
User Manual
California Instruments
7.2General
This section describes the suggested maintenance and troubleshooting procedures. The
troubleshooting procedure is divided into two sections. The first section deals with basic
operation and connection of the equipment. The second section requires opening the unit and
using the LED indicators and a simple multimeter to troubleshoot the unit down to the module
level. Only a qualified electronic technician should attempt this level troubleshooting.
7.3Basic operation
Table 7-14: Basic Symptoms
PARAGRAPH
PROBLEM
Excessive Output Voltage
Poor Output Voltage Regulation
Overload Light On
Distorted Output
Unit Shuts Down After 1-2 Seconds
No Output and no lights on front panel
No output but “power on” LED on front panel is lit.
7.3.1Excessive Output Voltage
CAUSE
SOLUTION
External sense not connected
Connect the external sense to the AC
power outlet TB2.
7.3.2Poor Output Voltage Regulation
CAUSE
SOLUTION
Unit is overloaded
Remove overload
Unit is programmed to wrong voltage
range.
Select correct voltage range.
Input line has fallen below spec. limit.
Check supply voltage.
7.3.3Overload Light is On
CAUSE
SOLUTION
Unit is overloaded
Remove overload
Unit is switched to high voltage range.
Select correct voltage range.
7.3.4Distorted Output
CAUSE
SOLUTION
Power source is grossly overloaded.
Reduce load
The crest factor of the load exceeds 3:1 on
the low range or 5:1 on the high range.
Reduce load current peaks by reducing
load.
NSG 1007 Series II
151
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Страница 59: ...User Manual California Instruments Figure 3 26 Connection With MODE Option NSG 1007 Series II 59 ...
Страница 131: ...User Manual California Instruments Figure 5 73 Power Source Module Block Diagram NSG 1007 Series II 131 ...
Страница 134: ...User Manual California Instruments Figure 5 74 5001i Internal Layout 134 i Series II NSG 1007 II iM Series II ...
Страница 135: ...User Manual California Instruments Figure 5 75 Logic Board LED s NSG 1007 Series II 135 ...
Страница 164: ...User Manual California Instruments Figure 9 84 Voltage Modulation 164 i Series II NSG 1007 II iM Series II ...
Страница 204: ...User Manual California Instruments Figure 9 114 NSG 1007 15 208 CTS EOS3 LR3 204 i Series II NSG 1007 II iM Series II ...
Страница 205: ...User Manual California Instruments Figure 9 115 NSG 1007 15 208 3 EOS3 NSG 1007 Series II 205 ...
Страница 223: ...User Manual California Instruments Figure 9 118 Example Connections With INA 2151 NSG 1007 Series II 223 ...