GENERAL INFORMATION
1-16
Options and accessories
Options
Option 1
Option 3
Option 4
Option 5
Option 8
600 Ω Matching Unit
High Stability OCXO
Parallel Interface
GPIB Interface
SSB Demodulator
Option 23
Option 24
Option 27
Option 30
Option 32
CCITT Filter
CMESS Filter
Look and Listen addition to Spectrum Analyzer
Bail arm and front panel stowage cover
Internal Battery
600 Ω Matching Unit (Option 1)
Features
Switchable 600 Ω balanced AF input and output
Switchable 20 dB attenuator on AF generator output †
Input circuit
Impedance:
600 Ω
Return loss: >21 dB at 1 kHz
Frequency response: ±0.5 dB at 200 Hz to 5 kHz,
±2 dB at 100 Hz to 20 kHz
Accuracy of 1:1 input:output ratio: ±1% at 1 kHz ± accuracy of 2944B
Maximum input: 5 V RMS maximum at 200 Hz to 5 kHz,
3 V RMS maximum at 100 Hz to 20 kHz
Output circuit
Impedance:
600 Ω
Return loss:
>21 dB at 1 kHz
Frequency response:
±0.5 dB at 200 Hz to 5 kHz,
±2 dB at 100 Hz to 20 kHz
Level accuracy: ±2% at 1 kHz ± accuracy of 2944B
Output level:
1 mV to 2.5 V RMS across 600 Ω.
† The 20 dB attenuator facility reduces the AF output resolution to 0.01 mV up to 40 mV output level.
The accuracy of the output level degrades by ± 2 %
High Stability Internal Frequency (OCXO)
Standard (Option 3)
Frequency 10 MHz
Temperature Stability Better than 5 part in 10
8
, 5 to 55°C (41 to 131°F)
Ageing Rate Better than 1 part in 10
7
per year, after 1 month continuous
use.
Warm-up Time Less than 10 minutes to within 2 parts in 10
7
at 20°C (68°F).
Parallel Interface (Option 4) Allows direct connection of a parallel printer. Additionally
provides 4 software programmable output lines.
Printer port
Connector 25 way female D-type.
Printers supported 75,100,150 dots per inch laser printers
FX80, FX100 Epson format.
Accessory port
Connector 9 way female D-type.
Outputs 4 independently programmable output lines, each one
configurable as a logic line or as a relay contact closure.
+5 V supply available.
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