Input 2 Filter Check; Figure 6-8, Input 2 Filter Check Configuration - Racal Instruments 2461 User Manual

2461Type C User Manual
Input 2 Filter
Check
Racal Instruments  1998
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Use the equation :
20 * log
( (
−
V
P 1
to verify compliance.
Set the UCT to its default state. Select 50
2.
Configure the UCT as follows:
*RST
INP2:IMP 50
Connect the UCT to the signal generator as shown in Figure 6-8.
SIGNAL GENERATOR
RF OUT

Figure 6-8, Input 2 Filter Check Configuration

Set the generator to 50kHz, 1Vrms. Check that the UCT is
measuring 50kHz and the peak to peak signal level is:
Command Syntax
MEAS2:FREQ?
MEAS2:VOLT:MAX?
MEAS2:VOLT:MIN?
Switch in the input filter for channel 2 and again check that the
counter measures a frequency of 50kHz. Measure the peak to
peak signal and verify that the signal amplitude is reduced by
greater than 2dB.
Performance Verification and Adjustments 6-15
( ( ) ( ) )
− − >
V V / V V
P1 N 1 P 2 N 2
or
) ( ) )
− >
V / V V . 1 25
N 1 P 2 N 2
returns unit to default state
selects 50Ω impedance for Input 2
IN
1
GATE
VT1
VT2
ARM
IN
IN 3
STD
OUT
T2
IN
2
OSC
UCT
Notes
Confirm 50kHz
V
P1
V
N1
2 0 .
Ω impedance for Input
INPUT 2