OEM729 Electrical and Environmental Specifications

OEM729 Environmental Specifications

Operating Temperature

-40°C to +85°C

Storage Temperature

-55°C to +95°C

Humidity

95% non-condensing

Random Vibration

MIL-STD-810G, Method 514.6, Category 24 (20 g RMS)

Sinusoidal Vibration

IEC 60068-2-6

Bump

ISO 9022-31-06 (25 g)

Shock

Operating

Non-operating

 

MIL-STD-810G, Method 516.6 (40 g)

MIL-STD-810G, Method 516.6 (75 g)

Acceleration

MIL-STD-810G (CH1), Method 513.7, (16 g)
OEM729 Power Requirements

Voltage

+3.3 VDC ±5%

Allowable Input Voltage Ripple

100 mV p-p maximum

Power Consumption

0.9 W typical, GPS L1 only

1.3 W typical, GPS L1/L2, GLONASS L1/L2

1.8 W typical, all constellations, all frequencies, plus L-Band

These are typical values using serial ports without interference mitigation. These values can change with the number of satellites in view, firmware version, data logging rates and features in use. Use them as a guide for what you might expect but not as absolute values

Inrush Current

2.0 A for less than 1.8 ms (typical)
OEM729 RF Input/LNA Power Output

Antenna Connector

MMCX female, 50 Ω nominal impedance

Cascaded antenna
LNA gain (before receiver)

Firmware 7.04 and later

HDR disabled

+15 dB to +55 dB, 26 dB typical

HDR enabled

+20 dB to +55 dB, 30 dB typical

Firmware before 7.04

HDR disabled

+15 dB to +40 dB, 26 dB typical

HDR enabled

+20 dB to +40 dB, 30 dB typical

RF Input
Frequencies

GPS L1:

GPS L2:

GPS L5:

1575.42 MHz

1227.60 MHz

1176.45 MHz

GLONASS L1:

GLONASS L2:

GLONASS L3:

1593-1610 MHz

1237-1254 MHz

1202.025 MHz

Galileo E1:

Galileo E5a:

Galileo E5b:

Galileo E5:

Galileo E6:

1575.42 MHz

1176.45 MHz

1207.14 MHz

1191.795 MHz

1278.75 MHz

BeiDou B1I:

BeiDou B1C:

BeiDou B2I:

BeiDou B2a:

BeiDou B2b:

BeiDou B3I:

1561.098 MHz

1575.42 MHz

1207.14 MHz

1176.45 MHz

1207.14 MHz

1268.52 MHz

L-Band:

1545 to 1560 MHz1

LNA Power

+5.0 VDC ±5%, 0 mA to 200 mA (supplied by card through center conductor of RF connector).

LNA Power is generated from the 3.3 V supply input for the OEM729.
OEM729 External Oscillator Input

External Oscillator Connector

MMCX female, 50 Ω nominal impedance

External Clock input

Refer to the EXTERNALCLOCK command

Frequency

5 MHz or 10 MHz

Input Impedance

50 Ohm nominal

Input VSWR

<2:1

Signal Level

0 dBm minimum to +13.0 dBm maximum

Frequency Stability

±0.5 ppm maximum

Wave Shape

Sinusoidal