HP 8340B Manual page 52

4-10. POWER SWEEP TEST (Cont'd)
Equipment
Power
Power Sensor
Adapters
APC 3.5 (f) to APC 3.5 (f)
(1 required if DUT
Type N
(1 required if DUT is HP 8341 B)
Procedure
1. Connect equipment as shown in Figure 4-10. Connect the HP
Meter. Allow a one hour warm up time. Set the Power Meter's calibration switch to include 1 GHz,
then zero and calibrate the Power Meter before connecting the Power Sensor to the DUT.
2. Press the DUT's [INSTRPRESET]. Press the [CW] key and enter [1] [GHz].
3. Press [SHIFT] [PWR SWP] to allow the ALC and RF step attenuator to be independently con-
trolled.
The step up and step down keys control the RF attenuator. The numeric
key pad and rotary knob control the ALC power level.
[—]
[ 2] [0] [dBm]ALC
4. Enter
[PWRSWP] and enter [2] [1] [dBm]to set the power sweep range to >20 dB (The maximum
power sweep range is from —20 dBm to maximum power).
5. Press the [MANUAL] key. Turn the rotary knob counterclockwise to find the beginning of the
power sweep (i.e., the power meter indication is at maximum and no longer changing). Record the
power meter indication.
The POWER dBm display will indicate the approximate output power
during a very slow or manual sweep.
6. Rotate the rotary knob clockwise to find the end of the power sweep (i.e., the power meter
indication is at maximum and no longer changing). Record the power meter indication.
7. The difference between the power meter indications recorded in step S and step 6 must be =20
dB.
8. Press the [CW] key and enter
this frequency. Repeat steps S through 7 at CW frequencies of 10, iS, and, if the DUT is an
HP 8340B, 26 GHz.
4-54 Performance Tests
Meter
is
HP 8340B)
to APC 3.5 (f)
(in)
Power level to set the start of the power sweep
[51
[GHz].Set the power meter's calibration factor switch to include
8485A
NOTE
NOTE
HP 436A Option 022
HP 8485A
HP P/N S061-5311
HP P/N 1250-1 744
Power Sensor to the Power
at —20 dBm. Press
HP 8340B/41B