How much load resistance does this IS200VAICH1C support?

When it drives a 20 mA output, the 1000 foot end of the IS200VAICH1C #18 wire supports load resistors up to 500.
What are the various LED indicators on this IS200VAICH1C?

The IS200VAICH1C has three LED indicators located on the top of the IS200VAICH1C. These leds on IS200VAICH1C are indicated by RUN, FAIL, and STAT on IS200VAICH1C.
What are the firmware options for IS200VAICH1C?

The firmware of the IS200VAICH1C includes a gas turbine compressor stall detection, which is performed at a frequency of 200 Hz on the IS200VAICH1C.
Which specific Mark VI series manual does the IS200VAICH1C use?

You can use the manual GEH-6421 with IS200VAICH1C. This manual is a Mark VI guide to turbine control systems. While this manual is not specific to IS200VAICH1C, the manual specifically deals with VAIC boards and IS200VAICH1C from page 35 of the manual.
About IS200VAICH1C
The IS200VAICH1C board assembly is part of GE’s Mark VI turbine control system. Specifically, the Mark VI turbine control System family is one of the most complex and advanced Speedtronic systems ever created by GE. This IS200VAICH1C device is considered a versatile model of the Mark VI turbine control system family as it can be used to create TMR (Triple modular redundancy) and simplex control systems for industrial turbine systems (gas or steam). However, most Mark VI components are now in their old state and are no longer supported by Oems. We at AX Control do our best to keep these products in our on-hand, ready-to-ship inventory so that we can fill orders faster when you need them most. As we all know, this larger Mark VI turbine control system family for the IS200VAICH1C device must be considered a functional upgrade over the industry-standard Mark V turbine control system family previously with similar full extension series titles. Because the Mark V Series only has a specific set of possible functional applications in the control and management systems of GE compatible gas turbine and steam turbine components.
GE FANUC IS200VAICH1C - Turbine Control Module for Mark VI IS200 Systems

Hardware tips and specifications

The IS200VAICH1C is used with a terminal board that can hold 10 inputs and 2 outputs. The board and its corresponding terminal board operate within the Mark VI VME processor rack and communicate with other boards within that location. Each plate is individually identifiable. The IS200VAICH1C board consists of a single wide front panel that includes three status leds and two clamps that remain in place once the device is installed into the rack system. The back edge of the board has two horizontal connectors. The circuit board itself consists of capacitors, resistors, processor chips, and other ics, transistors, and diodes. Most components are marked with the original manufacturer’s logo and their reference names. The code on the surface of the board will help with the positioning and wiring of the board. This IS200VAICH1C product is edited from the base product of its original Mark VI series of functional roles by installing an atypical Level C revision.

Installation and handling procedures are available through GE’s original manual or user guide. Please follow all safety procedures recommended in these publications. Read and understand the installation procedure before unpacking new components. This particular IS200VAICH1C printed circuit board product product does not usually appear in large quantities of original printed instruction manual material online, which is most likely due to its status as one of the more copyrighted GE logo product families since its introduction. Previously it followed a similar full extension series name to the Mark V turbine control system family. Largely due to the lack of documentation, the IS200VAICH1C functional product number itself can actually be isolated as a good supplemental source of IS200VAICH1C Board hardware component and component specification information. Because it encodes various related IS200VAICH1C Board details through a series of continuous functional naming segments. For example, the IS200VAICH1C product number begins with an iteration of the dual-function IS200 series label, which specifies the normal Mark VI series components of the IS200VAICH1C PCB above its more standard domestic original manufacturing location. Some other relevant IS200VAICH1C Board qualities demonstrated through this medium include:

VAIC Functional Products Acronym
The first group of Mark VI series groups
Conformal PCB coating style
The only C-level revision