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2701-900-01.book Page 16 Wednesday, August 3, 2011 9:43 AM
1-16
Getting Started
Model 2701 User’s Manual
Figure 1-3
Power module
Model 2701
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
Link/Act
100bT
CAT I
!
DIGITAL I/O
(EXT. TRIG.)
TRIGGER
LINK
ETHERNET
10/100 BaseT
MADE IN
U.S.A.
RS232
SLT
1
~LINE RATING
50, 60, 400Hz
80VA MAX
FUSE
250mAT
!
LINE
100V
120V
Fuse
125mAT 220V
240V
KEITHLEY
SLOT COVER
SLT
2
Line
Voltage
Selector
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
100
220
240
120
Spring
Window
Fuse Holder Assembly
Line frequency
The Model 2701 will operate at line frequencies from 45Hz to 66Hz and 360Hz to 440Hz.
There are no user-settings for line frequency. It is automatically sensed at power-up. The
following command can be used to read the line frequency:
SYSTem:LFRequency?
' Query power line frequency.
Setting line voltage and replacing fuse
A rear panel fuse located next to the AC receptacle protects the power line input of the
instrument. If the line voltage setting needs to be changed or the line fuse needs to be
replaced, perform the following steps.
WARNING
1.
Make sure the instrument is disconnected from the AC line and other
equipment before changing the line voltage setting or replacing the
line fuse.
Place the tip of a flat-blade screwdriver into the power module by the fuse holder
assembly (Figure 1-3). Gently push in and up. Release pressure on the assembly
and its internal spring will push it out of the power module.