urn:nasa:pds:mess_mla_raw:data_edr:mlahad0801230200_dat
1.0
MESSENGER MLA Hardware Diagnostic product: mlahad0801230200_dat
1.10.1.0
Product_Observational
2018-06-08
1.0
PDS4 migrated product.
2008-01-23T02:00:00Z
2008-01-23T02:59:59Z
MESSENGER
Mission
urn:nasa:pds:context:investigation:mission.messenger
data_to_investigation
MESSENGER
Spacecraft
urn:nasa:pds:context:instrument_host:spacecraft.mess
is_instrument_host
Mercury Laser Altimeter
Instrument
urn:nasa:pds:context:instrument:mla.mess
is_instrument
Mercury
Planet
urn:nasa:pds:context:target:planet.mercury
data_to_target
Mercury 1 Flyby
1/109540981
1/109544580
mlahdiagnostic
pipe-mla2edr
1.0
mlahad0801230200.dat
2008-01-24T17:52:51Z
0
28800
This table contains one set of instrument engineering data as reported by
the MESSENGER Mercury Laser Altimeter (MLA) hardware diagnostic lite
packets. Additional details are contained in the EDR SIS document.
48
0
96
met
1
1
UnsignedMSB4
4
Mission elapsed time in seconds.
data_xfer_mode
2
5
UnsignedByte
1
Science Data Transfer Mode. =0 byte, =1 nibble.
test_pattern
3
6
UnsignedByte
1
Test Pattern Selection, =1 LFSR, =2 AA, =3 55,
=4 Counter, =5 Counter Inverse.
test_data_select
4
7
UnsignedByte
1
Test data select. =0 Real data, =1 Test Data
pattern. Defaults to 1.
rate_select
5
8
UnsignedByte
1
Rate select flag. =0 One Hz, =1 Six Hz, =2 Eight
Hz, =3 Ten Hz.
modeword1_spare
6
9
UnsignedByte
1
Spare column reserved for future use.
hwlight_sparebyte
7
10
UnsignedByte
1
Spare column reserved for future use.
status3spare6_7
8
11
UnsignedByte
1
Spare column reserved for future use.
cycle_reset_tof
9
12
UnsignedByte
1
Reset Time of Flight timing chips. With reset
enabled the RMU will automatically reset the TOF after every RUPT
until configured to do otherwise.
cal_select
10
13
UnsignedByte
1
Calibration mode selected. =0 0ns, =1 200ns, =2
400ns, =3 200ns.
cal_enable
11
14
UnsignedByte
1
Enable calibration. =0,1,2 Real Data. =3 TOF-A
calibration data.
clock_select
12
15
UnsignedByte
1
Clock selected. =0 Internal(40%),
=1 OSC_B (external clock), =2 OSC_A (external clock),=3
Internal(50%).
status2spare2_4
13
16
UnsignedByte
1
Spare column reserved for future use.
synch_to_pps
14
17
UnsignedByte
1
Synchronize the RMU to the 1PPS. =0 inhibited, =1
enabled.
cycle_slip
15
18
UnsignedByte
1
CPU Cycle slip. (=0 no slip, =1 slip).
ch1_noise_hi
16
19
UnsignedMSB2
2
Background noise counter for channel 1 high.
ch1_noise_lo
17
21
UnsignedMSB2
2
Background noise counter for channel 1 low.
ch2_noise
18
23
UnsignedMSB2
2
Background noise counter for channel 2.
ch3_noise
19
25
UnsignedMSB2
2
Background noise counter for channel 3.
start_pulse_begin
20
27
UnsignedMSB4
4
Contains the timing and validity bits
for the beginning edge of the start pulse.
Bit 1 - start_pulse_begin_valid (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - start_pulse_begin_pid (Pulse id for start pulse is always 0)
Bits 5-22 - start_pulse_begin_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - start_pulse_begin_fine (RMU fine counter, ~400 ps ticks)
start_pulse_end
21
31
UnsignedMSB4
4
Contains the timing and validity bits
for the trailing edge of the start pulse
Bit 1 - start_pulse_end_valid (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - start_pulse_end_pid (Pulse id for start pulse is always 0)
Bits 5-22 - start_pulse_end_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - start_pulse_end_fine (RMU fine counter, ~400 ps ticks)
ch1_hi_pulse_begin
22
35
UnsignedMSB4
4
Contains the timing and validity bits
for the beginning edge of the channel 1 high pulse.
Bit 1 - ch1_hi_pulse_begin_valid (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - ch1_hi_pulse_begin_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3
Bits 5-22 - ch1_hi_pulse_begin_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - ch1_hi_pulse_begin_fine (RMU fine counter, ~400 ps ticks)
ch1_hi_pulse_end
23
39
UnsignedMSB4
4
Contains the timing and validity bits
for the trailing edge of the channel 1 high pulse.
Bit 1 - ch1_hi_pulse_end_valid (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - ch1_hi_pulse_end_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3
Bits 5-22 - ch1_hi_pulse_end_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - ch1_hi_pulse_end_fine (RMU fine counter, ~400 ps ticks)
lowpulse_1_begin
24
43
UnsignedMSB4
4
Contains the timing and validity bits
for the beginning edge of the low pulse 1.
Bit 1 - lowpulse_1_begin_value (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - lowpulse_1_begin_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3)
Bits 5-22 - lowpulse_1_begin_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - lowpulse_1_begin_fine (RMU fine counter, ~400 ps ticks)
lowpulse_1_end
25
47
UnsignedMSB4
4
Contains the timing and validity bits
for the trailing edge of the low pulse 1.
Bit 1 - lowpulse_1_end_valid (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - lowpulse_1_end_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3)
Bits 5-22 - lowpulse_1_end_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-10 - lowpulse_1_end_fine (RMU fine counter, ~400 ps ticks)
lowpulse_2_begin
26
51
UnsignedMSB4
4
Contains the timing and validity bits
for the beginning edge of the low pulse 2.
Bit 1 - lowpulse_2_begin_value (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - lowpulse_2_begin_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3)
Bits 5-22 - lowpulse_2_begin_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - lowpulse_2_begin_fine (RMU fine counter, ~400 ps ticks)
lowpulse_2_end
27
55
UnsignedMSB4
4
Contains the timing and validity bits
for the trailing edge of the low pulse 2.
Bit 1 - lowpulse_2_end_value (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - lowpulse_2_end_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3)
Bits 5-22 - lowpulse_2_end_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - lowpulse_2_end_fine (RMU fine counter, ~400 ps ticks)
lowpulse_3_begin
28
59
UnsignedMSB4
4
Contains the timing and validity bits
for the beginning edge of low pulse 3.
Bit 1 - lowpulse_3_begin_value (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - lowpulse_3_begin_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3)
Bits 5-22 - lowpulse_3_begin_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - lowpulse_3_begin_fine (RMU fine counter, ~400 ps ticks)
lowpulse_3_end
29
63
UnsignedMSB4
4
Lowpulse_3_end contains the timing and validity
bits for the trailing edge of low pulse 3.
Bit 1 - lowpulse_3_end_value (=1 if pulse is valid, =0 if invalid)
Bits 2-4 - lowpulse_3_end_pid (Identifies pulse channel. =1 Channel 1
=2 Channel 2, =4 Channel 3)
Bits 5-22 - lowpulse_3_end_coarse (RMU coarse counter, 200 ns ticks)
Bits 23-32 - lowpulse_3_end_fine (RMU fine counter, ~400 ps ticks)
range_gate_start
30
67
UnsignedMSB4
4
Range Gate start time in units of 200 ns.
range_gate_stop
31
71
UnsignedMSB4
4
Range Gate stop time in units of 200 ns.
ch1_begin_event_count
32
75
UnsignedByte
1
RMU pulse begin triggers on Ch. 1.
ch1_end_event_count
33
76
UnsignedByte
1
RMU pulse end triggers on Ch. 1.
ch2_begin_event_count
34
77
UnsignedByte
1
RMU pulse begin triggers on Ch. 2.
ch2_end_event_count
35
78
UnsignedByte
1
RMU pulse end triggers on Ch. 2.
ch3_begin_event_count
36
79
UnsignedByte
1
RMU pulse begin triggers on Ch. 3.
ch3_end_event_count
37
80
UnsignedByte
1
RMU pulse end triggers on Ch. 3.
laser_tx_threshold
38
81
UnsignedByte
1
Laser start detector threshold (counts).
detector_gain
39
82
UnsignedByte
1
Detector VGA setting (counts).
det_ch1_hi_threshold
40
83
UnsignedByte
1
AEM readback Ch. 0 threshold setting.
det_ch1_lo_threshold
41
84
UnsignedByte
1
AEM readback Ch. 1 threshold setting.
det_ch2_threshold
42
85
UnsignedByte
1
AEM readback Ch. 2 threshold setting.
det_ch3_threshold
43
86
UnsignedByte
1
AEM readback Ch. 3 threshold setting.
tx_pulse_energy
44
87
UnsignedByte
1
Laser pickoff energy monitor.
laser_diode_cur
45
88
UnsignedByte
1
Laser diode pump current.
laser_pulse_width
46
89
UnsignedMSB2
2
Laser pulse width (counts).
hz_to_rupt
47
91
UnsignedMSB4
4
8 MHz Ticks from 1PPS signal to T_0.
subseconds
48
95
UnsignedMSB2
2
Fraction of second from 1PPS to Packet, 0-65536.
mlahad0801230200.lbl
0
PDS3
Original PDS3 label
Carriage-Return Line-Feed