables meet receiver RF input gain requirements. NovAtel antennas are
equipped with built-in LNAs that provide 26 dB of gain to the satellite signal received. The power to the
antenna LNA is provided through the receiver's RF port center conductor. To achieve the required input
gain to the receiver, NovAtel coaxial cables are designed to introduce no more than 10 dB loss. Antenna
supply over current protection limits the LNA power.
64
, EVENTINCONTROL and
(OM-20000129) for details) to set the clock type (e.g: cesium, rubidium or
OEM6 Family Installation and Operation User Manual Rev 7
Operation OEM6 Cards and Enclosure
EVENTOUTCONTROL
(OM-20000129) for details.
EXTERNALCLOCK command (refer to the
commands in the OEM6
OEM6 Family