Specifications

Channel Master Operation Manual
page 108 Teledyne RD Instruments
Table 19: Variable Leader Data Format (continued)
Hex Digit Binary
Byte
Field Description
33-36 17,18 ED / Depth of
Transducer
Contains the depth of the transducer below the water surface
(ED-command). This value may be a manual setting or a
reading from a depth sensor.
Scaling: LSD = 1 decimeter; Range = 1 to 9999 decimeters
-1 = Unknown (Hex FFFF)
37-40 19- 20 Reserved Reserved
41-44 21-22 Pitch
45-48 23-24 Roll
For pitch, roll, and temperature, a value of –32768 indicates
no measurement (Hex 8000).
49-52 25,26 ES / Salinity Contains the salinity value of the water at the transducer
head (ES-command).
Scaling: LSD = 1 part per thousand; Range = 0 to 40 ppt
-1 = Unknown (Hex FFFF)
53-56 27,28 ET / Tempera-
ture
Contains the temperature of the water at the transducer head
(ET-command). This value may be a manual setting or a
reading from a temperature sensor.
Scaling: LSD = 0.01 degree; Range = -5.00 to +40.00 de-
grees C.
57,58
59,60
61,62
29
30
31
MPT minutes
MPT seconds
MPT hundredths
This field contains the M
inimum Pre-Ping Wait Time between
ping groups in the ensemble.
63 - 64 32 Reserved Reserved
65-66 33 Pitch STD Pitch standard deviation.
Scaling: LSB = 0.1 degree
67-68 34 Roll STD Roll standard deviation.
Scaling: LSB = 0.1 degree
69-96 35 -48 Reserved Reserved
97-104 49-52 Pressure Contains the pressure of the water at the transducer head
relative to one atmosphere (sea level). Output is in deca-
pascals.
Scaling: LSD=1 deca-pascal; Range = -2,147,483,648 to
+2,147,483,648 deca-pascals. Output is -2,147,483,648
when pressure is invalid.
105-120 53-60 Reserved Reserved