Functional Checks; Input 1 Filter Check; Figure 6-7, Input 1 Filter Check Configuration - Racal Instruments 2461 User Manual

Functional Checks

Input 1 Filter
Check
Performance Verification and Adjustments 6-14
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Set the UCT to its default state. Select 50
1.
Configure the UCT as follows:
*RST
INP1:IMP 50
Connect the UCT to the signal generator as shown in Figure 6-7.
SIGNAL GENERATOR
RF OUT

Figure 6-7, Input 1 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
MEAS1:FREQ?
MEAS1:VOLT:MAX?
MEAS1:VOLT:MIN?
Switch in the input filter for channel 1 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.
INP1:FILT:LPAS:STAT ON
MEAS1:FREQ?
MEAS1:VOLT:MAX?
MEAS1:VOLT:MIN?
2461Type C User Manual
Ω impedance for Input
returns unit to default state
selects 50Ω impedance for Input 1
IN
INPUT 1
1
GATE
VT1
VT2
ARM
IN
IN 3
STD
OUT
T2
IN
2
OSC
UCT
Notes
Confirm 50kHz
V
P1
V
N1
turn on LPF for channel 1
Confirm 50kHz
V
P2
V
N2
Racal Instruments  1998