Ratio 1:2 Test; Figure 6-5, Ratio 1 : 2 Test Configuration - Racal Instruments 2461 User Manual

2461Type C User Manual

Ratio 1:2 Test

Racal Instruments  1998
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Set the UCT to its default state. Select Ratio 1:2 as the
measurement mode, 50
for input 2, external frequency standard, and set the
measurement resolution to three digits.
Equipment: Signal Generator
Configure UCT as follows:
*RST
INP1:IMP 50
INP2:COUP DC
Connect the signal generator's RF and LF outputs to the UCT's
Inputs 1 and 2 as shown in Figure 6-5. Set the signal generator
to 50MHz, 100mV rms. Check that the UCT measurement
result is 50000 +/- 10.
SIGNAL GENERATOR
RF OUT

Figure 6-5, Ratio 1 : 2 Test Configuration

Command Syntax:
MEAS1:FREQ:RAT? measures the ratio of frequencies at
Disconnect the test equipment.
Performance Verification and Adjustments 6-11
Ω for input 1 impedance, DC coupling
returns UCT to default state
selects 50Ω impedance for Input 1
selects DC coupling for Input 2
VT1
VT2
IN
STD
OUT
1KHz AF OUT
T2
UCT
Inputs 1 & 2
IN
INPUT 1
1
GATE
ARM
IN 3
IN
INPUT 2
2
OSC