Front Panel Operation
2-116
2.19.2 COMMUNICATION
The COMMUNICATION menu option allows you to select
and configure the GPIB or RS-232 bus.
NOTE
Selecting the alternate interface (GPIB or
RS-232) resets the instrument to the pow-
er-on defaults. This reset action causes the
instrument to exit from the MAIN MENU.
GPIB
The GPIB menu is used for the following operations:
•To select the IEEE-488 bus (GPIB):
•To view or change the IEEE-488 address.
•To select the GPIB language (SCPI or DDC).
•To select the talk-only mode and its parameters.
•To select the data elements to send.
•To view the status byte of the instrument.
Changing between “Addressable” and “Talk-only” causes
triggers to be halted.
ADDRESSABLE: With the instrument set for “Address-
able”, it can listen and talk to a bus controller:
• ADDRESS — This menu item lets you check and/or
change the IEEE-488 address of the instrument. At the
factory the address is set to 27, but it can be changed to
any value from 0 to 30.
After selecting ADDRESS, the present IEEE-488 ad-
dress will be displayed. If you wish to change the ad-
dress, use the RANGE ▲ and ▼ keys to display the
desired number and press ENTER.
• LANGUAGE — This menu item is used to select the
language for the GPIB:
NOTE
Selecting the alternate language (SCPI or
DDC) resets the instrument to the power-
on defaults. This reset action causes the in-
strument to exit from the MAIN MENU.
SCPI — Select this option to use the SCPI program-
ming language to control the instrument.
DDC — Select this option to use Device-Dependent
Command programming. This mode allows you control
both a Model 6517A and a 617 electrometer over the
GPIB using the same DDC commands. See Section 3 of
this manual for details.
TALK-ONLY: In the talk-only mode, the Model 6517A ig-
nores commands from the bus and merely outputs data, as re-
quested by the printer. When the instrument is in the talk-
only mode, the TALK annunciator turns on.
The options for TALK-ONLY are explained as follows:
• INTERFACE — With the IEEE-488 option of this item,
data elements are sent to an IEEE-488 bus printer set for
listen always. With the CENTRONICS option, data el-
ements are sent to a printer with a Centronics (parallel)
interface. The printer must be connected with a Model
8530 IEEE-488 to Centronics Printer Adapter Cable.
• INTERVAL — The INTERVAL option controls how
often readings are printed (expressed as 1 out of nnnn
readings).
• FORMFEED — Use the FORMFEED option of the
menu to enable or disable the sending of a formfeed
character to the printer after printing a user-selectable
number of lines per page (1-255 lines).
ELEMENTS: This menu item lets you select the data ele-
ments sent. Use one of the range keys to toggle between yes
(y) and no (n).
• RDG — The numeric value of the reading.
• RDG# — The buffer location of the reading. The read-
ing number can be reset to zero from the GENERAL
MENU (see paragraph 2.19.7).
• UNIT — The units of the reading.
• CH# — The channel number the reading was taken on.
• HUM — Relative humidity reading if the Model 6517-
RH is being used. The humidity sensor is enabled from
the A/D CONTROLS item of the GENERAL MENU
(see paragraph 2.19.7).
• ETEMP — The external temperature reading if the
Model 6517-TP is being used. The humidity sensor is
enabled from the A/D CONTROLS item of the GEN-
ERAL MENU (see paragraph 2.19.7).
• TIME — The real-time or relative timestamp for each
reading. Timestamp type is selected from the TIMES-
TAMP item of the GENERAL MENU (see paragraph
2.19.7).
•STATUS — The reading status information (normal
reading, measurement overflow or underflow, relative
reading).
• VSRC — The actual output level of the V-Source.
RS-232
The RS-232 menu is used for the following operations:
•To select the RS-232 Interface.
To Next Page
Loading...
Need help?
General
