8-92. Power Supply Block Assembly
8-93. The Power Supply Block provides four regulated DC voltages and one unregulated DC voltage for dis-
tribution throughout the instrument.
8-94. Channel C Input Block Assembly (Option 030)
8-95. The Option 030 Channel C Block allows the Counter to measure frequencies up to 1.3 GHz. Channel C
divides the input frequency by a factor of
64
to bring it within the counting range of the Measurement Block.
8-96. MATE (CIIL) Block Assembly (Option 700)
8-97. The Option 700 Modular Automatic Test Equipment (MATE) Block contains a microprocessor, program
and data memory, buffer space, and decoding logic circuits, that allows the Counter to operate in MATE sys-
tems. The MATE circuit gives the Counter the internal capability to process CIIL (Control Interface Inter-
mediate Language) commands. The CIIL commands consist of ASCII characters and are communicated over
the Hewlett-Packard Interface Bus (HP-IB).
8-98. Oven Oscillator Module (Option 010)
8-99. The Option 010 Oven Oscillator is an extremely stable, compact, low-power source of 10 MHz. This op-
tion provides the HP
5334B with a high stability timebase. The crystal, along with its associated circuits are all
mounted inside a thermally insulated housing.
8-100.
A2
Front Panel Board Assembly
8-101. The
A2
Front Panel Board provides front panel push-button control of all counter functions and dis-
plays measurement results, diagnostic information, and failure codes.
8-102. DETAILED THEORY OF OPERATION
8-103.
The detailed theory of operation is provided in the following paragraphs. Each assembly theory refers to
its associated schematic diagram located at the end of this section.
8-104. INPUT AMPLIFIER BLOCK
8-105. The Input Amplifier block contains a pair of matched 100 MHz amplifier circuits, Channel A and Chan-
nel B. These circuits receive input signals through the front panel connectors or the Option 060 rear panel con-
nectors. The input signals are buffered and shaped before going directly to the Multiple-Register Counter
(MRC) in the Measurement block.
8-106.
Each input channel has four stages:
Signal Conditioning
High and Low Frequency Amplifier
Schmitt Trigger
Buffer
8-107.
The Input Amplifier block also contains a Relay Driver through which the Measurement MCU controls
the relays in the signal conditioning stages. Channels
A
and B are identical except for a 100 kHz filter in Chan-
nel
A
only, and the switching circuitry for the Separate/Common modes. The following detailed description
refers to Channel A but can be applied as well to Channel B.
HP
5334B
-
Service Manual
8-17
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