6.2.3
Satellite Tracking
12 channel, C/A code (1575.42 MHz). Receiver simultaneously tracks
up to twelve satellites.
6.2.4
Acquisition
Acquisition times may be longer with a restricted view of the sky.
• 150 seconds typical, cold start
• 15 minutes, 90 % confidence, cold start
• 40 seconds, with almanac less than 1 month old
• 15 seconds, with ephemeris less than 4 hours old
6.3
I/O Configuration
6.3.1
Outputs
Three high-drive 5 Vdc (250 mA at
>
4 V) and one analog, modulated
IRIG-B (4.5 Vpp through 19.6 ohm source resistor); all terminal strip
connectors.
• Output 1: Programmable Pulse A
• Output 2: IRIG-B00x level-shift
• Output 3: Programmable Pulse B
• Output 4: IRIG-B12x analog
6.3.2
Programmable Pulse Output
Two programmable pulse outputs, Prog. Pulse A and Prog. Pulse B are
available at separate terminal connectors.
Modes
Most pulse modes (listed below) allow an adjustable pulse width and
pulse delay. Pulse duration is programmable from 0.01 seconds to 24
hours in 10 millisecond increments, except in one-shot mode, where the
output is TTL LO prior to the specified time and HI thereafter.
• Pulse per Second
• Pulse per Minute
• Pulse per Hour
• Pulse per Day
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