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Attenuator accuracy
Test procedure
|
| Signal generator |
UUT |
| RF OUTPUT |
RF |
|
|
OUT | RF | LO |
|
| Down converter |
| Frequency offset | Sensor |
| mode connection |
|
|
| Measuring |
|
| receiver |
|
| C2559 |
Fig. 5-2 RF output test set-up
(1)Connect the test equipment as shown in Fig.
(2)On the UUT set:
Carr freq | 2.6 MHz |
RF Level | −4 dBm |
Set ∆ | 11 ENTER |
(3)Tune the receiver to 2.6 MHz and record the output level measured in Table
(4)Set the UUT RF level to −4.1 dBm. Measure the received level and record the result in Table
(5)Decrement the UUT, using the icon, in 11 dB steps down to an RF level of −103.1 dBm measuring the received level at each step shown in Table
(6)Set the UUT to carrier frequency 480.1 MHz and repeat (2) to (5) using Table
(7)Set the UUT to carrier frequency 1199 MHz and repeat (2) to (5) using Table
The down converter will automatically be enabled when testing frequencies above 1300 MHz.
(8)Set the local oscillator to +8 dBm at a carrier frequency of 62 MHz less than the test frequency (i.e. 1813.1 MHz).
(9)On the receiver, enter the local oscillator frequency followed by the test frequency.
(10)Set the UUT to carrier frequency 1875.1 MHz and repeat (2) to (5) using Table
(11)Set the UUT to carrier frequency 2399 MHz and repeat (2) to (5) using Table