Earthing - LEYBOLD GRAPHIX ONE Instruction Manual

5.3.3

Earthing

Through the earthing screw
connected to the Earth connection on the vacuum chamber.
NOTICE: Earthing
Connect the Earth connection on the vacuum chamber by means of a
protective earth conductor to the earthing screw on the instrument
Measurement Channel (CH1 ... CH3)
5.3.4
The connector marked Channel serves the purpose of connecting sensors. For each
measurement channel two sockets connected in parallel are available: one each 8-way
modular socket (
SUB-D- socket (
CAUTION: Impermissible Sensors.
Connecting sensors which have not been designed to be operated in
connection with the GRAPHIX controller or which do not comply with current
EMC guidelines can impair operation of the instrument or even damage it.
Always operate the GRAPHIX controller with approved sensors.
3.2 Suitable Sensors, page 15.
CAUTION: Multiple Sensors.
Only a single sensor may be connected to each measurement channel.
Otherwise, the connected sensors will suffer damage. Connect to each
measurement channel precisely one sensor only.
Connecting:
Measurement channel 1: Connect the sensor using a shielded straight through (1:1) cable
to connector CH1 A or CH1 B.
Measurement channel 2: Connect the sensor using a shielded straight through (1:1) cable
to connector CH2 A or CH2 B (for two- and three-channel instruments only).
Measurement channel 3: Connect the sensor using a shielded straight through (1:1) cable
to connector CH3 A or CH3 B an (for three-channel instruments only).
GA300550402_002_C1 – 10/2016
( Figure 7, B, page 26) the GRAPHIX controller is
Figure 7, C1, D1, E1, page 26 and Figure 8, page 27) and a 15-way
Figure 7, C2, D2, E2, page 26 and Figure 9, page 27).
Figure 8 – Sensor connection (modular socket, 8-way)
1 +24 VDC
2 Ground
3 Signal
4 Identification resistor
Figure 9 – Sensor connection (SUB-D socket, 15-way)
1 Not available
2 Signal
3 Not available
4 HV On
5 Ground
6 Not available
7 Degas
8 +24 VDC
5 Signal ground
6 Status
7 Not available
8 HV On
9 Not available
10 Identification resistor
11 +24 VDC
12 Signal ground
13 RXD
14 TXD
15 Ground

Chapter
27