|
Readout
|
Explanation
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|---|---|
| Internal clock 18,000 microseconds slow | CRM internal clock is offset over its reference. In the example, the CRM internal clock is 18,000 µs behind the reference. The figure is for the last minute. |
| 2001 Apr 17 06:06:00 o/s=1112521 drift= 21 | Date/time (year month day hour:min:second), the internal clock offset (o/s) in a unit of 25/1536 (= 1000/1024/60) µs in a fraction of a second and the clock drift over a minute in the same unit as the offset. |
| Power 99Asecs 13.669Asecs 227mA 5.35W | MEG and OBH power consumption, including ampere seconds since the system was started, ampere seconds, average current, and power consumed in the last minute. |
| Temperature 23.06°C | Temperature
in the MEG canister measured on the PDM board. |
| MIN MAX AVG STATUS #Blks #Naks Pkt# Space | The next three lines summarize the status of OBH power and the data link. The first single-digit number in each line indicates the PDM channel that corresponds to the measurement. Channel 0 is dedicated to SWB voltage measurement. Channels 1 and 2 are dedicated to the OBHs. Channels 3, 4, and 5 are available for connection to internal DM24s (not set in this example). |
| 0 23.57V 23.59V 23.57V SWB >GOOD 50 0 46 511 | LBU voltages (PDM channel 0) in the last minute, in order of minimum, maximum, and average, respectively. Comparison of these results with thresholds is given as follows: "high" = exceeding the higher threshold, "good" = between the two thresholds, and "low!" = below the lower threshold. The next four readings indicate the number of GCF blocks sent in the last minute, the number of error blocks (NAKs) in the transmission, the last GCF block sequence number, and the available space in the CRM buffer, respectively. |
| 1 111.0mA 124.2mA 119.7mA ON ok 29 0 | One-line summary of supply current and data link status for the first OBH sensor. A one-word diagnosis is given with each measurement similar to the LBU voltage measurement example in channel 0: "ok" = between high (160 mA) and low (40 mA) current thresholds, "low" = below the lower threshold, and "leak?" = higher than the upper threshold. |
| 2 133.8mA 142.3mA 138.6mA ON ok 21 0 | |
| The SAM status message includes the current measurements of PDM channel 1 (logic supply for the disks), channel 6 (5-V supply for disks), and channel 7 (12-V supply for disks [not in use during Leg 195]). A status message from the CRM in the SAM includes an additional 100-byte string as follows: | |
| Writing 5|1306 : Reading 3|4032 Bad Flash 0 0 | This line indicates the status of buffer memory: the number of chip and block currently writing and reading and the number of error in writing and reading, respectively. |
Notes: CRM = combiner/repeater module, MEG = multiple-access expandable gateway, SAM = storage acquisition module, OBH = ocean borehole seismometer, PDM = power distribution module, SWB = seawater battery, DM24 = digitizer module, LBU = lithium battery unit. GCF = Guralp compressed format.