Table of Contents
Advertisement
1.7.4 FTP Data Transfer Test
(Comm Window 4/5)
Executing the FTP data transfer test sends a file named
FTP_TEST.TXT.
If the test file cannot be sent, check whether the settings you made
are correct.
If more than 100 items of FTP data yet to be sent have accumu-
lated (such as when PPP calls cannot be connected), the oldest
FTP data yet to be sent is assumed to have failed and will not be
sent. At startup, all FTP data yet to be sent is cleared.
Data Transfer Time
When 16 channels of data are measured for one hour at one-sec-
ond intervals, for example, the file size is (3600 data * 2 bytes * 16
channels + header 15000) = 130K bytes. Therefore, the transfer
time via PPP at 9600 bps is 130K bytes * 8 bits/9600 bps = 108.5
seconds = 1 minute, 49 seconds. When taking the time needed to
create data on the main instrument side into account, however, the
actual transfer time is a little under three minutes. (Moreover, addi-
tional time is required before and after data transfer; about 30 sec-
onds to make a call and about 30 seconds to disconnect.)
The transfer time via LAN is 130K bytes * 8 bits/10 Mbps = 0.1 sec-
ond. When taking the time needed to create data on the main
instrument side into account, however, the actual transfer time is a
little under three seconds.
1.7 Automatic Data Transfer by FTP Client
53
1
2
3
4
5
6
7
8
9
10
11
Advertisement
Table of Contents
