Technical data

2-18 Service Guide 85309-90082

Operating Information LO/IF Distribution Unit

Performing the Operator’s Check 85309B

Reference IF and Test IF

After completing the LO Power Output test, use the same cable set and perform the following steps to

perform a 2-port calibration and check the Reference IF channels.

1. On the PNA, select Preset.

2. Disconnect the 30 dB pad attenuator, if present.

3. Make the following selections on the PNA:

a. Measurement = S

b. Power = –35 dBm

c. IF bandwidth = 1 kHz

d. Start frequency = 10 MHz

e. Stop frequency = 100 MHz

4. Connect a test cable to PNA Port 1.

5. Connect a test cable to PNA Port 2.

Table 2-4 85309B Options 40x Output Power Limits for HIGH Band

LO Output Power (+6 dBm Input)

Frequency Range Power Level

0.3 – 0.5 GHz > +21.3 dBm

0.5 – 3 GHz > +22.4 dBm

3 – 6.2 GHz > +24.4 dBm

6.2 – 18 GHz > +22 dBm

LO Output Power (0 dBm Input)