DOC 6501_Release V
ATS-6501 Users Guide
2
Rubidium reference and includes two 1 PPS/DC IRIG, one 10 MHz, and one AM IRIG output
module. A dual frequency GPS antenna is included with unit.
Option D (DC Power Input): Provides DC input (-48 VDC (SELV type) (-18 to -60 VDC))
capability instead of AC for one of the supplies. The second power supply is still AC.
Option D2 (Dual DC Power Input): Provides dual DC input (-48 VDC (SELV type) (-18 to -60
VDC)) capability instead of AC.
Option F (Front Panel Memory Card): Provides access to the unit’s non-volatile memory via the
front panel. This option allows users to perform a complete software upgrade in the field without
returning the unit to Microsemi. Additionally, the unit can be declassified by simply removing
the flash card from the system.
Option R (Internal Rb Reference): Integrates an internal Rubidium (Rb) frequency reference as
part of the unit. This allows the unit to operate without using an external frequency reference as
well as steer the internal reference based upon the clock offset and GPS measurements.
Option –S00 (SAASM Unit): Replaces the Standard L1/L2 GPS Receiver with the SAASM
version. The unit will also have the internal Rb as well as the front panel flash.
Input/Output Cards: The ATS-6501 has a wide selection of input/output cards available:
1. 4376A RS-422 1PPS Card, 4 PPS Output Card
2. 4391A Code Generator Card
3. 4395A-10 Four 10 MHz Sinewave Outputs
4. 4395B-10 Four Low Phase Noise 10 MHz Sinewave Outputs
5. 4395A-5 Four 5 MHz Sinewave Outputs
6. 4395B-5 Four Low Phase Noise 5 MHz Sinewave Outputs
7. 4395A-1 Four 1 MHz Sinwave Outputs
8. 4395B-1 Four Low Phase Noise 1 MHz Sinewave Outputs
9. 4394A: Programmable PPS and DC IRIG Module. Users can define the signal types
and operating parameters. Default set up is two 1PPS Outputs (Ports 1 and 2) and
two DC IRIG Outputs (Ports 3 and 4) (Default Timecode = B000)
10. 4394A-ECL Two Programmable differential PPS-ECL Outputs
11. 4387A Four Modulated IRIG Outputs (Default Timecode = B120) or NASA36.
12. 4387A-1V Four 1V Modulated IRIG Outputs (Default Timecode = B120) or
NASA36