EndRun Tempus LX GPS, User Manual

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T e m p u s L X G P S U s e r M a n u a l 91
"Smarter Timing Solutions"
Appendix
H
Specifications
GPS Receiver:
L1 Band – 1575.42 MHz
8 Channels, C/A Code
Antenna:
TNC jack on rear panel, Zin = 50Ω
In35 dB gain LNA with bandpass filter for out-of-band interference rejection.
Rugged, all-weather housing capable of operation over –40°C to +85°C temperature extremes
Mounting via 18” long, 3⁄4” PVC pipe with stainless steel clamps.
50’ low-loss RG-59 downlead cable standard.
Extension cables and low noise pre-amplifiers are available as options.
Local Oscillator:
TCXO is standard (2.5 x 10
-6
over -20° to 70° C).
Options: Medium-Stability OCXO (4x10
-9
over 0 to 70° C).
Rubidium (1x10
-9
over 0 to 70°C).
Stratum 1 Holdover Performance: 24 Hours - TCXO
35 Days - MS-OCXO
140 Days - Rubidium
Time to Lock:
< 5 minutes, typical (TCXO).
< 10 minutes, typical (OCXO/Rb).
Alphanumeric Display/Keypad:
Display: Brilliant 16x280 dot-matrix vacuum-fluorescent.
Keypad: Enter, Back, Edit, Right, Left, Up, Down, Help.
Network I/O:
Rear panel RJ-45 jack
AMD PC-Net Fast III 10/100Base-T ethernet
System Status Indicator:
Sync LED: Green LED pulses to indicate GPS acquisition and lock status.
Network LED: Amber LED indicates network activity.
Alarm LED: Red LED indicates a fault condition.
Maintenance Console:
RS-232 serial I/O on rear panel DB9M plug for secure, local terminal access.
Parameters fixed on 19200 baud, 8 data bits, no parity, 1 stop bit.
See RS-232 Serial I/O Port Signal Definitions in Chapter 6 for more information.