Poseidon-1 passes / cycles
Onboard Topex/Poseidon, the Poseidon-1 altimeter shared the same antenna as Topex; thus only one altimeter operated at any given time. Poseidon-1 operated about 10% of the time.
During verification phase (until cycle 019), the antenna sharing plan were based on a repeated pattern consisting of a set of five 10-day cycles (Poseidon on: cycle 1, passes 018 to 044, passes 220 to 246; cycle 3, passes 220 to 254; cycle 4, passes 001 to 044 and cycle 5, passes 220 to 246).
From cycle 020 to 307, Poseidon has been on for one cycle in ten. Next Poseidon-1 cycle (361) was during Jason-1 calibration phase.
| Cycle (N/A) | (Aug 21 - Aug 25, 1992) | |
| Cycle (N/A) | (Sep 11 - Sep 14 1992) | |
| Cycle 000 | (Sep 21 - Sep 23 1992) | passes 215-254 |
| Cycle 001 | (Sep 23 - Sep 24 1992) | passes 000-022 |
| Cycle 001 | (Oct 01 - Oct 02 1992) | passes 219-245 |
| Cycle 003 | (Oct 21 - Oct 22 1992) | passes 221-254 |
| Cycle 004 | (Oct 22 - Oct 24 1992) | passes 000-044 |
| Cycle 005 | (Nov 10 - Nov 11 1992) | passes 219-245 |
| Cycle 006 | (Nov 12 - Nov 13 1992) | passes 018-046 |
| Cycle 006 | (Nov 20 - Nov 21 1992) | passes 219-245 |
| Cycle 008 | (Dec 10 - Dec 11 1992) | passes 219-254 |
| Cycle 009 | (Dec 11 - Dec 13 1992) | passes 000-046 | Cycle 011 | (Jan 08 - Jan 09 1993) | passes 219-245 |
| Cycle 012 | (Jan 11 - Jan 11 1993) | passes 021-046 |
| Cycle 012 | (Jan 18 - Jan 19 1993) | passes 217-243 |
| Cycle 013 | (Jan 28 - Jan 30 1993) | passes 214-254 |
| Cycle 014 | (Jan 30 - Jan 31 1993) | passes 000-045 |
| Cycle 015 | (Feb 17 - Feb 18 1993) | passes 217-247 |
| Cycle 016 | (Feb 19 - Feb 20 1993) | passes 020-048 |
| Cycle 016 | (Feb 27 - Feb 28 1993) | passes 218-244 |
| Cycle 020 | (Mar 30 - Apr 09 1993) | passes 006-254 |
| Cycle 031 | (Jul 17 - Jul 27 1993) | all passes (001-254) |
| Cycle 041 | (Oct 24 - Nov 03 1993) | all passes (001-254) |
| Cycle 055 | (Mar 12 - Mar 22 1994) | all passes (001-254) |
| Cycle 065 | (Jun 19 - Jun 29 1994) | all passes (001-254) |
| Cycle 079 | (Nov 05 - Nov 15 1994) | all passes (001-254) |
| Cycle 091 | (Mar 04 - Mar 14 1995) | all passes (001-254) |
| Cycle 097 | (May 03 - May 12 1995) | all passes (001-254) |
| Cycle 103 | (Jul 01 - Jul 11 1995) | all passes (001-254) |
| Cycle 114 | (Oct 18 - Oct 28 1995) | all passes (001-254) |
| Cycle 126 | (Feb 14 - Feb 24 1996) | all passes (001-254) |
| Cycle 138 | (Jun 12 - Jun 21 1996) | all passes (001-254) |
| Cycle 150 | (Oct 09 - Oct 19 1996) | all passes (001-254) |
| Cycle 162 | (Feb 05 - Feb 15 1997) | all passes (001-254) |
| Cycle 174 | (Jun 04 - Jun 14 1997) | all passes (001-254) |
| Cycle 180 | (Aug 03 - Aug 12 1997) | all passes (001-254) |
| Cycle 186 | (Oct 01 - Oct 11 1997) | all passes (001-254) |
| Cycle 197 | (Jan 18 - Jan 28 1998) | all passes (001-254) |
| Cycle 209 | (May 17 - May 27 1998) | all passes (001-254) |
| Cycle 216 | (Jul 26 - Aug 04 1998) | all passes (001-254) |
| Cycle 224 | (Oct 13 - Oct 23 1998) | all passes (001-254) |
| Cycle 234 | (Jan 20 - Jan 30 1999) | all passes (001-254) |
| Cycle 246 | (May 19 - May 29 1999) | all passes (001-254) |
| Cycle 256 | (Aug 26 - Sep 05 1999) | all passes (001-254) |
| Cycle 266 | (Dec 03 - Dec 13 1999) | all passes (001-254) |
| Cycle 278 | (Mar 31 - Apr 10 2000) | all passes (001-254) |
| Cycle 289 | (Jul 18 - Jul 28 2000) | all passes (001-254) |
| Cycle 295 | (Sep 16 - Sep 26 2000) | all passes (001-254) |
| Cycle 307 | (Jan 13 - Jan 23 2001) | all passes (001-254) |
| Cycle 361 | (Jul 2 - Jul 12 2002) | all passes (001-254) |
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