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Model 4277A
SECTION IV
5. Set the 3478A's controls as follows:
Function . DCV
RANGE . 300V
display .3 1/2 digits
6. Connect the 3478A's LO input to the 4277A's GUARD terminal.
7. Press the 16064A's ERASE key and set the following comparator limits:
L/C/IZl LOW LIMIT (BINl):
.3
L/C/IZI HIGH LIMIT (BINl):
.9
D/Q/ESR/G LOW LIMIT:
2
D/Q/ESR/G HIGH LIMIT:
8
8. Connect the lOOkQ standard resistor to the 4277A's UNKNOWN terminals.
9. Press the RUN key on the 16064A's control panel.
10. Verify that the L/C/ | Z | LOW and D/Q/ESR/G HIGH lamps light, and "0" is
displayed on the 4277A's FREQUENCY/DC BIAS DISPLAY.
i/c/m
o o
FREQUENCY / DC BIAS
kHz
O
Hz
O
V
O
11. Check the states of the comparison data output (TTL) at the HANDLER
INTERFACE connector using the 3478A. The pin assignments and the data
states are shown in Figure 4-8 and Table 4-11.
12. Disconnect the lOOkfl resistor and connect a lOOOpF standard capacitor.
13. Verify that the L/C/ [ Z | HIGH and D/Q/ESR/G LOW lamps light, and "0" is
displayed on the 4277A's FREQUENCY/DC BIAS DISPLAY.
L/C/IZI
LOW
IN
aittK
o 0
O/O/E&R/Q
LOW
IN
9
0 0
4-23
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