HP E8402A, User And Service Manual, Page: 166 / 249

168 Programming the Enhanced Monitor Chapter 3
TRACe[:DATA]?
<
name
>
TRACe[:DATA]? returns the measurement data over the past hour for the <name>
trace. All data is provided as a finite IEEE488.2 block containing 2 byte integers.
Byte order is set by FORMat:BORDer.
Parameters
Returned Data
Comments
•
Data is stored every 10 seconds over a 1 hour period for all waveforms except
P5EXt. The first integer in the data block is the most recent reading.
TRAC:PRE? values are used to convert the integer value to a floating point
measurement. Refer to TRAC:PRE? for details.
•
If less than 1 hour of data has been taken, a value of -1 is used as a pad to
complete the hour’s worth of data.
•
In general, you should execute commands in the following order:
TRACe:POINts
to determine number of points
TRACe:DATA? to get the actual data
TRACe:PREamble to get time stamp of first trace point
The xorigin field of the TRACe:PREamble data is the first reading time stamp
in the block of data was taken. The units for xorigin is seconds since power-on.
Name Type Range Default Description
<
name>
enum. OUTF0..OUTF12
OUTM0..OUTM12
OUTR0..OUTR12
AMBient
PSUPply
VP5
VP12
VN12
VP24
VN24
VN5PT2
VN2
P5STdby
P5EXt
IP5
IP12
IN12
IP24
IN24
IN5PT2
IN2
TPWR
BLOW1
BLOW2
BLOW3 none slot 0 through 12 front temperatures
slot 0 through 12 middle temperatures
slot 0 through 12 rear temperatures
mainframe intake air temperature
Power Supply Temperature
5V supply voltage
12V supply voltage
-12V supply voltage
24V supply voltage
-24V supply voltage
-5.2V supply voltage
-2V supply voltage
5V Standby voltage
External 5v voltage
5V supply amperage
12V supply amperage
-12V supply amperage
24V supply amperage
-24V supply amperage
-5.2V supply amperage
-2V supply amperage
total power on all seven supplies
Main Cooling Fan
Power Supply Cooling Fan
Power Supply Cooling Fan (HP E8404 only)
Type Range Description
IEEE 488.2 Block Trace data for previous hour. (except for P5EXt)