Bruker BVT3000 User Manual

30 (67) BRUKER BVT3000 Version 003
Remote interface control
Rs232 link characteristics 4.6
The serial link allows a host computer to communicate with the BVT3000. It is a
three wire link with no hardware or software handshake. The communication pa-
rameters are 9600 bauds, 1 start bit, even parity, 1 stop bit. The RS232 connector
pin assignment and naming is explained above in
"RS232 connector pin as-
signment" on page 16 .
Rs232 cable 4.7
A cable with two 9 pins female connectors is required to link the host computer to
the BVT3000. The maximum recommended cable length is 10 meters (30 feet).
The cable shield is connected to the connector’s case.
Figure 4.1. RS232 cable
Authorised functions 4.8
The microcontroller automatically detects the installed optional board (Liquid nitro-
gen evaporator or liquid nitrogen exchanger) and any devices connected via the
front panel (ie. exchanger or evaporator). The firmware authorises only the use of
the functions relative to the installed options. Let us suppose, for instance, that
the N exchanger is installed : you cannot use the evaporator functions. The an-
swer to an unauthorised function will be a "NACK". The following table lists the
possible options and the corresponding authorised functions. In this table "X"in-
dicates an authorised function while an empty cell indicates an unauthorised func-
tion.
Sub 9 Female connector Sub 9 Female connector
BVT 3000 or BVT3000
2
3
4
5
6
7
8
9
1
RxD
DCD
TxD
DTR
GND
DSR
RTS
CTS
RI
Aquisition rack
serial interface board
RxD
DCD
TxD
DTR
GND
DSR
RTS
CTS
RI
2
3
4
5
6
7
8
9
1

Bruker BVT3000 Specifications

General

Brand	Bruker
Model	BVT3000
Category	Laboratory Equipment
Language	English