32
d) Delete Data Logger
The data can be deleted in two manners:
1. Via the menu in current operation. This procedure is described in chapter 7, Commissioning, item “Menu Pre-
Setting”.
2. Via a shortcut at activation.
• Switch off the meter.
• Keep the two buttons “CLEAR” and “POWER” pushed until the display shows “CLR DATA”.
• Release the buttons when the regular measuring display appears. The meter switches off again.
• The data have been deleted.
• Switch on the meter; the memory can be used again.
• The empty memory is displayed in the display function “READ” with three dashes “- - -”.
10. USB Interface
The meter has a serial USB interface
(8)
for data exchange with a computer. It is located at the upper housing side.
The interface is designed in the form of a device-specific socket and requires the enclosed data cable.
At initial commissioning first install the enclosed software and the associated device drivers before con
-
necting the meter to the computer.
The serial data signal is made up in the following order:
1. Baud Rate
19200
2. Message Head - Length - Type Function Code - Display 1 - Display 2 - Status Code - Validate - 2 Byte - 1 Byte -
1 Byte - Null - 5 Byte - 4 Byte - 6 Byte - 2 Byte
Message Head
ABCD
Message Length 21 Bytes
Message Type
0 Real time data, 1 Stored Data
Display code
Sent by 1(2) ASCII Sequence
Example 1.003, “1”“.”“0”“0”“3”
Status Code
composed 0x30+Status code.
Format as follows: 0 0 1 1 Ol2_flag Ol1_flag Manu_flag Hold_flag
Validate Counts
Checksum of “Message head” to the last status code
3. Status Code
Status
Code
1
0 0 1 1 Shutdown 10-500
hz 10-1khz 10-10khz
Status
Code
2
0 0 1 1 HOLD USB
DATA MAX
Status
Code
3
0 0 1 1 Null MM CM/S M/S2
Status
Code
4
0 0 1 1 Bulb Vrms Dp-p Ap
Status Code 5
0 0 1 1 Battery Power 3 level Battery Power 2 level
Battery Power 1 level Battery no power
Status
Code
6
0 0 1 1 Null Null Null Null
