Larson Davis System 824 - Types of History; Advance; Backup

B-46 824 Reference Manual 9/12/00
that record number; it is a signed 8-bit value, i.e. 1 to 127 is
positive 1 to 127 while 128 to 255 is -128 to -1 respectively.
Refer to settings 211 through 217 to query the current record
number. Setting these to a desired record number is an alter-
nate form of the Find command.
Brackets in the syntax indicate optional characters and oper-
ands.
<cr> = carriage return; <lf> = line feed
Types of History
Each history is assigned a number (history_number) so that
it can be identified explicitly with the Advance, Backup, and
Find commands and is shown below.
Denoted in syntax by history_number:
1=Exceedance (E)
2=Interval (I)
3=Daily (D)
4=Run Log (L)
5=Calibration (C)
6=Time (H)
7=Histogram Table (T)
Advance
Advance a number of records from present record number. If
no num_record (number of records) is provided, 1 is
assumed.
Backup
Backup a number of records from present record number. If
no num_record (number of records) is provided, 1 is
assumed.
Syntax Response
A[dvance][num_record][, history_number] <cr><lf>
Example: A
Example: A5
Example: A9,5
Advance current history 1 record
Advance current history 5 records
Advances calibration history by 9 records
Syntax Response