C1, TM 11-5805-424-15/NAVSHIPS 0967-220-9010/TO 31W2-2G-41
determine that the output impedance does not exceed
8.1-5. Input Capacitance Tests
100 ohms maximum. Perform the following procedures:
The purpose of the input capacitance test is to
determine if optimum input voltage is obtained. Perform
a. Connect the equipment as shown in figure 8.1-3.
the following procedures:
b. Operate the AC POWER ON-OFF switch to ON.
a. Connect the equipment as shown in figure 8.1-2.
c. Measure the output voltage without a load (V1).
b. Operate the AC POWER ON-OFF switch to ON.
d. Measure the output voltage with the 1,360 ohm
load (V2).
optimum wave is displayed on the scope.
The
e. Calculate the output impedance as follows:
capacitance value should not exceed 1,500 pica-farads
on the decade capacitance box.
Z OUT = V1 - V2
V2
8.1-6. Output Impedance Tests
The purpose of the output impedance tests is to
ohms maximum.
LEGEND:
1. OSCILLOSCOPE AN/USM-1406
2. PULSE GENERATOR AN/UPM-15A
3. CAPACITOR, DECADE AN/URM-2
4. MODEM, LOW SPEED WIRE LINE MD-674 (P)/G
TM5805-424-15-C1-2
Figure 8.1-2. Connections for input capacitance tests.
8.1-3
