22-52. Measurements. To obtain correct monitor mode data it is necessary to first set the frequency,
bandwidth, and image prior to making the reading. Thus, it is a good practice to always place the request for a
reading as the last command in the string. For example the command string:
CMRNRHGF95.5RET
selects the monitor mode, narrowband, high image, and 95,5 MHz center frequency. The'RET'command asks
for a frequency error reading and triggers the analyzer so that the reading will be made.
22-53. General. Overall, programming the analyzer involves the same steps as are involved when using it.
manually. A program can be fairly easily obtained by first performing the desired test sequence manually
noting each time a setting is changed and a reading made. The program is then simply a duplication of the
' manual steps with control commands substituted.
22-54. R2002A Analyzer Configuration
The R2002A analyzer differs in configuration from the standard R2001A in the following manner:
A11 Module: The manual attenuator AT1 is replaced with a programmable version (P/N RTL-4064A). A
new ribbon cable assembly connected to the A8 module provides control signals for the attenuator. The
module is reidentified for ordering purposes as RTC-1003A.
A9 Module: Additional memory for the IEEE program is added by adding U36 (E-PROM TMS 25L32).
Front Panel Assembly A14: Rotary switch S19 is added for control of the RF I nput/Output level. The switch
P/N is40-P04127T001.
Module AS is added to the analyzer (see Section 14 for details). Ribbon cable assembly 30-P04147T001 is
added from the A8 module to the rear panel of the analyzer to provide I/O signals.
The R2002A also contains blower assembly A15 for additional cooling (see Section 21).
22-12
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