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General characteristics
Front panel connectors
HP 8753ES test ports (without Option 011)
Connector type
7 mm, precision
Impedance 50 ohms (nominal)
HP 8753ES Option 011 test ports
Connector type
Type-N female
Impedance 50 ohms (nominal)
HP 8753ES Option 075 test ports
Connector type
Type-N female
Impedance 75 ohms (nominal)
HP 8753ET test ports
Connector type
Type-N female
Impedance 50 ohms (nominal)
Probe power +15V ±2% 400 mA
(combined load for both
probe connections)
-12.6V ±5.5% 300 mA
(combined load for both
probe connections)
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, (typical)
Impedance 50 ohms
Connector BNC (f)
High-stability frequency reference output
(Option 1D5)
Frequency
10.0000 MHz
Frequency stability ±0.05 ppm
(0 ˚C to 55 ˚C)
Daily aging rate
(after 30 days)
<3x10
-9
/day
Yearly aging rate 0.5 ppm/year
Output 0 dBm minimum
Nominal output
50 Ω Connector BNC (f)
impedance
External auxiliary input (AUX INPUT)
Input voltage limits -10V to +10V
External AM input (EXT AM)
±1 volt into a 5 k
Ω
resistor,
1 kHz maximum, resulting in
approximately 8 dB/volt
amplitude modulation.
BNC (f) connector.
External trigger (EXT TRIGGER)
Triggers on a negative TTL
transition or contact closure
to ground. BNC (f) connector.
Test sequence output (TEST SEQ)
By default, this connector outputs a TTL end-of-sweep
signal. It can also be programmed by the user in a test
sequence to output a user-defined TTL signal. BNC (f)
connector.
Limit test output (LIMIT TEST)
This connector outputs a TTL signal of the limit test
results. Pass: TTL high. Fail: TTL low. BNC (f) connec-
tor.
Test-port bias input (BIAS CONNECT)
(HP 8753ES only)
Maximum voltage +30 VDC
Maximum current
(no degradation in RF specs)
±200 mA
Maximum current ±1 A
Connector BNC (f)
VGA video output (EXT MON)
This connector drives external VGA monitors.
GP-IB
This connector allows communications with compati-
ble devices including external controllers, printers,
plotters, disk drives, and power meters.
Parallel port
This 25-pin female connector is used with parallel
peripherals. It can also be used as a general purpose
I/O port.
RS-232C
This 9-pin male connector is used with serial
peripherals.
DIN keyboard
This mini-DIN connector is used for adding an
IBM PC-AT compatible keyboard.
Test set interconnect
This connector is used to connect an HP 8753ES
Option 011 to the HP 85046A/B or 85047A test set.
HP 8753ES analyzers without Option 011 can use sig-
nal levels on this connector for sequencing or general
purpose I/O applications.
Internal memory
Typical data retention time with 3V, 1.2 Ah battery:
At 25 ˚C 11904 days (32.6 years)
At 40 ˚C 1244 days (3.4 years)
At 70 ˚C 250 days (0.68 year)
Line power
48 Hz to 66 Hz
115V nominal (90V to 132V) or 230V nominal
(198V to 264V).
280 VA max.
1. F
max
is the upper frequency limit of the associated test set.
2. Degrees, specified as deviation from linear phase.