
Page 1.2 VERY HIGH VOLTAGE MUX/SWITCHING MODULES 20-310/320
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SECTION 1 - TECHNICAL SPECIFICATION
High Voltage Multiplexer/Switch Module – 20-310/320
pickeringtest.com
Specifications
Operating/Storage Conditions
Operating Conditions
Operating Temperature:
Humidity:
Altitude:
0°C to +55°C
Up to 95% non-condensing
5000m
Storage and Transport Conditions
Storage Temperature:
Humidity:
Altitude:
-20°C to +75°C
Up to 95% non-condensing
15000m
Safety & CE Compliance
All modules are fully CE compliant and meet applicable EU
directives: Low-voltage safety EN61010-1:2010, EMC Immunity
EN61326-1:2013, Emissions EN55011:2009+A1:2010.
Programming
The high voltage module is operated via a digital I/O module. All
modules contain 16 individual switches, programmable either by
single relay, byte or word (16 relays simultaneously):
ARESET a Clear all switches on module a
CLOSE a,b Set switch number bon module a
DELAY t Force a minimum delay of tmilliseconds
between two instructions
OPEN a,b Open switch number bon module a
RESET Open all switches on all modules
READ? a Read status of relay drives, conrms correct
connection to 20-310/320 unit.
WRITE a,w Send word wto module a
VIEW? a[,b] View status of module a, can be viewed at any
time either as a word/byte or by switch logical
value (1 or 0)
Very High Voltage Switch Specification
Max Standoff Voltage:
Max Switching Voltage:
7500V DC (7500V ACpk)
7500V DC (7500V ACpk)
Max Power:
Max Switch Current:
Max Carry Current:
10W (at max voltage)
50W (at low voltage)
0.25A
<5mA (at max voltage)
0.25A
Contact Resistance, On:
Contact Resistance, Off:
Bandwidth:
2Ω
>1011Ω
250kHz
Max Switch Operate Time:
Max Switch Release Time:
7ms
6ms
Expected Life Low power load:
Expected Life Full power load:
>1x108operations
>1x106 operations
Remote Mounting - The Preferred Method
20-310/320 Series modules are suitable for remote mounting,
away from the main System 20 case. They may be mounted in
a separate switching system expansion case, this enables them
to be located as close as possible to the high voltage source,
thus keeping EHT cabling to a minimum. If remote mounting is
not chosen then the high voltage modules may be mounted in
a “Combined” System 10/20 case, however this will result in a
increase in switching noise within the system case.
+5V (logic)
+5V (relay)
+12V (relay)
10-910-001
Power Supply Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20-320-001
DualHigh Volts Multiplexer
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20-320-001
DualHigh Volts Multiplexer
2.4
+5V (logic)
+5V (relay)
+12V (relay)
1.2"
MANTEST
POWER
ON
ACTIVE
ERR
TEST
GPIB
SERIAL
10-910-001
Power Supply Module
10-920A -001
IEEE/RS
1.2"
Module 1
10-410-001
Digital I/O
1.2"
Module2
10-410-001
DigitalI/O
CONTROL SYSTEM (10 or 20)
SYSTEM 20 (High Volts)
+5V (logic)
+5V (relay)
+12V (relay)
10-910-001
Power Supply Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20-320-001
DualHigh Volts Multiplexer
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20-320-001
DualHigh Volts Multiplexer
Module 1
10-410-001
Digital I/O
Module 2
10-410-001
Digital I/O
COMBINED SYSTEM 10/20
MANTEST
POWER
ON
ACTIVE
ERR
TEST
GPIB
SERIAL
10-920A-001
IEEE/RS
Manual Control
This module is also suitable for manual control.
Mechanical Characteristics
Both modules conform to the 6U height (262mm) Eurocard standard
and are 160mm deep. Front panel width is 3.6 Inches.
Internal
Construction
of 20-310/320
Module
(contains 17
Pickering Series 60
high voltage reed
relays)
Safety – Interlock Facility
All three high voltage connectors have an interlock facility, which
should be used with external circuitry to disable any high voltage
sources whenever any of the three connectors is not rmly
secured.
High Voltage & Control Connections
High voltage connections are made via three 15-pin high voltage
connector plugs each with an earthed shield and including interlock
pins. Connection from the 10-410B-004 driver module is via a front
panel mounted 37-Pin D-type using the 40-970 interconnection
cable (specify length required).
Relay Type
The modules are tted with Pickering Series 60 High Voltage Reed
Relays.
All reed relays are manufactured by our sister company Pickering
Electronics: pickeringrelay.com