Installation Of Application Package - BRUEL & KJAER 2313 Instruction Manual

Fig. 3.2. The digital ground and chassis ground contacts of the 2313
0
Chassis
Ground
0~
Digital
Ground
As standard the 2313 is delivered with its dig.ital ground connected to chassis, which is
that normally required for operation in most instrument set-ups. However, where the
above grounding requirements dictate, they may be disconnected from one another by
carefully easing off the contact clip from the interface board contacts shown in Fig. 3.2
and using it to connect the top and middle contacts indicated. The interface board is
mounted on the rear panel and is accessible on sliding off the top panel which is
fastened by two screws at the back of the instrument. Before removing the top panel
ensure that 2313 is disconnected from the mains supply.
WARNING! The 2313 is designed to be operated with its digital ground and chassis at
zero earth potential. Never let the signal ground terminals, socket screens or chassis
float at other than approximately zero earth potential , as this will impair the operating
safety of the apparatus and may damage it.
3.2. INSTALLATION OF APPLICATION PACKAGE
12
As standard the 2313 is equipped with an Application Package BZ 7000. This is intend-
ed for use of the 2313 as a conventional Alphanumeric Printer /Graphics Recorder and
plugs directly in the port immediately below the pushkeys of the 2313 as shown in
Fig. 3.3. Once inserted, tighten the knurled fastening on the front of the Package to
ensure that it properly secured.
Where BZ 7000 is to be used in place of one of the other Application Packages avail-
able (see Chapter 1 ), it is advisable to check the contents of the continuous and vola-
tile memories of the Recorder. If important data from previous measurements is pre-
sent in the memories, then this should b~ recorded on tape using the 7400 Digital
Cassette Recorder (see Instruction Manual for particular Application Package used).
This is necessary as stored data will be automatically deleted when BZ 7000 or another
Package is fitted.
Note: To prevent ingress of dust and other foreign matter avoid leaving the 2313 with-
out an Application Package fitted. Also protect Packages not in use by keeping them
in their mahogany case.