Specifications

Channel Master Operation Manual
page 104 Teledyne RD Instruments
Table 18: Fixed Leader Data Format (continued)
Hex Digit Binary
Byte
Field Description
61,62 31 EZ / Sensor
Source
Contains the selected source of environmental sensor data
(EZ-command). These firmware switches indicate the follow-
ing.
FIELD DESCRIPTION
1xxxxxx = CALCULATES EC (SPEED OF SOUND) FROM
ED, ES, AND ET
x1xxxxx = USES ED FROM DEPTH SENSOR
xx1xxxx = USES EH FROM TRANSDUCER HEADING
SENSOR
xxx1xxx = USES EP FROM TRANSDUCER PITCH SENSOR
xxxx1xx = USES ER FROM TRANSDUCER ROLL SENSOR
xxxxx1x = USES ES (SALINITY) FROM CONDUCTIVITY
SENSOR
xxxxxx1 = USES ET FROM TRANSDUCER TEMPERATURE
SENSOR
NOTE: If the field = 0, or if the sensor is not available, the
Channel Master uses the manual command setting. If the field
= 1, the Channel Master uses the reading from the internal
sensor.
63,64 32 Sensor Avail This field reflects which sensors are available. The bit pattern
is the same as listed for the EZ-command (above).
65-68 33,34 dis1 / Bin 1
distance
This field contains the distance to the middle of the first range
cell (bin). This distance is a function of range cell length (WS),
the blank after transmit distance (WF), and speed of sound.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 cm (2150
feet)
69-76 35-38 Reserved Reserved
77,78 39 WA / False
Target Thresh-
old
Contains the threshold value used to reject data received from
a false target, usually fish (WA-command).
Scaling: LSD = 1 count; Range = 0 to 255 counts (255 dis-
ables)
79,80 40 Reserved Reserved
81-84 41,42 LagD / Trans-
mit lag dis-
tance
This field contains the distance between pulse repetitions.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 centimeters
85-100 43-50 CPU Board
Serial Number
Contains the serial number of the CPU board.
101-102 51 WB / System
Bandwidth
Contains the WB-command setting. Range = 0 to 1
103-108 52-54 Reserved Reserved.
109-116 55-58 Serial # Channel Master serial number.