Modes

Timas modes select varying combinations of mass/energy/angle/temporal resolution using the data products noted above. Since not all data products can be transmitted every spin, the main feature of a Timas mode is an Instrument Control Parameter (ICP) table that defines characteristics of Timas on board science data products and sets the priority order for transmitting these data products. The ICP table spcifies the (possibly different) priority of each data product in 32 succesive spin periods. Data are collected, processed, and put into the telemetry stream using the ICP table. Lack of data, telemetry space, or processesing power terminate the processing in each spin period. The 32 spin period is called the super spin period.

For more detailed information see the on-line Instrument operations and data acquistion discussion.

Timas Modes
Name – ICP table #	Pointer to the complete ICP table	Energy Range(s)	MS ELUT	Mass & table 1	Mass & table 2	Mass & table 3	Mass & table 4
Auroral Fast – 1	TIMI0013	Standard & Reduced	28	H+ / 9978	O+ / 9979	He+ / 997A	He++ / 997B
Boundary Layer – 2	TIMI0024	Standard & Reduced	28	H+ / 9978	O+ / 9979	He+ / 997A	He++ / 997B
Polar Cap – 3	TIMI0035	Standard & Reduced	28	H+ / 9978	O+ / 9979	He+ / 997A	He++ / 997B
Polar Cap – 4	TIMI0046	Low Energy	24	H+ / 9978	O+ / 9979	He+ / 997A	He++ / 997B
Test – 240	TIMI2400	Low Energy	0	H+ / 0	O+ / 6	He+ / 3	He++ / 1
Test – 241	TIMI2411	Standard & Reduced	0	H+ / 0	O+ / 6	He+ / 3	He++ / 1
Test – 239	TIMI2392	Low Energy	0	H+ / 0	O+ / 6	He+ / 3	He++ / 1
Test – 245	TIMI2457	Standard & Reduced	0	H+ / 0	O+ / 6	He+ / 3	He++ / 1
Boot up – 0	TIMI0000	Standard & Reduced	0	H+ / 0	He++ / 1	He++ / 2	He+ / 3
Modes introduced 9/3/96 @ 20:00
Auroral Fast – 5	TIMI0050	Standard & Reduced	2	H+ / 9968	O+ / 9969	He+ / 996A	He++ / 996B
Boundary Layer – 6	TIMI0061	Standard & Reduced	2	H+ / 9968	O+ / 9969	He+ / 996A	He++ / 996B
Polar Cap – 7 Never used	TIMI0072	Standard & Reduced	2	H+ / 9968	O+ / 9969	He+ / 996A	He++ / 996B
Modes introduced 6/26/97 @ 20:30 Corrections and New mass lookup table
Auroral Fast – 8	TIMI0083	Standard & Reduced	2	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Boundary Layer – 9	TIMI0094	Standard & Reduced	2	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Modes introduced 9/24/97 Better MS ELTs and priority tables
CUSP Special – 10	TIMI0105	Standard & Reduced	21 MS ELUT for Low Energy Mode ONLY	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
General Purpose – 11	TIMI0116	Standard & Reduced	0	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Perigee Auroral – 12	TIMI0127	Standard & Reduced	21 MS ELUT for Low Energy Mode ONLY	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Modes introduced 10/31/97 @ 17:10 Corrections to the MS Energy Look Up Tables
Perigee Auroral – 13	TIMI0130	Standard & Reduced	13	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Cusp Special – 14	TIMI0141	Standard & Reduced	18	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Mode introduced April 1998 to acquire 8 spin MSCAL data in cusp similar to Mode 14
Cusp MSCAL – 15 OPS begin 4/12/98	TIMI0152	Standard & Reduced	18	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Recalibration – 16 OPS begin 2/?/99	TIMI0161	Standard & Reduced	18	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Modes 16-20 introduced February 1999 to acquire 8 spin MS DATA from the full energy range in mscal and normal ms mode for recalibration. All modes were derived from mode 15.
Recalibration – 17 OPS begin 2/?/99 MS CAL ON	TIMI0173	Standard & Reduced	15	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Recalibration – 18 OPS begin 2/?/99	TIMI0184	Standard & Reduced	15	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Recalibration – 19 OPS begin 2/?/99 MS CAL ON	TIMI0195	Standard & Reduced	17	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Recalibration – 20 OPS begin 2/?/99	TIMI0207	Standard & Reduced	17	H+ / 9958	O+ / 9959	He+ / 995A	He++ / 995B
Modes 21-26 introduced June 1999 at the same time revised mass look up tables were introduced to account for the change in mass positions using the operating parameters emperically determined AFTER the 12/8/98 high voltage anomaly.
Recalibration 21 MSCAL on OPS begin 6/99	TIMI0212	Standard & Reduced	18	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Recalibration – 22 MSCAL off OPS begin 6/99	TIMI0221	Standard & Reduced	18	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Recalibration -23 MSCAL on OPS begin 2/?/99	TIMI0233	Standard & Reduced	15	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Recalibration – 24 MSCAL off OPS begin 6/99	TIMI0244	Standard & Reduced	15	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Recalibration – 25 MSCAL on OPS begin 6/99	TIMI0255	Standard & Reduced	17	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Recalibration – 26 MSCAL off OPS begin 6/99	TIMI0267	Standard & Reduced	17	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
O+ Special -27 Cockpit error in creating mode …discarded after test on 7/26/99	TIMI0276	Standard & Reduced	18	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Unused mode (28) that was transmitted to Goddard.	TIMI0286
Unused mode (29) that was transmitted to Goddard.	TIMI0296
O+ Special -30 14 step mrdf’s for H+, He++ and O+ uploaded 8/13/99	TIMI0306	Standard & Reduced	18	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
modes 31-36 implemented January 26, 2000
Plasma Sheet MS_CAL on	TIMI0317	Standard & Reduced	9	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Plasma Sheet	TIMI0321	Standard & Reduced	9	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Cusp MS_CAL on	TIMI0332	Standard & Reduced	3	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Cusp	TIMI0343	Standard & Reduced	3	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
High mass resolution MS_CAL on	TIMI0354	Standard & Reduced	0	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
High mass resolution	TIMI0365	Standard & Reduced	0	H+ / 9938	O+ / 9939	He+ / 993A	He++ / 993B
Name – ICP table #	Pointer to the complete ICP table	Energy Range(s)	MS ELUT	Mass & table 1	Mass & table 2	Mass & table 3	Mass & table 4

Mass look up tables 9978, 9979, 997A and 997B
Mass look up tables 9968, 9969, 996A and 996B
Mass look up tables 9958, 9959, 995A and 995B
Mass look up tables 9948, 9949, 994A and 994B

   994x are special use tables
               1: H+, 2: O+,
               3: Stim position 1, 4: Stim postion 2

   Image of the 994x tables in mass and energy step space

Mass look up tables 9938, 9939, 993A and 993B

Last updated: 1/26/00 by Bill Peterson