Metrohm 746 VA Trace Analyzer - Manual (Page 551)

7 Safety, Errors, Troubleshooting, Diagnosis, GLP
746 VA Trace Analyzer / 747 VA Stand
7-52
7.6.4 Checking RS232 interfaces
For this test a 3.496.8480 Test plug is needed, This plug can be purchased by customers quoting the
above number or they can make it themselves by following the diagram below:
PIN PIN PIN PIN
2 –––––– 3 20 –––––– 6
2 –––––– 8 4 –––––– 5
Connections in 3.496.8480 Plug
1 Prepare instrument for diagnostic test (see section 7.6.2).
2
3
4
5 Plug 3.496.8480 Test plug into 'RS232 Interface 1' connection.
6
7 The test runs automatically.
(If a fault appears, an error message is outputted.)
8
9 Plug 3.496.8480 Test plug into 'RS232 Interface 2' connection.
10
11 The test runs automatically.
(If a fault appears, an error message is put out.)
12 Press several times until the ”MONITORING” page appears.
13 Remove test plug.
7.6.5 Checking control lines
For this test a 3.496.8550 Test plug is needed, This plug can be purchased by customers quoting the
above number or they can make it themselves by following the diagram below:
PIN PIN PIN PIN
1 –––––– 24 5 –––––– 21
2 –––––– 12 9 –––––– 18
3 –––––– 23 10 –––––– 17
4 –––––– 22 11 –––––– 16
Connections in 3.496.8550 Plug