Atec Agilent-8720D - Manual (Page 20)

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GPIB (remote) programming
Interface
GPIB interface operates to IEEE 488-1978 and IEC
625 standards and IEEE 728-1982 recommended
practices.
Addressing
The GPIB address of the analyzer can be verified
or set from the front panel via the local menu and
can range from 0 to 30 decimal (factory set at 16).
Pass control
Allows the analyzer to request control of the GPIB
(when an active controller is present) whenever it
needs to output to a plotter or printer.
System controller
Allows the analyzer to become a controller on the
GPIB to directly control a plotter or a printer.
Talker/listener
Allows the analyzer to become a GPIB talker/ lis-
tener when an external controller is present.
Transfer formats
Binary (internal 48-bit floating point complex for-
mat), ASCII and 32- or 64-bit IEEE 754 floating
point format.
User-accessible graphics
Using a subset of HP graphics language (HP-GL),
vector or text graphics may be written on the ana-
lyzer via GPIB. Up to 5 kbytes of data can be
stored at one time (4 bytes per vector, 2 bytes per
character).
Interface function codes
SHI, AHI, T6, L4, SRI, RLI, PPO, DC1, DT1, Cl, C2, C3, CIO, E2
Upgrades
Refer to Configuration Guide.
Security
Frequency blank
Blanks all frequency information from display,
including markers; requires FACTORY PRESET to
re-enable.
Reset memory
Writes binary zeros to all non-volatile memory reg-
isters, erasing all instrument state and calibration
data; used with PRESET.
General characteristics
Front panel connectors
Connector type
Agilent 8719D/8720D: 3.5 mm precision
Agilent 8722D: 2.4 mm precision
Impedance
50 ohms (nominal)
Rear panel connectors
External reference frequency input (EXT REF INPUT)
Frequency: 1, 2, 5, and 10 MHz (±200 Hz at 10 MHz)
Level: –10 dBm to +20 dBm, characteristically
Impedance: 50 ohms
High-stability frequency reference output (Option 1D5)
Frequency: 10.0000 MHz
Frequency stability (0 °C to 55 °C): ±0.05 ppm
Daily aging rate (after 30 days): <3 x 10
–9 /day
Yearly aging rate: 0.5 ppm/year
Output: 0 dBm minimum
Nominal output impedance: 50 ohms
External auxiliary input (AUX INPUT)
Input voltage limits: –10 V to +10 V
External AM input (EXT AM)
±l volt into a 5 k
Ω
resistor, 1 kHz maximum, resulting
in approximately 8 dB/volt amplitude modulation.
External trigger (EXT TRIGGER)
Triggers on a negative TTL transition or contact
closure to ground.
Test sequence output (TEST SEQ)
This connector outputs a TTL signal which can be
programmed by the user in a test sequence to be
high or low. By default, this output provides an end-
of-sweep TTL signal. (For use with part handlers.)
Limit test output (LIMIT TEST)
This connector outputs a TTL signal of the limit
test results. Pass: TTL high; Fail: TTL low.
Test port bias input (except Option 085)
Maximum voltage: +30 Vdc
Maximum current (no degradation in RF specifications):
±200 mA
Maximum current: ±lA
External monitor: VGA video output
This connector drives external VGA monitors.
GPIB
This connector allows communication with com-
patible devices including external controllers,
printers, plotters, disk drives, and power meters.
Capabilities (continued)