October 7, 2008 TEGA_High-T_TA1_Blank_Oven_v1_r4.doc

TEGA High-Temp Ramp TA-1 for Blank Oven Change Bars are relative to TEGA_High-T_OFB_test_on_TA0_v4_r1.doc Reconciled with block: Objectives:

The purpose of this run is to look for organics and CO2 release to determine the nature of the system blank for organic compounds. After warm up, we will collect residual data for 7 minutes followed by 15 minutes for the atmosphere and 15 minutes for the carrier gas. We then take 10 minutes to flush the gas out of the oven then begin the ramp. The ramp starts at -60 C and runs to + 1000 C at 20 K/min followed by a 5 minute hold before the ramp returns to low temperatures. The procedure shuts off the manifold heater when the oven and shield are at high temperatures to avoid drawing too much current from the lander; we do not turn it back on as we used to do when we analyzed cal gas at the end of a run. A procedure similar to this was run on TA-0. That ramp was shortened a lot be removing the atmosphere test and some other things. This run will be longer.

Configuration:

The control of flow via the carrier valve is not possible due to a hardware problem. We will begin the run with the carrier valve in the open position and leave it there throughout the run. We will regulate the flow with a duty cycle control on the bypass and oven inlet valves (depending on where we want the gas to flow).

Remember that TA7 is shorted, so any gas flow through TA1 will happen through TA7 also.

Constraints:Gas(es) used: Carrier. Mars atmosphere will also be collected through the TA Sample valve. Filaments used: 1, LOW EmissionSW Version (386): V515 SW Version (EGA): V321 Sweep and hop mode version(s): MODE TABLE V125. Super modes and Sweep modes used: Supermodes 1, 2, 3, 4, 6, and 7; Sweeps 37, and 38. Supermodes running in ramp: 6, 4 & 7

Inputs: Multiplier Voltage: __3300 Calibration Set: 3 Ch 4 Calibration Voltage: 2800 Calibrate Channels: 1, 4 Select TA #: 1

- 1 -

October 7, 2008TEGA_High-T_TA1_Blank_Oven_v1_r4.doc

TEGA High-Temp Ramp TA-1 for Blank Oven

Cal Tank Temperature: -99

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
      2. 1.1.1. TEGA_MAIN1_PWR "ON"
      1.1.2. TEGA_MAIN2_PWR "ON"
      1.1.3. TEGA_MAIN3_PWR "ON"
      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. Turn on EGA

4.1.1. TEGA/FSW:EGA:Change EGA State

4.1.2. Restore the modes from EEPROM 0

4.1.3. EGA Commands:Restore Mode

  1. Set EGA emission on delay to 5 seconds
  2. OPEN GEC Vent Valve
  3. Warm up EGA: CALL tega_ega_emission_warmup (filament 1, emission low, cal set 3)

6.1.1. Note: IF pass through was selected as HIGH, calibration set CANNOT equal 3

6.2. Calls tega_ega_prep, filament-1 (r9)6.2.1.1.Sets JPlate 0 to -107V 6.2.1.2.Sets Jplate 1 to -92V6.2.1.3.Pause 5 seconds6.2.1.4.Set MV 3300V Pause 1 sec6.2.1.5.Ion Pump ON6.2.1.6.Start SM1, pause 1 sec 6.2.1.7.Emission ON6.2.1.8.Pause 2 Minutes6.2.1.9.Stop SM 1

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

6.3. Change engineering transmit to 10 secs

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

- 2 -

6.4. Call tega_ega_calibration_scans, exit at 3300V

6.4.1. calibration_set _____3________

6.4.2. hi_emission_______LOW ____

6.4.3. cal_channels______1, 4______

6.4.4. cal_voltage ______3300V ____

6.4.5. cal_4_voltage_____2800V ____

6.4.6 exit_voltage ______3300V ____

6.5. Start SM 3

6.6. Pause 20 minutes

6.7. Stop SM 3

6.8. Pause 1 minute

6.9. Calls tega_ega_gain

6.9.1.1.1. Start SM 2

6.9.1.1.2. Pause 1 minute

6.9.1.1.3. Set MV 2600 – 3400V (1 minute per voltage)

6.9.1.1.4. Exit at 3300V

6.9.1.1.5. Stop SM 2

6.9.1.1.6. Run Sweep 38

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

    1. Set emission on (as insurance)
    2. (IF pump nudge is YES Steps 8 to 10 are followed, if NO skip to 11)
  1. Change to HIGH Emission
  2. Pause 5 minutes
  3. Change to LOW Emission
  4. Set EGA manifold heater to +35 C
  5. Set TA manifold heater to +65 C
    1. Calibrate EGA: CALL tega_ega_calibration_scans (set = 3, exit=3300 V)
      2. 13.1.1. calibration_set _____3________
      13.1.2. hi_emission_______LOW ____
      13.1.3. cal_channels______1, 4______
      13.1.4. cal_voltage ______3300V ____
      13.1.5. cal_4_voltage_____2800V ____
      13.1.6. exit_voltage ______3300V ____
  6. Start Supermode 6: Soil volatiles
  7. Select Oven TA_1__ (TWEAKABLE)
  8. Change pressure monitoring to timer 1
  9. Change BusA and BusB cur to timer 1

- 3 -

21. Start Ramp (TWEAKABLE) Ramp should have control of NO valves

21.1. Ramp Segments File _______________________________

Measure residuals for 7 minutes (ramp goes to SM 7)

  1. 22. Pause for
    Delay-1 (0 sec; ) - TWEAKABLE
  2. 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

24. Pause for

Delay-2 (439 sec;) – TWEAKABLE

23.1.7. Wedge Heater @ 10% duty cycle

- 4 -

Measure atmosphere for 15 minutes (ramp calls SM 4)

(get 30 seconds of SM4 here)

  1. Open TA sample valve to sample atmosphere – (30 seconds after B55)
  2. Pause 2 minutes
  3. Close TA sample valve to seal in atmosphere
  4. Pause 30 seconds
  5. Stop SM 4
  6. Start SM 7
  7. 31. Call sequence TBD to regulate gas flow via bypass valve - 44B

32. Pause for Delay 3 (717 sec; ) - TWEAKABLEMeasure carrier gas then flow gas through oven and ramp temperature (SM 6)

  1. Open TA sample valve to release atmosphere and to sample carrier gas
  2. Pause 1 minute to measure pure carrier gas via bypass
  3. Stop SM6 (query again re: moving 32 and 33 to between 37 and 38 with 30 sec delay)
  4. Start SM7
  5. Stop flow regulation via bypass valve
  6. Change timer 5 to 16 seconds (16 seconds on, 240 seconds off)
  7. Open oven outlet valve

41. Pause for Delay-4 (5270 sec)

40. Call sequence

TBD to regulate gas flow via oven inlet valve 46B

42. Stop regulation via oven inlet valve

Flow via bypass for 15 minutes

    1. Change timer 5 to 8 seconds (8 seconds on, 120 seconds off)
      2. - 5 -
  1. Call sequence TBD to regulate gas flow via bypass valve 44B

46. Pause for Delay-5 ( 895 seconds)

45. Close oven outlet valve

  1. Stop regulation via bypass (so pressure in CML can drop)
  2. 48. Pause 5 minutes
  3. Close TA Sample valve
  4. Wait for ramp to complete (timeout TBD_) -TWEAKABLE

Ramp Ends as Follows:

SM 6 running

Carrier open and Calibration Closed

Inlet & Outlet closed

TA Sample closed with carrier in CML volume

Bypass closed

51. Close Carrier valve 20 times

Shut down

  1. Run tega_disable_heater_control (Turn all remaining heaters off)
  2. Stop SM 6
  3. CLOSE GEC Vent Valve
  4. Turn off EGA: CALL tega_ega_off

EGA Shutdown:

Multiplier Voltage OFF Wait 5 secsEmission OffWait 5 secs Ion Pump Control OFF Activate Sequence 7A to turn the EGA OFF

56. Turn off TEGA: CALL tega_power_off

Turn off the third TEGA switchTurn off the second TEGA switch

- 6 - Turn off the first TEGA switch FPGA Dump – Aker Valve state

- 7 -