User`s guide

2.3 Product feature:
Screen image capture
To retrieve a copy of the test set’s
current screen, go to the 8960 Web
control page on your PC and select
the Get Image icon.
Once the image is obtained, clicking
the image again will capture a new
screen (or refresh the image). Since
normal Windows functions are avail-
able for the image, you can save the
image by right-clicking the image
and using the browser’s Save Picture
As… feature. You also can choose a
GIF or bitmap file format. To close
the image, click the X in the upper-
right corner of the window.
2.4 Product feature:
Protocol logging
The E6701A GPRS lab application
enables the test set to log GPRS pro-
tocol messages. The log results are
displayed in a Web page format. You
control which messages are logged
by choosing observation points. It is
important to remember these points
about the log data:
• you are using the PC to access this
data
• the data is formatted to be read by
a Web browser (such as Internet
Explorer
®
) on the PC
• you cannot view the log data on
the test set’s display
• to save log data, you must store it
in the PC’s memory, which you
will learn how to do in section
2.4.4 Saving log data in the PC.
• there is only one logging memory
location in the test set for log data,
of about 4 MB size
• if you select Start Logging again,
any previous data in the memory
location will be overwritten
• you can log while using any of the
data connection types in the test
set: IP Data, ETSI A, ETSI B, and
BLER
2.4.1 Using protocol logging
To use protocol logging, from the PC
use the 8960 Web control page and
select the Protocol Logging icon.
Next, use the Logging Setup icon to
select the setup.
Change the observation points and
buffer operation. (Note: At least one
observation point must be selected.)
The observation points correspond
to seven protocol layers you can log.
(Refer to Table 1.) Logging data will
only be collected for layers that have
been selected prior to the start of
logging. For this demonstration,
select GMM/SM and GSM_L3. Make
sure the other observation points
are NOT selected.
Table 1. Observation points and
corresponding protocol layers
L1_Interface Raw information between the
DUT and test set
RLC/MAC Access and control messages
LLC Unnumbered and supervisory
messages
GMM/SM Attach, detach, security, and
PDP context messages
GSM_L3 Common control channel
messages
SNDCP Network-level messages
IP IP datagram data and control
fields
2.4.2 Buffer operation
1. To demonstrate the buffer
operation select Linear. The
linear buffer stops the log when
the logging memory location is
full. The cyclic buffer writes
over the oldest data once it is
full.
2. Next, scroll to the bottom of the
page and enter a user comment
if desired to annotate the log.
The comment must use alphanu-
meric characters only and be up
to 74 characters in length. Select
OK to save the setup and return
to the main logging page.
3. Select the Start Logging icon.
4. Turn on the phone's power to
perform a switch-on and attach.
The phone should indicate
service signal-strength bars in
the upper-left corner of the dis-
play within about one minute.
It should also indicate the
numbers “001-01” or the word
“Test” in the center of the
display. This is the default test
network number stored in the
test set. On the test set, in the
bottom center of the display, the
active cell box should show
“Attached”.
5. On the PC, select the Stop
Logging icon. Note that no data
will be displayed until the log is
stopped. The test set has
captured the log data in its
internal memory.
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