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SECTION IV
Model 4277A
Note
1) Use the BNC (fHf) adapters furnished with the HP 16380A standard
capacitor set.
2) If the 16048A Test Leads are not available, use the Im Test Leads (HP P/N
16074-61600) furnished with the HP 16074A standard resistor set.
PROCEDURE:
1. Set the 4277A's controls as follows:
DISPLAY A function . C
DISPLAY B function . D
CIRCUIT MODE . AUTO
LC I Z !
RANGE . AUTO
MEAS SPEED . MED
TRIGGER . INT
DC BIAS switch . OFF
CABLE LENGTH switch . 0
Other controls . Any setting
Note
If Open/Short Test (paragraph 4-15) has not been performed before doing
this test, perform zero offset adjustment as described in steps I, 3, 6 and 7
of paragraph 4-15.
2. Connect a IpF standard capacitor directly to the UNKNOWN terminals as
shown in Figure 4-3 (b).
3. Set the test frequency and TEST SIG LEVEL in accordance with Table 4-7 (a).
Capacitance and dissipation factor readings should be within the test limits
given in the table.
4. Change the standard capacitor to lOpF, lOOpF and lOOOpF in that order and
verify that the capacitance readings are within the test limits given in Table
4-7 (a).
5. Set the CABLE LENGTH switch to Im.
6. Disconnect the standard capacitor and connect the 16048A Test Leads to the
UNKNOWN terminals. Connect Open termination as shown in Figure 4-5 (a).
Use the BNC (f)-(f) adapters to permit connection of the termination.
Press
ZERO OPEN button to perform "open" offset adjustment.
7. Disconnect Open termination and connect Short termination as shown in Figure
4-5 (b). Press the ZERO SHORT button to perform "short" offset adjustment.
8. Disconnect Short termination and connect a IpF standard capacitor as shown in
Figure 4-5 (c).
9. Set the test frequency to IMHz and set the TEST SIG LEVEL in accordance
with Table 4-7 (b). Capacitance and dissipation factor readings should be within
the test limits given in the table.
4-14
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