User's Manual

68P80801E35-B 5/1/2002 27
EBTS System Manual - Vol 2 Troubleshooting
Generation 2 Single Channel BR Station Verification Procedures
5. As shown below respectively for 800 MHz Generation 2 Base Radios, the
following command returns the kit numbers of the receiver and all other
modules. At the BRC> prompt, type:
Receiver Sensitivity Measurement: Generation 2 Base Radio
1. Verify that the R2660 is set to 810MHz and adjust the output power to a level
of -50dBm.
2. Calibrate HP438A Power Meter. Refer to the HP users guide that came with
the Meter. Below is a general procedure that can be followed.
2.1 Attach 8481D Power Sensor to the Sensor input on the front of the
437B.
2.2 Attach the included HP 11708A 30dB pad to the Power input on
the front on the 473B.
2.3 Power on the 437B.
2.4 Connect the Power Meter to the female end of the 30dB pad
extruding from the Power input.
2.5 Press the “Zero” button on the 437B.
2.6 Wait for Zeroing operation to complete.
2.7 Press “Shift-Zero” to enter the Cal value. This is listed as CF on
the Power Sensor.
2.8 Wait for Cal operation to complete.
2.9 Press “Shift-Freq” to enter the Cal Factor. This is listed as Cf in a
chart vs. freq on the Power Sensor. Choose the closest frequency
range for the application. For 800MHz measurements, interpolate
between 1.0GHz and 0.5GHz to obtain a Cf of 99.0
2.10 For measurement of iDEN or Tornado 6:1 waveforms, press
“Offset” and enter 7.78dB.
3. Disconnect Cable A (see Figure 7 on page -60) from the Base Radio and
connect it to the Power Sensor Head.
4. Increase the power level on the R2660 until the HP 437B Power Meter reads
-50dB.
5. Record the DISPLAYED power level of the R2660 as Calfactor A.
field> fc –oplatform