HP 1660 Series User Manual

Acquire the data
11 Obtain the 1 MHz response.
aa Set the signal generator for 1 MHz at − 2.4 dBm.
bb Press the blue shift key, then press the Run key. The signal on the screen should be
two cycles at three divisions amplitude. After approximately 15 seconds (averaging
complete), press the Stop key.
cc Press the Meas key. Note the voltage reading in the V
p-p
field.
V
1 MHz
= __________ mV.
22
Set the signal generator for 250 MHz frequency.
aa Set the power meter Cal Factor % to the 1 MHz value from the calibration chart on the
power splitter. Press dB[REF] to set a 0 dB reference.
bb Change the signal generator frequency to 250 MHz. Set the power meter Cal Factor %
to the 250 MHz value from the chart.
cc Adjust the signal generator amplitude for a power readi ng as close as possible to 0.0
dB[REL] and note the power reading. Reading = __________ dB.
33
Obtain the 250 MHz response.
aa Use the RPG knob to dial in a s/Div value of 2 ns/Div.
bb Press the blue shift key, then press the Run key. After approximately 15 seconds
(averaging complete), press the Stop key.
cc Note the voltage reading in the V
p-p
field V
250MHz
= ________mV.
44
Determine the oscilloscope response.
aa Calculate the response using the formula:
r esponse (
dB) = 20 log
10
V
250Mhz
V
1MHz
= 20log
10
(_____) = ______dB
bb Correct the result from step 4a above with any differences in the power meter from
step 2c. Observe signs. For example:
Result from step 8 = − 2.3 dB
Power meter reading = − 0.2 dB[REL]
then true response = (− 2.3) − (− 0.2) = −2.1dB
(__________) − (__________) = ____________ dB
cc The result from step 4b should be ≤ − 3.0 dB. Record the result in the performance
test record.
55
Remove the power splitter from the oscilloscope channel 1 input and connect it to
the channel 2 input.
66 Repeat from "Set up the logic analyzer" for channel 2, replacing channel 1 with
channel 2 where applicable.
See Also Failure of the bandwidth test can be caused by a faulty attenuator or main assembly (see
chapter 6) .
To test the bandwidth (oscilloscope)
3–85

HP 1660 Series Specifications

General

Category	Logic Analyzer
Glitch Trigger	Yes
Pattern Trigger	Yes
State Analysis	Yes
Transitional Timing	Yes
Trigger Modes	Edge, Pattern, Glitch