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HP 85027A/B/C Installation
CAUTION
Electrostatic discharge (ESD) can damage the highly sensitive
microcircuits in the HP 85027 bridges. ESD damage is most
likely to occur as the bridges are connected or disconnected.
Protect the bridges by wearing a grounding strap that provides a
path to ground of no less than 1 Megohm and no more than 2.5
Megohms. Alternatively, ground yourself by touching the outer
shell of any grounded instrument chassis before touching the
bridge connectors.
Never touch the center contacts of the connectors.
Use a work station equipped with an anti-static surface.
Electrical performance checks are in Section 4 of this manual. If the bridge does not
pass the electrical performance tests, refer to the Troubleshooting Procedures in Section
8. If the bridge does not pass the electrical tests, or if it is damaged or defective, or if
the contents are incomplete, keep the shipping materials and notify both the carrier and
the nearest Hewlett-Packard office. The HP office will arrange for repair or
replacement of the bridge without waiting for settlement of the claim.
PREPARATION FOR USE
Power Requirements
Power for the HP 85027 is supplied by the network analyzer.
Connecting the HP 85027
Insert the connector of the bridge's power cable (Wl) into the A, B, (C if HP 87 57A,
Option 001) or R mating connector of the analyzer and turn the outer sleeve clockwise
to tighten it.
Connect the HP 85027's input port to the RF output port of the source.
Connect the device under test to the bridge's test port. Section 3 shows typical
measurement configurations. Refer to Section 8 for information on the care and use of
APC-7 and precision 3.5mm connectors.
Mating Connectors
APC-7 connectors mate with APC-7 connectors. Precision Type-N connectors mate
with the corresponding precision Type-N connectors whose dimensions conform to US
specification MIL-C-39012. 3.5mm connectors mate to the corresponding 3.5mm
connectors.
To extend the life of the 3.5mm female connectors, use the precision 3.5mm (m) to
3.5mm (m) adapter or the 3.5mm (m) to 3.5mm (f) adapter. They are included with the
HP 85027B as noted in Table 2-1 and illustrated in Figure 3-1.
Operating Environment
The instrument may be operated in temperatures from 0°C to +55°C but should be
protected from environmental conditions which cause internal condensation. It may be
operated at altitudes up to 4 572 metres (15 000 feet).
2-2
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