Analyzer; Hp Model 8755 Frequency Response Test Set; Hp Model 8756A Scalar Network Analyzer; Power Meters And Crystal - HP 8340A Operating Manual

Model 8340A
panel FREQ REF INPUT. The Model 8410B
INTERFACE connector pins and signals are illus­
trated in Section II, Installation, in this volume.
Additional information on interfacing the 8340A
with the 8410 is included in Section III, Operation,
in this volume.
1-54. HP Model 8755 Frequency
Response Test Set
1-55. The 8340A is directly compatible with the
8755Frequency Response Test Set for broadband
swept scalar measurements. The 8755 provides a
front panel 27.8 kHz square wave AM modulation
output. this output can be routed directly into the
8340A AM Modulation Input connector. When
[SHIFT] [PULSE] is pressed on the 8340A, the RF
OUTPUT will then be modulated at 27.8 kHz,
thereby providing the correct modulation fre­
quency for the 8755 ac detection scheme. This
eliminates the need for an external modulator.
1-56. The 8340A can also sequence alternate
sweeps in the 8755C through the use of the ALT
function. This works in conjunction with the
channel switching circuits in the 8755C. This per­
mits Channel 1 on the 8755C to respond only to
the 8340A current state and Channel 2 to the alter­
nate state. A single cable (HP Part Number
8120-317 4) connects between the 8340A rear panel
8755C INTERFACE connector and the 8755C
front panel ALT SWP INTERFACE connector to
provide the necessary signals for channel sequenc­
ing. The 8340A rear panel 8755C INTERFACE
connector pins and signals are illustrated in Sec­
tion II, Installation, in this volume. Additional
information on interfacing the 8340A with the
8755 is included in Section III, Operation, in this
volume.
1-57.
HP Model 8756A Scalar
Network Analyzer
1 - 58 . T h e M odel 8 7 5 6 A S c a l a r N e t w o r k
Analyzer is a microprocessor-based analyzer
capable of making scalar (magnitude only) refl e ct­
ion and transmission measurements at RF and
microwave frequencies. The 8756 is completely
programmable through HP-IB and can control the
8340A, the HP Model 8350B Sweep Oscillator, or
a plotter directly. In addition to the source, a
REPLACEMENT PAGE
complete 87 56A measurement system requires the
use of detectors and/or bridges to the R, A, or B
inputs on the front panel.
1-59.
1-60. The RF output can be externally leveled
using the HP Model 432, HP Model 435, or HP
Model 436 Power Meters, or with positive or nega­
tive polarity output crystal detectors. Additional
information on interfacing the 8340A with powr
meters and crystal detectors is included in Section
III, Operation, in this volume.
1-61.

RECOMMENDED TEST EQUIPMENT

1-62. Table 1-2.
equipment for the tests and adjustments supplied
in Section IV, Performance Tests, the Automated
Test Procedures, and Section V, Adjustments.
Test equipment that is used for automated tests is
footnoted in the table for easy reference; some
equipment is required only for the automated pro­
cedures. Test equipment other than that noted in
the table may be substituted if it meeds or exceeds
the critical specifi c ations indicated in the table.
1-63. Most of the procedures required to verify
HP 8340A operation are provided in the (non­
automated) test procedures in Section IV, Perfor­
mance Tests. Frequency Switching Time can only
be measured using an automated test and verifica­
tion of the 8340A RF attenuator performance
would be impractical with a manual test. Although
a manual test for frequency response is provided,
an automated test is available for convenience.
The RF attenuator test uses data generated by the
frequency response test. The automated frequency
response test may be used in lieu of the manual
procedure.
The automated 8340A test programs are
1-64.
for use with an HP 9826A or 9836A Desktop Com­
puter. The test programs are available on two
discs. The operating instructions supplied with the
discs are also included in the Automated Test
Procedures section of this manual. The manual
and the test program discs are available by order­
ing the HP Part Number shown in the Automated
Test Procedures section of this volume.
ALL SERIALS
Scans by HB9HCA and HB9FSX
General Information
Power Meters and Crystal Detectors
is a complete list of all required
1-5