2.4 Installation/Operation
2.4.1 Installing and Operating the 2097-07
1.) Check that S1 is set tot he desired positions. Normal operation is AGC (Figure 2.2)
2.) If using the wall power supply, connect it to the 2097 and the wall power supply to
120 VAC, 60 Hz.
3.) Connect a 0 to -80 dBm signal to 70 MHz IF In, J1 (Figure 2.1, Figure 2.3).
4.) Connect the IF Out, J2 to the external device.
5.) Make sure the DS2 (green, DC Power) is on (Figure 2.2).
6.) To check proper operation and adequate signal level, monitor TP3, TP4 with a voltmeter.
2.4.2
AGC Voltage Relating to Gain - The 2097-07 operates over a 0 to -80 input. In Automatic Gain
(AGC) with S1 to AGC, the gain is adjusted automatically to provide a constant -35 ±10 dBm output
level over the entire 0 to -80 dBm input. In Manual Gain Control (MGC) with S1 to MGC, the gain is
adjusted by potentiometer R40 on the front panel. Test points TP3 and TP4 can be monitored to
determine the approximate gain and the approximated input level in AGC as the following table shows.
This voltage is not available in MGC.
0.59
0.02
-0.55
-1.01
-1.37
-1.65
-1.9
-35
-25
-15
-5
5
15
25
0
-10
-20
-30
-40
-50
-60
-70
35
2.17
-80
>40
<-3
AGC
d Input Level (dBm)
AGC Gain
AGC Monitor DC Volts
Table 2.1 2097 AGC Voltage and Gain and Input Level Information
D
C
B
A
2097-07 Manual, Rev. B
Page 6
04/26/10
