Agilent Technologies 6612B, Руководство по обслуживанию, Страница: 12 / 74

2 - Verification and Performance Tests
12
Resistor
(substitute for electronic
load if load is too noisy
for CC PARD test) 1 ohm, 12 W (or 2 ohm adjustable)
1 k ohm, 5%, 3 W
9 ohm, 100 W or
Rheostat, 10 ohm, 150 W Ohmite D12K2R0 (2 ohm adjustable)
Agilent p/n 0813-0001
Ohmite RLS10R (10 ohm adjustable)
Ohmite 11F103
Oscilloscope Sensitivity: 1 mV
Bandwidth Limit: 20 MHz
Probe: 1:1 with RF tip Agilent 54504A or equivalent
RMS Voltmeter True RMS
Bandwidth: 20 MHz
Sensitivity: 100
µ
V
Agilent 3400B or equivalent
Variable-Voltage
Transformer Adjustable to highest rated input voltage range.
Power: 500 VA
Measurement Techniques
Test Setup
Most tests are performed at the rear terminals of the supply as shown in Figure 2-1a. Measure the dc voltage directly
at the +S and -S terminals. If the Power Supply is equipped with a Local/Remote switch, set the switch to Remote
and connect the output for remote sensing. Use adequate wire gauge for the load leads.
Load
-S - + +S
Local
Remote
SENSE
+
-
50VDC MAX TO
resistor
DC
Ammeter
-
+
Load
-S -
+ +S
Local
Remote
SENSE
+
-
50VDC MAX TO
resistor
DC
Ammeter
-
+
+
-
External
Set to
Remote
Set to
Remote
DC supply
A.
B.
C.
-S -
+ +S
Local
Remote
SENSE
+
-
50VDC MAX TO
NOTE: Connector
is removable
Set to
DVM or
Current
monitor
RMS voltmeter
Remote
1 K
1 K
-
+
Electronic
- +
DVM, Scope, or
-
+
RMS voltmeter
Load
(for CV tests)
(for CC tests)
Note: Use dc supply with same polarity
connectons for - CC tests.
Replace load with 9 ohm resistor
for CC noise test.
(see note)
Figure 2-1. Test Setup