ACCEPTANCE TESTING
5-1-7
Table 5-1-3 Attenuator frequency settings
Frequency (MHz)
2030/1/2 *2031/2 **2032
2.5 1725 (1662) 2775 (2712)
31 2700 (2637) 4125 (4062)
325 5400 (5337)
1125
1275
*At frequencies above 1300 MHz the down converter will automatically be enabled.
**At frequencies above 2700 MHz it is only necessary to test down to -96.1 dBm
(determined by 8902 accuracy).
The frequency of the local oscillator will have to be entered on the receiver followed by
the test frequency. This will automatically set the receiver to the required IF frequency.
Alternative attenuator functional check
(1) Connect the test equipment as shown in Fig. 5-1-1.
(2) Set the UUT to [Carrier Freq.] 1.35 GHz [RF Level] 13 dBm.
(3) Set a reference on the power meter.
(4) Using the latch poke facility on the UUT, select each attenuator pad individually
as follows:
[UTIL] [Utils. Menu 2] [Latch Data] 95 [enter]
[Decimal/Binary]
The binary latch data will now appear in the bottom right-hand side of the display.
(5) By using the [Toggle Bit] and the [Cursor Left] [Cursor Right] soft keys, select
each attenuator pad in turn which should give the nominal readings on the power
meter in the following sequence:
-24 dB -36 dB -6 dB -12 dB -24 dB -36 dB
Note that no software correction is applied to the attenuator when performing this test.
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