Tektronix NetTek YBT250, User Manual

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YBT250 Field Transmitter & Interference Tester User Manual
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GPS
Using a GPS (Global Positioning System) receiver with the YBT250
lets you record geographical location, time, and date information
with your measurement results. The YBT250 is compatible with
off-the-shelf NMEA-compliant GPS receivers (PCMCIA card type or
GPS receivers with an RS232 serial output capability) to obtain and
record measurement location and time.
The Tektronix YBGPS1 GPS Timing Reference, in addition to
providing standard geographic location information, also provides a
Timing Reference signal for taking cdma2000 (Option CS1) or
1xEV-DO (Option ES1) over-the-air (OTA) signal measurements, as
well as improving carrier frequency measurement accuracy for
applicable measurement options.
GPS Receiver Requirements
H
You can use any GPS receiver that supports NMEA 0183 V2.0.
H
The GPS receiver must output the $GPRMC, $GPGGA,
$GPGSV, and $GPGSA sentences on a regular basis.
H
The YBT250 reads the GPS receiver position data once per
second, or at the rate the GPS receiver sends the $GPRMC,
$GPGGA, $GPGSV, and $GPGSA sentences, whichever is
slower.
H
You can connect a GPS receiver to the NetTek Analyzer Platform
using a serial (RS--232) port connection (at 4800 baud rate), or
the NetTek Analyzer Platform PCMCIA slot to emulate a serial
port on COM4.
H
Over-the-air measurements require that you use the Tektronix
YBGPS1 GPS Timing Reference, and have YBT250 option CS1
(cdma2000) or Option ES1 (1xEV-DO) installed.