Objectives:

Power on and perform a full high-temperature ramp on the sample in TA7, which has been previously heated via a mid-temperature ramp. This sample had a plugged frit during the low and mid-T runs, and is assumed to be plugged here. The purpose of this run is to look for the enthalpy associated with decomposition of altered minerals and to measure the gases given off by the decompositions.

Configuration:

Mid-temperature ramp has been completed previously. The carrier valve is closed and the TA manifold has full tank pressure (about 6500 dN). The carrier valve will not be operated due to its erratic behavior.

Software updates were made post Sol 113 to the 386SW and the mode table was changed to V125

Inputs: Multiplier Voltage: __3300 Calibration Set: 3 Ch 4 Calibration Voltage: 2800 Pump Nudge needed: Yes Venting Oven #: Will not vent -(none) Pre-heat duration: 30 secs Calibrate Channels: 1,4 Oven Close Time: NA Select TA #: 7 TA# for Check: N/A Emission: Low Cal Tank Temperature: -99C

Constraints:Gas(es) used: Mars ATM will be collected through the TA Sample valve. Filaments used: 1 SW Version (386): V515 SW Version (EGA): V321

October 2, 2008 TEGA_High-Temp_TA7_v4_r4.doc

TEGA High-Temp Soil (TA7_plugged) Sweep and hop mode version(s): MODE TABLE V125.

Supermodes and Sweep modes used: Supermodes 1, 2, 3, 4, 6, and 7; Sweeps 37, and 38.

Supermodes used in Ramp: 4, 6, & 7 (and 29, which is a dummy call to not change the supermode

Note: TEGA is checked to see if TEGA is safed. If so, abort self to end activity

    1. Turn ON TEGA – Call TEGA_power_on – This is controlled by the interop science master
    2. 1.1.1. TEGA_MAIN1_PWR "ON"
    3. 1.1.2. TEGA_MAIN2_PWR "ON"
    4. 1.1.3. TEGA_MAIN3_PWR "ON"
    5. 1.1.4. Start the TEGA 386 FSW
  1. Pause 3 Minutes (collect engineering data at a high rate before turning down)
  2. Call Sequence 30A
  3. Pre-heat delay 30 secs
    1. Turn on EGA
    2. 5.1.1. TEGA/FSW:EGA:Change EGA State
    3. 5.1.2. Restore the modes from EEPROM 0
    4. 5.1.3. EGA Commands:Restore Mode
  4. OPEN GEC Vent Valve
  5. Activate Sequence 24 A (Turns up readings for regulating temps)
  6. Set Manifold Heater to -30C (execute Sequence 3b)
  7. Set Emission on delay to 5 sec (allows best chance for emission start if large Ion pump current)
  8. Warm up EGA: CALL tega_ega_emission_warmup

10.1. (LOW), Calibration Set 3

10.2. Calls tega_ega_prep, filament-1

10.2.1.1. Sets JPlate 0 to -107V

10.2.1.2. Sets Jplate 1 to -92V

10.2.1.3. Pause 5 seconds

10.2.1.4. Set MV 3300 (input variable)

10.2.1.5. Ion Pump ON

10.2.1.6. Start SM 1, pause 1 sec

10.2.1.7. Emission ON

10.2.1.8. Pause 2 Minutes

10.2.1.9. Stop SM 1

10.2.1.10. Emission ON

10.2.1.11. Pause 2 Minutes

10.2.1.12. Stop SM 1

10.3. Pause 2 minutes (provides time for ion pump to stabilize)

10.4. Change engineering transmit to 10 secs

10.4.1. IF pass thru = 1, emission current will change to HIGH

10.5. Call tega_ega_calibration_scans

10.5.1. calibration_set _____3________

10.5.2. hi_emission_______LOW ____

10.5.3. cal_channels______1,4______

10.5.4. cal_voltage ______3300V ____

10.5.5. cal_4_voltage_____2800V ____

10.5.6. exit_voltage ______3300V ____

10.6. Wait 1 second
10.7. Start SM 3
10.8. Pause 20 minu tes
10.9. Stop SM 3
10.10. Pause 1 minute
10.11. Calls tega_ega10.11.1.1.1. 10.11.1.1.2. 10.11.1.1.3. 10.11.1.1.4. 10.11.1.1.5. 10.11.1.1.6. _gain Start SM 2 Pause 1 minute Set MV 2600 – 3400V (1 minute per voltage) Exit at 3300_V (input variable) Stop SM 2 Run Sweep 38

EGA is warmed up and ready to go (54 mins)

    1. Reinforce Emission on
    2. (IF pump nudge is YES Steps 12 to 14 are followed, if NO skip to 15)
  1. Change to HIGH Emission
  2. Pause 5 minutes
  3. Change to LOW Emission
  4. Calibrate EGA: CALL tega_ega_calibration_scans

- 3 -

15.1.1. calibration_set _____3________

15.1.2. hi_emission_______LOW ____

15.1.3. cal_channels______1,4______

15.1.4. cal_voltage ______3300V ____

15.1.5. cal_4_voltage_____2800V ____

15.1.6. exit_voltage ______3300V ____

    16.
    Set EGA manifold heater to +35 C
    17.
    Set TA manifold heater to +65 C
    1. 18. Set following readings to be taken every 1 second.
      2. 18.1. Manifold Pressure
      18.2. Outlet Pressure
      18.3. Bus A Current
      18.4. Bus B Current
    19.
    Start Supermode 7: Soil volatiles
  1. 20. Select Oven TA_7__ (TWEAKABLE)
    2. 21.
    Set Ramp so it has no control over any of the valves(6 total)

Remember to turn on current monitoring to shut down manifold heater (Do not turn manifold heat back on after turning it off in the ramp.)

      22.
      Start Ramp (TWEAKABLE)
    1. 22.1. Ramp Segments File:_______________________________________
  1. 23. Run Heater Init (tega_init_heater_control)

Execute Sequence 24 B to increase readings on temperature regulation.

23.1.1. TA Manifold +65C

23.1.2. Plumbing 1 +65C

23.1.3. Plumbing 2 +35C

23.1.4. Transfer Tube +75C

23.1.5. EGA Plumbing +45C

23.1.6. EGA manifold to +35 C

23.1.7. Wedge Heater @ 10% duty cycle

    24.
    Pause for Delay_2 (467 sec;) – TWEAKABLE Measure Atmosphere
    25.
    Open TA Sample valve to measure atmosphere. - 4 -
    26.
    Pause for Delay_3 (879 sec;) – TWEAKABLE TA Manifold = 4000 dN = 66 mbar Flush atmosphere from oven and plumbing (assumes oven is not plugged at low T)
    27.
    Open oven inlet valve
    28.
    Pause 2 minutes (to measure leak rate of oven) TA Manifold = 18 mbar
    29.
    Open oven outlet valve (to flush oven)
  1. 30. Pause 10 seconds (to get an idea on flow rate)
    2. 31.
    Open bypass valve (to flush atmosphere out of EGA manifold)
    32.
    Pause 2 seconds
    33.
    Close bypass valve
    34.
    Close outlet valve (inlet remains open so TA manifold can record any pressure rise)
  2. 35. Pause for Delay_4 ( 2031 sec for 650 deg C ) - TWEAKABLE Take gas sample at 650 C temperature.
    3. 36.
    Open oven outlet valve (to flush oven)
  3. 37. Pause 10 seconds (to give gas a chance to escape in case it is not plugged)
    4. 38.
    Open bypass valve (to let evolved gases get to EGA outlet manifold)
    39.
    Pause 2 seconds
    40.
    Close bypass valve
    41.
    Close outlet valve
  4. 42. Pause 2 minutes
    5. 43.
    Close TA Sample valve (to capture gas for analysis)
    44.
    Pause 1 min (to measure transition with high time resolution SM 6)
  5. 45. Stop SM
    6. 46.
    Start SM 7

October 2, 2008 TEGA_High-Temp_TA7_v4_r4.doc

TEGA High-Temp Soil (TA7_plugged)

  1. Open TA sample valve (to reduce pressure to ambient in CML volume)
  2. Close TA sample valve
  3. Run tega_disable_heater_control (Turn all remaining heaters off)
  4. Close bypass valve
  5. CLOSE GEC Vent Valve
    1. Turn off EGA: CALL tega_ega_off
    2. 69.1. EGA Shutdown:
    3. 69.1.1. Multiplier Voltage OFF
    4. 69.1.2. Wait 5 secs
    5. 69.1.3. Emission Off
    6. 69.1.4. Wait 5 secs
    7. 69.1.5. Ion Pump Control OFF
    8. 69.1.6. Activate Sequence 7A to turn the EGA OFF
  6. Turn off TEGA: CALL tega_power_off

70.1. Turn off the third TEGA switch

70.2. Turn off the second TEGA switch

70.3. Turn off the first TEGA switch

70.4. FPGA Dump – Aker Valve state