Section 4
Page 4 - 4
MODEL 346 INSTALLATION AND OPERATION MANUAL
HA243821
Issue 5 Mar 98
4.3 RECORDER COMMUNICATIONS PORT
Computer entry of numbers, descriptors and units is possible via the configuration port (1/8in jack socket located
as shown in figure 4.3a below).
When wiring the mating 1/8" stereo plug, the tip contact is terminal Tx, the centre is Rx and the shaft is common,
as shown below:
A terminal emulation program, such as Procomm, must be used to emulate a VT100 terminal, allowing the VT100
keys listed in table 4.3 below to be used. For text entry, the typing-in of the two letters ‘o’‘n’ from any configuration
page which is normally used to enter text using the up/down/side arrows (e.g. the programmable units page) will
allow the VT100 alpha-numeric keys to be used instead. In order to disable this feature, ‘o’‘f’‘f’ is typed-in.
The screen display is similar to the normal recorder display, but characters between ~ and
√
(Section 4.4) are not
displayed at the terminal screen. If one of these characters is required, it is necessary to read the recorder display.
Table 4.3 Terminal keys
The following information is provided as a guide only. It is the user’s responsibility to determine if a particular
terminal or computer can be used with the recorder port. The port communications parameters are:
Baud Rate
4800
Parity
None
Data Bits
8
Stop Bits
1
Handshake
None
Figure 4.3a Communications socket location
Page back
Page forward
Clear
Up arrow
Down arrow
Right arrow
ESC,O,Q
ESC,O,R
ESC,O,S
ESC,[,A
ESC,[,B
ESC,[,C
PF2
PF3
PF4
↑
↓
→
Recorder key Any terminal
VT100
Figure 4.3b Jack plug connections
Inner: Terminal transmit
Outer: 0 Volts
Centre: Terminal receive
Jack plug wiring for transfer with host
computer/dumb terminal
