Operating instructions

ACCEPTANCE TESTING
5-24
RF frequency meter
Specification
Frequency range:
400 kHz to 1.05 GHz
Resolution:
0.1 Hz, 1 Hz or 10 Hz selectable
Accuracy
As frequency standard ± resolution
Sensitivity autotuned
5 mW (N-type), 0.05 mW (antenna port)
Sensitivity manual tuned
−34 dBm (N-type), −60 dBm (antenna port)
Test equipment
Description Minimum specification Example
RF signal generator 400 kHz to 1.05 GHz IFR 2965 or
IFR 2041
RF power meter
±0.1 dB from 10 MHz to 1 GHz
IFR 6960/A/B +
6920 sensor
C5899
ANTENNA
INPUT
UUT
Signal generator
RF OUTPUT
Fig. 5-15 RF frequency meter
(1) Refer to Results table 5-29 on page 5-41. Connect the equipment as shown in Fig. 5-15,
connect
ing the incoming signal to the antenna input socket of the UUT. Lock the 2948
external standard input to the external standard output of the signal generator.
(2) Set the UUT to [Tx TEST], RF IN/OUT [SELECT] antenna BNC input socket. Press
[HELP/SETUP], [Setup], and toggle RF counter resolution until 1 Hz is displayed in reverse
field, then press [Return], [Return] to get back to the TX test display.
(3) On the UUT, press [Tx Freq] 10 MHz. Set the RF signal generator to provide a signal of
10 MHz at an RF level of −60 dBm. Check this level by removing the RF test signal
connection from the UUT and applying it to the RF power meter. Adjust the level if
necessary, then reconnect the UUT.
(4) Check that the offset indicated on the UUT is 0 Hz ±1 Hz.
(5) Repeat steps 3 & 4 for frequencies of 500 MHz and 1.05 GHz.
(6) Refer to Results table 5-30 on page 5-41. Press the [
A
uto Tune] key on the UUT.
(7) Set the RF signal generator to provide a signal of 1000 MHz at a level of −13 dBm (check
and set this level on the power meter). Check that the UUT autotunes to the incoming
frequency and the Frequency counter indicates the frequency ± 1 Hz. Repeat at 500 MHz
and 10 MHz.