Below is a listing of the special function codes for the R2000D series analyzers.

SPECIAL FUNCTION CONTROL CODES
• The card supplied with the R-2001D and the applique inside the front-panel cover 
show the special function codes. The table below lists the special function control 
codes grouped according to the first digit of the code and then grouped by function 
type.

• A master reset code 0 (zero) causes all function types to revert to the default 
states listed below.

• To obtain a CRT display of all activated special functions, simultaneously depress 
both keypad cursor keys twice. The screen will automatically return to standard 
operation after 10 to 15 seconds.

CODE MODE ACTIVATES

0 Master Reset Clears all special functions (default state)

10 Encode/Decode Clears all 1x special functions (default state)
11 Encode/Decode Baseband
12 Encode/Decode Decode only
13 Encode/Decode Encode Only

20 Monitor Clears all 2X monitor special functions (default state)
21 Monitor Enables 300 Hz LPFL
22 Monitor Enables 3 kHz LPFL
23 Monitor Enables 20 kHz LPFL
24 Monitor Enables 5 Hz HPFL
25 Monitor Enables 300 Hz HPFL
26 Monitor Enables 3 kHz HPFL

30 Frequency Clears all frequency 3X special functions (default state)
31 Frequency Enables direct frequency readout (10 Hz resolution)
32 Frequency Enables direct frequency readout (1 Hz resolution)
33XY Frequency Enables scan lock from XOO MHz to YOO MHz
3300 Frequency Enables full-band scan lock
34XY Frequency Enables scan latch from XOO MHz to YOO MHz
3400 Frequency Enables full-band scan latch

40 Enables automatic DVM ranging (default state)
41 Enables 1.0 V DVM range
42 Enables 10 V DVM range
43 Enables 100V DVM range
44 Enables 300V DVM range

50 Modulation Meter Enables automatic modulation ranging (default state)
51 Modulation Meter Enables 10 kHz range
52 Modulation Meter Enables 100 kHz range

60 Auto counter resolution (default state)
61 Counter 0.1 Hz resolution
62 Counter 1 Hz resolution
63 Counter 10 Hz resolution
64 Counter 100 Hz resolution
65 Counter 1 kHz resolution

70 Sets factory control states (default state)
71 Sets the current state as the power-on state
72 Initiates a system self test
73 Disables the automatic switching to monitor mode if the input signal is over 0.1W
74 Mutes speaker during GEN
7700 Resets from duplex to simplex (default state)
77XY Sets the last XY in RF memory presets as duplex
78000 Disables audible alarm (default state)
78XYZ Sets deviation audible alarm to XY.Z kHz
79 Resets nonvolatile memory

89 Resets option memory

99 Shows resident version of system software